[MSan] Remove explicit -m64 from RUN lines.

Target-specific flags should usually be configured by CMake/lit.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@230999 91177308-0d34-0410-b5e6-96231b3b80d8

79 files changed, 228 insertions, 228 deletions

diff --git a/test/msan/Linux/getresid.cc b/test/msan/Linux/getresid.cc
index 385351dfd..f3c0914b5 100644
--- a/test/msan/Linux/getresid.cc
+++ b/test/msan/Linux/getresid.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p 2>&1
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t %p 2>&1
 
 #include <assert.h>
 #include <unistd.h>
diff --git a/test/msan/Linux/glob.cc b/test/msan/Linux/glob.cc
index 8604e4d76..1481861a0 100644
--- a/test/msan/Linux/glob.cc
+++ b/test/msan/Linux/glob.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p 2>&1 | FileCheck %s
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1 | FileCheck %s
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t %p 2>&1 | FileCheck %s
 
 #include <assert.h>
 #include <glob.h>
diff --git a/test/msan/Linux/glob_altdirfunc.cc b/test/msan/Linux/glob_altdirfunc.cc
index 2c02e735e..cb7fe09cb 100644
--- a/test/msan/Linux/glob_altdirfunc.cc
+++ b/test/msan/Linux/glob_altdirfunc.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p 2>&1 | FileCheck %s
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1 | FileCheck %s
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t %p 2>&1 | FileCheck %s
 
 #include <assert.h>
 #include <glob.h>
diff --git a/test/msan/Linux/glob_nomatch.cc b/test/msan/Linux/glob_nomatch.cc
index bc35c30d6..fa132c813 100644
--- a/test/msan/Linux/glob_nomatch.cc
+++ b/test/msan/Linux/glob_nomatch.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t %p
 
 #include <assert.h>
 #include <glob.h>
diff --git a/test/msan/Linux/sunrpc.cc b/test/msan/Linux/sunrpc.cc
index 78645a7dc..c92ad632c 100644
--- a/test/msan/Linux/sunrpc.cc
+++ b/test/msan/Linux/sunrpc.cc
@@ -1,14 +1,14 @@
-// RUN: %clangxx_msan -m64 -g -O0 -DTYPE=int -DFN=xdr_int %s -o %t && \
+// RUN: %clangxx_msan -g -O0 -DTYPE=int -DFN=xdr_int %s -o %t && \
 // RUN:     %run %t 2>&1
-// RUN: %clangxx_msan -m64 -g -O0 -DTYPE=int -DFN=xdr_int -DUNINIT=1 %s -o %t && \
+// RUN: %clangxx_msan -g -O0 -DTYPE=int -DFN=xdr_int -DUNINIT=1 %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
-// RUN: %clangxx_msan -m64 -g -O0 -DTYPE=double -DFN=xdr_double %s -o %t && \
+// RUN: %clangxx_msan -g -O0 -DTYPE=double -DFN=xdr_double %s -o %t && \
 // RUN:     %run %t 2>&1
-// RUN: %clangxx_msan -m64 -g -O0 -DTYPE=double -DFN=xdr_double -DUNINIT=1 %s -o %t && \
+// RUN: %clangxx_msan -g -O0 -DTYPE=double -DFN=xdr_double -DUNINIT=1 %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
-// RUN: %clangxx_msan -m64 -g -O0 -DTYPE=u_quad_t -DFN=xdr_u_longlong_t %s -o %t && \
+// RUN: %clangxx_msan -g -O0 -DTYPE=u_quad_t -DFN=xdr_u_longlong_t %s -o %t && \
 // RUN:     %run %t 2>&1
-// RUN: %clangxx_msan -m64 -g -O0 -DTYPE=u_quad_t -DFN=xdr_u_longlong_t -DUNINIT=1 %s -o %t && \
+// RUN: %clangxx_msan -g -O0 -DTYPE=u_quad_t -DFN=xdr_u_longlong_t -DUNINIT=1 %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
 
 #include <assert.h>
diff --git a/test/msan/Linux/sunrpc_bytes.cc b/test/msan/Linux/sunrpc_bytes.cc
index f0c35746f..477637af2 100644
--- a/test/msan/Linux/sunrpc_bytes.cc
+++ b/test/msan/Linux/sunrpc_bytes.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -g -O0 %s -o %t && \
+// RUN: %clangxx_msan -g -O0 %s -o %t && \
 // RUN:     %run %t 2>&1
-// RUN: %clangxx_msan -m64 -g -O0 -DUNINIT=1 %s -o %t && \
+// RUN: %clangxx_msan -g -O0 -DUNINIT=1 %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
 
 #include <assert.h>
diff --git a/test/msan/Linux/sunrpc_string.cc b/test/msan/Linux/sunrpc_string.cc
index 3f44a96d1..350222f5c 100644
--- a/test/msan/Linux/sunrpc_string.cc
+++ b/test/msan/Linux/sunrpc_string.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -g -O0 %s -o %t && \
+// RUN: %clangxx_msan -g -O0 %s -o %t && \
 // RUN:     %run %t 2>&1
-// RUN: %clangxx_msan -m64 -g -O0 -DUNINIT=1 %s -o %t && \
+// RUN: %clangxx_msan -g -O0 -DUNINIT=1 %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
 
 #include <assert.h>
diff --git a/test/msan/Linux/syscalls.cc b/test/msan/Linux/syscalls.cc
index 4dd97e745..78dba3663 100644
--- a/test/msan/Linux/syscalls.cc
+++ b/test/msan/Linux/syscalls.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t 2>&1
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t 2>&1
 
 #include <assert.h>
 #include <errno.h>
diff --git a/test/msan/Linux/tcgetattr.cc b/test/msan/Linux/tcgetattr.cc
index e1425b84f..454b7fd15 100644
--- a/test/msan/Linux/tcgetattr.cc
+++ b/test/msan/Linux/tcgetattr.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p
 
 #include <assert.h>
 #include <glob.h>
diff --git a/test/msan/Linux/xattr.cc b/test/msan/Linux/xattr.cc
index 1beba117d..86cc2cd47 100644
--- a/test/msan/Linux/xattr.cc
+++ b/test/msan/Linux/xattr.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p 2>&1
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t %p 2>&1
 
 #include <argz.h>
 #include <assert.h>
diff --git a/test/msan/backtrace.cc b/test/msan/backtrace.cc
index 473e0ae8f..b6cfcbed4 100644
--- a/test/msan/backtrace.cc
+++ b/test/msan/backtrace.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 #include <assert.h>
 #include <execinfo.h>
diff --git a/test/msan/c-strdup.c b/test/msan/c-strdup.c
index 059300e42..b1e02b914 100644
--- a/test/msan/c-strdup.c
+++ b/test/msan/c-strdup.c
@@ -1,7 +1,7 @@
-// RUN: %clang_msan -m64 -O0 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clang_msan -m64 -O1 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clang_msan -m64 -O2 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clang_msan -m64 -O3 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clang_msan -O0 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clang_msan -O1 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clang_msan -O2 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clang_msan -O3 %s -o %t && %run %t >%t.out 2>&1
 
 // Test that strdup in C programs is intercepted.
 // GLibC headers translate strdup to __strdup at -O1 and higher.
diff --git a/test/msan/chained_origin.cc b/test/msan/chained_origin.cc
index 336bbd852..ae72c10b6 100644
--- a/test/msan/chained_origin.cc
+++ b/test/msan/chained_origin.cc
@@ -1,17 +1,17 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-STACK < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DHEAP=1 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DHEAP=1 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-HEAP < %t.out
 
 
-// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-STACK < %t.out
 
-// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DHEAP=1 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DHEAP=1 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-HEAP < %t.out
 
diff --git a/test/msan/chained_origin_empty_stack.cc b/test/msan/chained_origin_empty_stack.cc
index 36727e3d7..f1ed66b75 100644
--- a/test/msan/chained_origin_empty_stack.cc
+++ b/test/msan/chained_origin_empty_stack.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
 // RUN:     MSAN_OPTIONS=store_context_size=1 not %run %t 2>&1 | FileCheck %s
 
 // Test that stack trace for the intermediate store is not empty.
diff --git a/test/msan/chained_origin_limits.cc b/test/msan/chained_origin_limits.cc
index 0cc57f32a..90fd09a86 100644
--- a/test/msan/chained_origin_limits.cc
+++ b/test/msan/chained_origin_limits.cc
@@ -1,7 +1,7 @@
 // This test program creates a very large number of unique histories.
 
 // Heap origin.
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t
 
 // RUN: MSAN_OPTIONS=origin_history_size=7 not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
@@ -16,7 +16,7 @@
 // RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
 
 // Stack origin.
-// RUN: %clangxx_msan -DSTACK -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t
+// RUN: %clangxx_msan -DSTACK -fsanitize-memory-track-origins=2 -O3 %s -o %t
 
 // RUN: MSAN_OPTIONS=origin_history_size=7 not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
@@ -32,7 +32,7 @@
 
 
 // Heap origin, with calls.
-// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t
+// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -O3 %s -o %t
 
 // RUN: MSAN_OPTIONS=origin_history_size=7 not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
@@ -48,7 +48,7 @@
 
 
 // Stack origin, with calls.
-// RUN: %clangxx_msan -DSTACK -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t
+// RUN: %clangxx_msan -DSTACK -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -O3 %s -o %t
 
 // RUN: MSAN_OPTIONS=origin_history_size=7 not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
diff --git a/test/msan/chained_origin_memcpy.cc b/test/msan/chained_origin_memcpy.cc
index f4c2f7fca..3fe0b77a0 100644
--- a/test/msan/chained_origin_memcpy.cc
+++ b/test/msan/chained_origin_memcpy.cc
@@ -1,17 +1,17 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -DOFFSET=0 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DOFFSET=0 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DOFFSET=10 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DOFFSET=10 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 < %t.out
 
 
-// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -m64 -DOFFSET=0 -O3 %s -o %t && \
+// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=0 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 < %t.out
 
-// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=10 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=10 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 < %t.out
 
diff --git a/test/msan/chained_origin_with_signals.cc b/test/msan/chained_origin_with_signals.cc
index 2841e34a1..43dbdcca7 100644
--- a/test/msan/chained_origin_with_signals.cc
+++ b/test/msan/chained_origin_with_signals.cc
@@ -2,11 +2,11 @@
 // This is, in fact, undesired behavior caused by our chained origins
 // implementation being not async-signal-safe.
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
+// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
 // RUN:     not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
diff --git a/test/msan/check_mem_is_initialized.cc b/test/msan/check_mem_is_initialized.cc
index 7d2328810..e1d3b117e 100644
--- a/test/msan/check_mem_is_initialized.cc
+++ b/test/msan/check_mem_is_initialized.cc
@@ -1,19 +1,19 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
 
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/cxa_atexit.cc b/test/msan/cxa_atexit.cc
index 0aa36ecee..70384b9c9 100644
--- a/test/msan/cxa_atexit.cc
+++ b/test/msan/cxa_atexit.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p
 
 // PR17377: C++ module destructors get stale argument shadow.
 
diff --git a/test/msan/death-callback.cc b/test/msan/death-callback.cc
index 6d0488339..08cf2911b 100644
--- a/test/msan/death-callback.cc
+++ b/test/msan/death-callback.cc
@@ -1,10 +1,10 @@
-// RUN: %clangxx_msan -m64 -DERROR %s -o %t && not %run %t 2>&1 | \
+// RUN: %clangxx_msan -DERROR %s -o %t && not %run %t 2>&1 | \
 // RUN:     FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOCB
-// RUN: %clangxx_msan -m64 -DERROR -DMSANCB_SET %s -o %t && not %run %t 2>&1 | \
+// RUN: %clangxx_msan -DERROR -DMSANCB_SET %s -o %t && not %run %t 2>&1 | \
 // RUN:     FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CB
-// RUN: %clangxx_msan -m64 -DERROR -DMSANCB_SET -DMSANCB_CLEAR %s -o %t && not %run %t 2>&1 | \
+// RUN: %clangxx_msan -DERROR -DMSANCB_SET -DMSANCB_CLEAR %s -o %t && not %run %t 2>&1 | \
 // RUN:     FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOCB
-// RUN: %clangxx_msan -m64 -DMSANCB_SET %s -o %t && %run %t 2>&1 | \
+// RUN: %clangxx_msan -DMSANCB_SET %s -o %t && %run %t 2>&1 | \
 // RUN:     FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOCB
 
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/dlerror.cc b/test/msan/dlerror.cc
index 2c726d360..d5510b65c 100644
--- a/test/msan/dlerror.cc
+++ b/test/msan/dlerror.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 #include <assert.h>
 #include <dlfcn.h>
diff --git a/test/msan/dso-origin.cc b/test/msan/dso-origin.cc
index ba008c007..7f6244984 100644
--- a/test/msan/dso-origin.cc
+++ b/test/msan/dso-origin.cc
@@ -1,7 +1,7 @@
 // Build a library with origin tracking and an executable w/o origin tracking.
 // Test that origin tracking is enabled at runtime.
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -DBUILD_SO -fPIC -shared -o %t-so.so
-// RUN: %clangxx_msan -m64 -O0 %s %t-so.so -o %t && not %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -DBUILD_SO -fPIC -shared -o %t-so.so
+// RUN: %clangxx_msan -O0 %s %t-so.so -o %t && not %run %t 2>&1 | FileCheck %s
 
 #ifdef BUILD_SO
 
diff --git a/test/msan/dtls_test.c b/test/msan/dtls_test.c
index cb88ede2f..4036f71a7 100644
--- a/test/msan/dtls_test.c
+++ b/test/msan/dtls_test.c
@@ -1,5 +1,5 @@
-/* RUN: %clang_msan -g -m64 %s -o %t
-   RUN: %clang_msan -g -m64 %s -DBUILD_SO -fPIC -o %t-so.so -shared
+/* RUN: %clang_msan -g %s -o %t
+   RUN: %clang_msan -g %s -DBUILD_SO -fPIC -o %t-so.so -shared
    RUN: %run %t 2>&1
 
    Regression test for a bug in msan/glibc integration,
diff --git a/test/msan/errno.cc b/test/msan/errno.cc
index 8af8eb5ee..6ed0fd410 100644
--- a/test/msan/errno.cc
+++ b/test/msan/errno.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 #include <assert.h>
 #include <errno.h>
diff --git a/test/msan/fork.cc b/test/msan/fork.cc
index 10de8a937..78a62d549 100644
--- a/test/msan/fork.cc
+++ b/test/msan/fork.cc
@@ -2,7 +2,7 @@
 // Run a number of threads that create new chained origins, then fork
 // and verify that origin reads do not deadlock in the child process.
 
-// RUN: %clangxx_msan -std=c++11 -fsanitize-memory-track-origins=2 -g -m64 -O3 %s -o %t
+// RUN: %clangxx_msan -std=c++11 -fsanitize-memory-track-origins=2 -g -O3 %s -o %t
 // RUN: MSAN_OPTIONS=store_context_size=1000,origin_history_size=0,origin_history_per_stack_limit=0 %run %t |& FileCheck %s
 
 // Fun fact: if test output is redirected to a file (as opposed to
diff --git a/test/msan/ftime.cc b/test/msan/ftime.cc
index 2d0935d18..5ed9358f0 100644
--- a/test/msan/ftime.cc
+++ b/test/msan/ftime.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
 
 #include <assert.h>
 #include <sys/timeb.h>
diff --git a/test/msan/getaddrinfo-positive.cc b/test/msan/getaddrinfo-positive.cc
index 7658cd504..45c1b604d 100644
--- a/test/msan/getaddrinfo-positive.cc
+++ b/test/msan/getaddrinfo-positive.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
 #include <sys/types.h>
diff --git a/test/msan/getaddrinfo.cc b/test/msan/getaddrinfo.cc
index abab8bd78..c9dcf3ecb 100644
--- a/test/msan/getaddrinfo.cc
+++ b/test/msan/getaddrinfo.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 #include <sys/types.h>
 #include <sys/socket.h>
diff --git a/test/msan/getc_unlocked.c b/test/msan/getc_unlocked.c
index 7df958ad6..8468fed5c 100644
--- a/test/msan/getc_unlocked.c
+++ b/test/msan/getc_unlocked.c
@@ -1,12 +1,12 @@
-// RUN: %clangxx_msan -DGETC -m64 -O0 -g -xc++ %s -o %t && %run %t
-// RUN: %clangxx_msan -DGETC -m64 -O3 -g -xc++ %s -o %t && %run %t
-// RUN: %clang_msan -DGETC -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clang_msan -DGETC -m64 -O3 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -DGETC -O0 -g -xc++ %s -o %t && %run %t
+// RUN: %clangxx_msan -DGETC -O3 -g -xc++ %s -o %t && %run %t
+// RUN: %clang_msan -DGETC -O0 -g %s -o %t && %run %t
+// RUN: %clang_msan -DGETC -O3 -g %s -o %t && %run %t
 
-// RUN: %clangxx_msan -DGETCHAR -m64 -O0 -g -xc++ %s -o %t && %run %t
-// RUN: %clangxx_msan -DGETCHAR -m64 -O3 -g -xc++ %s -o %t && %run %t
-// RUN: %clang_msan -DGETCHAR -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clang_msan -DGETCHAR -m64 -O3 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -DGETCHAR -O0 -g -xc++ %s -o %t && %run %t
+// RUN: %clangxx_msan -DGETCHAR -O3 -g -xc++ %s -o %t && %run %t
+// RUN: %clang_msan -DGETCHAR -O0 -g %s -o %t && %run %t
+// RUN: %clang_msan -DGETCHAR -O3 -g %s -o %t && %run %t
 
 #include <assert.h>
 #include <stdio.h>
diff --git a/test/msan/heap-origin.cc b/test/msan/heap-origin.cc
index 0920001be..4f170f0d7 100644
--- a/test/msan/heap-origin.cc
+++ b/test/msan/heap-origin.cc
@@ -1,19 +1,19 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
 
 #include <stdlib.h>
diff --git a/test/msan/iconv.cc b/test/msan/iconv.cc
index ea6958b79..c4f253479 100644
--- a/test/msan/iconv.cc
+++ b/test/msan/iconv.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O0 -g -DPOSITIVE %s -o %t && not %run %t |& FileCheck %s
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g -DPOSITIVE %s -o %t && not %run %t |& FileCheck %s
 
 #include <assert.h>
 #include <iconv.h>
diff --git a/test/msan/if_indextoname.cc b/test/msan/if_indextoname.cc
index b74aec16c..7f7dea7d5 100644
--- a/test/msan/if_indextoname.cc
+++ b/test/msan/if_indextoname.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t 2>&1
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t 2>&1
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t 2>&1
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t 2>&1
 
 #include <assert.h>
 #include <errno.h>
diff --git a/test/msan/ifaddrs.cc b/test/msan/ifaddrs.cc
index 6a0db3a5b..568e6615b 100644
--- a/test/msan/ifaddrs.cc
+++ b/test/msan/ifaddrs.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p 2>&1
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t %p 2>&1
 
 #include <assert.h>
 #include <errno.h>
diff --git a/test/msan/initgroups.cc b/test/msan/initgroups.cc
index 94f6cd825..d11fd582a 100644
--- a/test/msan/initgroups.cc
+++ b/test/msan/initgroups.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 #include <sys/types.h>
 #include <grp.h>
diff --git a/test/msan/insertvalue_origin.cc b/test/msan/insertvalue_origin.cc
index 545debffa..a0c70023f 100644
--- a/test/msan/insertvalue_origin.cc
+++ b/test/msan/insertvalue_origin.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
 
 // Test origin propagation through insertvalue IR instruction.
diff --git a/test/msan/ioctl.cc b/test/msan/ioctl.cc
index caa5c274f..e21ef636c 100644
--- a/test/msan/ioctl.cc
+++ b/test/msan/ioctl.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O3 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O3 -g %s -o %t && %run %t
 
 #include <assert.h>
 #include <stdlib.h>
diff --git a/test/msan/ioctl_custom.cc b/test/msan/ioctl_custom.cc
index 7c7fde4bd..6df22d75e 100644
--- a/test/msan/ioctl_custom.cc
+++ b/test/msan/ioctl_custom.cc
@@ -1,8 +1,8 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O3 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O3 -g %s -o %t && %run %t
 
-// RUN: %clangxx_msan -DPOSITIVE -m64 -O0 -g %s -o %t && not %run %t 2>&1 | FileCheck %s
-// RUN: %clangxx_msan -DPOSITIVE -m64 -O3 -g %s -o %t && not %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -DPOSITIVE -O0 -g %s -o %t && not %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -DPOSITIVE -O3 -g %s -o %t && not %run %t 2>&1 | FileCheck %s
 
 #include <assert.h>
 #include <stdlib.h>
diff --git a/test/msan/ioctl_sound.cc b/test/msan/ioctl_sound.cc
index ed896f761..fb36c52f2 100644
--- a/test/msan/ioctl_sound.cc
+++ b/test/msan/ioctl_sound.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O3 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O3 -g %s -o %t && %run %t
 
 #include <assert.h>
 #include <fcntl.h>
diff --git a/test/msan/keep-going-dso.cc b/test/msan/keep-going-dso.cc
index 7975306c5..f32a513ea 100644
--- a/test/msan/keep-going-dso.cc
+++ b/test/msan/keep-going-dso.cc
@@ -1,15 +1,15 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // FileCheck --check-prefix=CHECK-KEEP-GOING %s <%t.out
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
 // FileCheck %s <%t.out
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
 // FileCheck --check-prefix=CHECK-KEEP-GOING %s <%t.out
 
-// RUN: %clangxx_msan -m64 -mllvm -msan-keep-going=1 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && not %run %t >%t.out 2>&1
 // FileCheck --check-prefix=CHECK-KEEP-GOING %s <%t.out
-// RUN: %clangxx_msan -m64 -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
 // FileCheck %s <%t.out
-// RUN: %clangxx_msan -m64 -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
 // FileCheck --check-prefix=CHECK-KEEP-GOING %s <%t.out
 
 // Test how -mllvm -msan-keep-going and MSAN_OPTIONS=keep_going affect reports
diff --git a/test/msan/keep-going.cc b/test/msan/keep-going.cc
index 6426574a9..577297563 100644
--- a/test/msan/keep-going.cc
+++ b/test/msan/keep-going.cc
@@ -1,19 +1,19 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // FileCheck %s <%t.out
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
 // FileCheck %s <%t.out
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
 // FileCheck %s <%t.out
 
-// RUN: %clangxx_msan -m64 -mllvm -msan-keep-going=1 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && not %run %t >%t.out 2>&1
 // FileCheck --check-prefix=CHECK-KEEP-GOING %s <%t.out
-// RUN: %clangxx_msan -m64 -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=keep_going=0 not %run %t >%t.out 2>&1
 // FileCheck %s <%t.out
-// RUN: %clangxx_msan -m64 -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=keep_going=1 not %run %t >%t.out 2>&1
 // FileCheck --check-prefix=CHECK-KEEP-GOING %s <%t.out
-// RUN: %clangxx_msan -m64 -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=halt_on_error=1 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=halt_on_error=1 not %run %t >%t.out 2>&1
 // FileCheck %s <%t.out
-// RUN: %clangxx_msan -m64 -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=halt_on_error=0 not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -mllvm -msan-keep-going=1 -O0 %s -o %t && MSAN_OPTIONS=halt_on_error=0 not %run %t >%t.out 2>&1
 // FileCheck --check-prefix=CHECK-KEEP-GOING %s <%t.out
 
 // Test behaviour of -mllvm -msan-keep-going and MSAN_OPTIONS=keep_going.
diff --git a/test/msan/mallinfo.cc b/test/msan/mallinfo.cc
index 3f3086830..3c3692969 100644
--- a/test/msan/mallinfo.cc
+++ b/test/msan/mallinfo.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
 
 #include <assert.h>
 #include <malloc.h>
diff --git a/test/msan/mktime.cc b/test/msan/mktime.cc
index c419057c3..997fb0ddb 100644
--- a/test/msan/mktime.cc
+++ b/test/msan/mktime.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O0 -g -DUNINIT %s -o %t && not %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g -DUNINIT %s -o %t && not %run %t 2>&1 | FileCheck %s
 
 #include <assert.h>
 #include <time.h>
diff --git a/test/msan/mmap_below_shadow.cc b/test/msan/mmap_below_shadow.cc
index 0b982d589..2b507d024 100644
--- a/test/msan/mmap_below_shadow.cc
+++ b/test/msan/mmap_below_shadow.cc
@@ -3,10 +3,10 @@
 // Without MAP_FIXED, we ignore the address hint and map somewhere in
 // application range.
 
-// RUN: %clangxx_msan -m64 -O0 -DFIXED=0 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O0 -DFIXED=1 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O0 -DFIXED=0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O0 -DFIXED=1 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -DFIXED=0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -DFIXED=1 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -DFIXED=0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -DFIXED=1 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
 
 #include <assert.h>
 #include <errno.h>
diff --git a/test/msan/msan_check_mem_is_initialized.cc b/test/msan/msan_check_mem_is_initialized.cc
index 33558cd2f..599cf2d7d 100644
--- a/test/msan/msan_check_mem_is_initialized.cc
+++ b/test/msan/msan_check_mem_is_initialized.cc
@@ -1,9 +1,9 @@
-// RUN: %clangxx_msan -m64 -O0 -g -DPOSITIVE %s -o %t
+// RUN: %clangxx_msan -O0 -g -DPOSITIVE %s -o %t
 // RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK
 // RUN: MSAN_OPTIONS=verbosity=1 not %run %t 2>&1 | \
 // RUN:     FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-VERBOSE
 
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
 
 #include <sanitizer/msan_interface.h>
 
diff --git a/test/msan/msan_dump_shadow.cc b/test/msan/msan_dump_shadow.cc
index 08371e306..543fa7013 100644
--- a/test/msan/msan_dump_shadow.cc
+++ b/test/msan/msan_dump_shadow.cc
@@ -1,10 +1,10 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/msan_print_shadow.cc b/test/msan/msan_print_shadow.cc
index f4894596a..9668be2c2 100644
--- a/test/msan/msan_print_shadow.cc
+++ b/test/msan/msan_print_shadow.cc
@@ -1,10 +1,10 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NO-ORIGINS < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ORIGINS < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ORIGINS --check-prefix=CHECK-ORIGINS-2 < %t.out
 
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/msan_print_shadow2.cc b/test/msan/msan_print_shadow2.cc
index 343ee9e5c..5095081c9 100644
--- a/test/msan/msan_print_shadow2.cc
+++ b/test/msan/msan_print_shadow2.cc
@@ -1,10 +1,10 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NO-ORIGINS < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ORIGINS < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ORIGINS < %t.out
 
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/msan_print_shadow3.cc b/test/msan/msan_print_shadow3.cc
index c605ef188..b29f3222d 100644
--- a/test/msan/msan_print_shadow3.cc
+++ b/test/msan/msan_print_shadow3.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
 #include <stdint.h>
diff --git a/test/msan/mul_by_const.cc b/test/msan/mul_by_const.cc
index a975bb921..8240fdbed 100644
--- a/test/msan/mul_by_const.cc
+++ b/test/msan/mul_by_const.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && %run %t
+// RUN: %clangxx_msan -O2 %s -o %t && %run %t
 
 #include <sanitizer/msan_interface.h>
 
diff --git a/test/msan/no_sanitize_memory.cc b/test/msan/no_sanitize_memory.cc
index c5643816c..5c53ee4f3 100644
--- a/test/msan/no_sanitize_memory.cc
+++ b/test/msan/no_sanitize_memory.cc
@@ -1,12 +1,12 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t >%t.out 2>&1
 
-// RUN: %clangxx_msan -m64 -O0 %s -o %t -DCHECK_IN_F && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O1 %s -o %t -DCHECK_IN_F && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O2 %s -o %t -DCHECK_IN_F && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O3 %s -o %t -DCHECK_IN_F && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t -DCHECK_IN_F && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t -DCHECK_IN_F && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t -DCHECK_IN_F && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t -DCHECK_IN_F && %run %t >%t.out 2>&1
 
 // Test that (no_sanitize_memory) functions
 // * don't check shadow values (-DCHECK_IN_F)
diff --git a/test/msan/no_sanitize_memory_prop.cc b/test/msan/no_sanitize_memory_prop.cc
index 4275ebbf7..bfd4194dd 100644
--- a/test/msan/no_sanitize_memory_prop.cc
+++ b/test/msan/no_sanitize_memory_prop.cc
@@ -1,7 +1,7 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && %run %t >%t.out 2>&1
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t && %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t >%t.out 2>&1
 
 // Test that (no_sanitize_memory) functions DO NOT propagate shadow.
 
diff --git a/test/msan/obstack.cc b/test/msan/obstack.cc
index 222f43b83..f1f53be4c 100644
--- a/test/msan/obstack.cc
+++ b/test/msan/obstack.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O0 -g -DPOSITIVE %s -o %t && not %run %t |& FileCheck %s
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g -DPOSITIVE %s -o %t && not %run %t |& FileCheck %s
 
 #include <obstack.h>
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/origin-store-long.cc b/test/msan/origin-store-long.cc
index a7c2b7a7d..5c9fe04b7 100644
--- a/test/msan/origin-store-long.cc
+++ b/test/msan/origin-store-long.cc
@@ -1,7 +1,7 @@
 // Check that 8-byte store updates origin for the full store range.
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
 
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/param_tls_limit.cc b/test/msan/param_tls_limit.cc
index 869afc935..982ae1ebd 100644
--- a/test/msan/param_tls_limit.cc
+++ b/test/msan/param_tls_limit.cc
@@ -1,9 +1,9 @@
 // ParamTLS has limited size. Everything that does not fit is considered fully
 // initialized.
 
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && %run %t
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O0 %s -o %t && %run %t
 
 #include <sanitizer/msan_interface.h>
 #include <assert.h>
diff --git a/test/msan/print_stats.cc b/test/msan/print_stats.cc
index 74943835b..39af50417 100644
--- a/test/msan/print_stats.cc
+++ b/test/msan/print_stats.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -g %s -o %t 
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -g %s -o %t 
 // RUN: %run %t 2>&1 | \
 // RUN:   FileCheck --check-prefix=CHECK --check-prefix=CHECK-NOSTATS %s
 // RUN: MSAN_OPTIONS=print_stats=1 %run %t 2>&1 | \
@@ -6,13 +6,13 @@
 // RUN: MSAN_OPTIONS=print_stats=1,atexit=1 %run %t 2>&1 | \
 // RUN:   FileCheck --check-prefix=CHECK --check-prefix=CHECK-STATS %s
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -g -DPOSITIVE=1 %s -o %t 
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -g -DPOSITIVE=1 %s -o %t 
 // RUN: not %run %t 2>&1 | \
 // RUN:   FileCheck --check-prefix=CHECK --check-prefix=CHECK-NOSTATS %s
 // RUN: MSAN_OPTIONS=print_stats=1 not %run %t 2>&1 | \
 // RUN:   FileCheck --check-prefix=CHECK --check-prefix=CHECK-STATS %s
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -g -DPOSITIVE=1 -mllvm -msan-keep-going=1 %s -o %t 
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -g -DPOSITIVE=1 -mllvm -msan-keep-going=1 %s -o %t 
 // RUN: not %run %t 2>&1 | \
 // RUN:  FileCheck --check-prefix=CHECK --check-prefix=CHECK-NOSTATS --check-prefix=CHECK-KEEPGOING %s
 // RUN: MSAN_OPTIONS=print_stats=1 not %run %t 2>&1 | \
diff --git a/test/msan/pthread_getattr_np_deadlock.cc b/test/msan/pthread_getattr_np_deadlock.cc
index 07f19cb61..0f5228085 100644
--- a/test/msan/pthread_getattr_np_deadlock.cc
+++ b/test/msan/pthread_getattr_np_deadlock.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -fsanitize-memory-track-origins -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && %run %t
 
 // Regression test for a deadlock in pthread_getattr_np
 
diff --git a/test/msan/rand_r.cc b/test/msan/rand_r.cc
index d6bdb1dea..f40cf9f96 100644
--- a/test/msan/rand_r.cc
+++ b/test/msan/rand_r.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O0 -g -DUNINIT %s -o %t && not %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g -DUNINIT %s -o %t && not %run %t 2>&1 | FileCheck %s
 
 #include <assert.h>
 #include <stdio.h>
diff --git a/test/msan/readdir64.cc b/test/msan/readdir64.cc
index 4f00d1838..e77ada6ac 100644
--- a/test/msan/readdir64.cc
+++ b/test/msan/readdir64.cc
@@ -1,12 +1,12 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O1 %s -o %t && %run %t
+// RUN: %clangxx_msan -O2 %s -o %t && %run %t
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t
 
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O1 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O2 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
-// RUN: %clangxx_msan -m64 -O3 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
+// RUN: %clangxx_msan -O1 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
+// RUN: %clangxx_msan -O2 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
+// RUN: %clangxx_msan -O3 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t
 
 // Test that readdir64 is intercepted as well as readdir.
 
diff --git a/test/msan/realloc-large-origin.cc b/test/msan/realloc-large-origin.cc
index de39394cb..ce25ad8c4 100644
--- a/test/msan/realloc-large-origin.cc
+++ b/test/msan/realloc-large-origin.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
 // This is a regression test: there used to be broken "stored to memory at"
diff --git a/test/msan/realloc-origin.cc b/test/msan/realloc-origin.cc
index 6707cc904..e6893713e 100644
--- a/test/msan/realloc-origin.cc
+++ b/test/msan/realloc-origin.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
 // This test relies on realloc from 100 to 101 being done in-place.
diff --git a/test/msan/report-demangling.cc b/test/msan/report-demangling.cc
index e6d5c27ec..e75ba87ae 100644
--- a/test/msan/report-demangling.cc
+++ b/test/msan/report-demangling.cc
@@ -1,7 +1,7 @@
 // Test that function name is mangled in the "created by an allocation" line,
 // and demangled in the single-frame "stack trace" that follows.
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
 
 __attribute__((noinline))
diff --git a/test/msan/scandir.cc b/test/msan/scandir.cc
index 571ba4f60..8adfe0066 100644
--- a/test/msan/scandir.cc
+++ b/test/msan/scandir.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t %p
 
 #include <assert.h>
 #include <glob.h>
diff --git a/test/msan/scandir_null.cc b/test/msan/scandir_null.cc
index e7663dc43..94ac31a41 100644
--- a/test/msan/scandir_null.cc
+++ b/test/msan/scandir_null.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p
-// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p
+// RUN: %clangxx_msan -O3 %s -o %t && %run %t %p
 
 #include <assert.h>
 #include <glob.h>
diff --git a/test/msan/select.cc b/test/msan/select.cc
index 89de75eba..7b8c34785 100644
--- a/test/msan/select.cc
+++ b/test/msan/select.cc
@@ -1,10 +1,10 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
 #include <stdlib.h>
diff --git a/test/msan/setlocale.cc b/test/msan/setlocale.cc
index b7007f78d..796f4454e 100644
--- a/test/msan/setlocale.cc
+++ b/test/msan/setlocale.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 #include <assert.h>
 #include <locale.h>
diff --git a/test/msan/stack-origin.cc b/test/msan/stack-origin.cc
index c39c3a8cf..e69c07224 100644
--- a/test/msan/stack-origin.cc
+++ b/test/msan/stack-origin.cc
@@ -1,19 +1,19 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
 
 #include <stdlib.h>
diff --git a/test/msan/stack-origin2.cc b/test/msan/stack-origin2.cc
index 0ba57607d..6c7428c2d 100644
--- a/test/msan/stack-origin2.cc
+++ b/test/msan/stack-origin2.cc
@@ -1,21 +1,21 @@
 // Test that on the second entry to a function the origins are still right.
 
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
 
 #include <stdlib.h>
diff --git a/test/msan/strlen_of_shadow.cc b/test/msan/strlen_of_shadow.cc
index 8f1b4e1fc..d6f8be70b 100644
--- a/test/msan/strlen_of_shadow.cc
+++ b/test/msan/strlen_of_shadow.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 // Check that strlen() and similar intercepted functions can be called on shadow
 // memory.
diff --git a/test/msan/strxfrm.cc b/test/msan/strxfrm.cc
index b930a6af6..9a30d03c3 100644
--- a/test/msan/strxfrm.cc
+++ b/test/msan/strxfrm.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
 
 #include <assert.h>
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/sync_lock_set_and_test.cc b/test/msan/sync_lock_set_and_test.cc
index b6d344a61..11fd14fae 100644
--- a/test/msan/sync_lock_set_and_test.cc
+++ b/test/msan/sync_lock_set_and_test.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 int main(void) {
   int i;
diff --git a/test/msan/textdomain.cc b/test/msan/textdomain.cc
index 47e991e8c..760debd68 100644
--- a/test/msan/textdomain.cc
+++ b/test/msan/textdomain.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
 
 #include <libintl.h>
 #include <stdio.h>
diff --git a/test/msan/times.cc b/test/msan/times.cc
index a042f548d..7c8188411 100644
--- a/test/msan/times.cc
+++ b/test/msan/times.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 -g %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
 
 #include <assert.h>
 #include <stdlib.h>
diff --git a/test/msan/tls_reuse.cc b/test/msan/tls_reuse.cc
index e024a5a8d..78a328fa3 100644
--- a/test/msan/tls_reuse.cc
+++ b/test/msan/tls_reuse.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 // Check that when TLS block is reused between threads, its shadow is cleaned.
 
diff --git a/test/msan/tzset.cc b/test/msan/tzset.cc
index ed61d7bcc..05915e047 100644
--- a/test/msan/tzset.cc
+++ b/test/msan/tzset.cc
@@ -1,4 +1,4 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
 #include <stdlib.h>
 #include <string.h>
diff --git a/test/msan/unaligned_read_origin.cc b/test/msan/unaligned_read_origin.cc
index e5618efbd..b04800a13 100644
--- a/test/msan/unaligned_read_origin.cc
+++ b/test/msan/unaligned_read_origin.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
 
 #include <sanitizer/msan_interface.h>
diff --git a/test/msan/unpoison_string.cc b/test/msan/unpoison_string.cc
index ac947b9cf..84d952833 100644
--- a/test/msan/unpoison_string.cc
+++ b/test/msan/unpoison_string.cc
@@ -1,6 +1,6 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t
 // RUN: %run %t
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t
 // RUN: %run %t
 
 #include <assert.h>
diff --git a/test/msan/use-after-free.cc b/test/msan/use-after-free.cc
index 869bad98e..c50512447 100644
--- a/test/msan/use-after-free.cc
+++ b/test/msan/use-after-free.cc
@@ -1,19 +1,19 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
-// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
-// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
+// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
 
 #include <stdlib.h>
diff --git a/test/msan/vector_cvt.cc b/test/msan/vector_cvt.cc
index bd9b6a8b8..d08ec3e3d 100644
--- a/test/msan/vector_cvt.cc
+++ b/test/msan/vector_cvt.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
-// RUN: %clangxx_msan -DPOSITIVE -m64 -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_msan -O0 %s -o %t && %run %t
+// RUN: %clangxx_msan -DPOSITIVE -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
 
 #include <emmintrin.h>
 
diff --git a/test/msan/vector_select.cc b/test/msan/vector_select.cc
index afeb1ad50..4bfeba69c 100644
--- a/test/msan/vector_select.cc
+++ b/test/msan/vector_select.cc
@@ -1,5 +1,5 @@
-// RUN: %clangxx_msan -m64 -O0 %s -c -o %t
-// RUN: %clangxx_msan -m64 -O3 %s -c -o %t
+// RUN: %clangxx_msan -O0 %s -c -o %t
+// RUN: %clangxx_msan -O3 %s -c -o %t
 
 // Regression test for MemorySanitizer instrumentation of a select instruction
 // with vector arguments.