Bitcode: Include any strings added to the string table in the module hash.

Differential Revision: https://reviews.llvm.org/D35037

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307286 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 39 insertions, 4 deletions

diff --git a/test/Bitcode/Inputs/module-hash-strtab1.ll b/test/Bitcode/Inputs/module-hash-strtab1.ll
new file mode 100644
index 00000000000..6b4a3fce07e
--- /dev/null
+++ b/test/Bitcode/Inputs/module-hash-strtab1.ll
@@ -0,0 +1,10 @@
+source_filename = "foo.c"
+
+$com = comdat any
+
+define void @main() comdat($com) {
+  call void @bar()
+  ret void
+}
+
+declare void @bar()
diff --git a/test/Bitcode/Inputs/module-hash-strtab2.ll b/test/Bitcode/Inputs/module-hash-strtab2.ll
new file mode 100644
index 00000000000..87d2478145b
--- /dev/null
+++ b/test/Bitcode/Inputs/module-hash-strtab2.ll
@@ -0,0 +1,10 @@
+source_filename = "foo.c"
+
+$dat = comdat any
+
+define void @main() comdat($dat) {
+  call void @foo()
+  ret void
+}
+
+declare void @foo()
diff --git a/test/Bitcode/module-hash-strtab.ll b/test/Bitcode/module-hash-strtab.ll
new file mode 100644
index 00000000000..e5a1fb0c407
--- /dev/null
+++ b/test/Bitcode/module-hash-strtab.ll
@@ -0,0 +1,15 @@
+; RUN: opt -module-hash %s -o - | llvm-bcanalyzer -dump | grep '<HASH' > %t
+; RUN: opt -module-hash %S/Inputs/module-hash-strtab1.ll -o - | llvm-bcanalyzer -dump | grep '<HASH' >> %t
+; RUN: opt -module-hash %S/Inputs/module-hash-strtab2.ll -o - | llvm-bcanalyzer -dump | grep '<HASH' >> %t
+; RUN: sort %t | uniq | count 3
+
+source_filename = "foo.c"
+
+$com = comdat any
+
+define void @main() comdat($com) {
+  call void @foo()
+  ret void
+}
+
+declare void @foo()
diff --git a/test/Bitcode/module_hash.ll b/test/Bitcode/module_hash.ll
index 56f3fdc4b7e..b24819fe6fd 100644
--- a/test/Bitcode/module_hash.ll
+++ b/test/Bitcode/module_hash.ll
@@ -1,7 +1,7 @@
 ; Check per module hash.
-; RUN: opt  -module-hash  %s -o - | llvm-bcanalyzer -dump | FileCheck %s --check-prefix=MOD1
+; RUN: opt  -module-hash  %s -o - | llvm-bcanalyzer -dump -check-hash=foo | FileCheck %s --check-prefix=MOD1
 ; MOD1: <HASH op0={{[0-9]*}} op1={{[0-9]*}} op2={{[0-9]*}} op3={{[0-9]*}} op4={{[0-9]*}} (match)/>
-; RUN: opt  -module-hash  %p/Inputs/module_hash.ll -o - | llvm-bcanalyzer -dump | FileCheck %s --check-prefix=MOD2
+; RUN: opt  -module-hash  %p/Inputs/module_hash.ll -o - | llvm-bcanalyzer -dump -check-hash=bar | FileCheck %s --check-prefix=MOD2
 ; MOD2: <HASH op0={{[0-9]*}} op1={{[0-9]*}} op2={{[0-9]*}} op3={{[0-9]*}} op4={{[0-9]*}} (match)/>
 
 ; Check that the hash matches in the combined index.
@@ -21,8 +21,8 @@
 ; RUN: cat %t.hash | FileCheck %s --check-prefix=COMBINED
 
 ; First capture the value of the hash for the two modules.
-; COMBINED: <HASH op0=[[HASH1_1:[0-9]*]] op1=[[HASH1_2:[0-9]*]] op2=[[HASH1_3:[0-9]*]] op3=[[HASH1_4:[0-9]*]] op4=[[HASH1_5:[0-9]*]] (match)/>
-; COMBINED: <HASH op0=[[HASH2_1:[0-9]*]] op1=[[HASH2_2:[0-9]*]] op2=[[HASH2_3:[0-9]*]] op3=[[HASH2_4:[0-9]*]] op4=[[HASH2_5:[0-9]*]] (match)/>
+; COMBINED: <HASH op0=[[HASH1_1:[0-9]*]] op1=[[HASH1_2:[0-9]*]] op2=[[HASH1_3:[0-9]*]] op3=[[HASH1_4:[0-9]*]] op4=[[HASH1_5:[0-9]*]]/>
+; COMBINED: <HASH op0=[[HASH2_1:[0-9]*]] op1=[[HASH2_2:[0-9]*]] op2=[[HASH2_3:[0-9]*]] op3=[[HASH2_4:[0-9]*]] op4=[[HASH2_5:[0-9]*]]/>
 
 ; Validate against the value extracted from the combined index
 ; COMBINED-DAG: <HASH abbrevid={{[0-9]*}} op0=[[HASH1_1]] op1=[[HASH1_2]] op2=[[HASH1_3]] op3=[[HASH1_4]] op4=[[HASH1_5]]/>