Merging r322372 and r322767:

------------------------------------------------------------------------
r322372 | nemanjai | 2018-01-12 15:58:41 +0100 (Fri, 12 Jan 2018) | 10 lines

[PowerPC] Zero-extend the compare operand for ATOMIC_CMP_SWAP

Part of the fix for https://bugs.llvm.org/show_bug.cgi?id=35812.
This patch ensures that the compare operand for the atomic compare and swap
is properly zero-extended to 32 bits if applicable.
A follow-up commit will fix the extension for the SETCC node generated when
expanding an ATOMIC_CMP_SWAP_WITH_SUCCESS. That will complete the bug fix.

Differential Revision: https://reviews.llvm.org/D41856

------------------------------------------------------------------------

------------------------------------------------------------------------
r322767 | efriedma | 2018-01-17 23:04:36 +0100 (Wed, 17 Jan 2018) | 12 lines

[LegalizeDAG] Fix ATOMIC_CMP_SWAP_WITH_SUCCESS legalization.

The code wasn't zero-extending correctly, so the comparison could
spuriously fail.

Adds some AArch64 tests to cover this case.

Inspired by D41791.

Differential Revision: https://reviews.llvm.org/D41798


------------------------------------------------------------------------


git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_60@323334 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 134 insertions, 0 deletions

diff --git a/test/CodeGen/PowerPC/PR35812-neg-cmpxchg.ll b/test/CodeGen/PowerPC/PR35812-neg-cmpxchg.ll
new file mode 100644
index 00000000000..093899690d0
--- /dev/null
+++ b/test/CodeGen/PowerPC/PR35812-neg-cmpxchg.ll
@@ -0,0 +1,94 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; Make sure that a negative value for the compare-and-swap is zero extended
+; from i8/i16 to i32 since it will be compared for equality.
+; RUN: llc -mtriple=powerpc64le-linux-gnu -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple=powerpc64le-linux-gnu -mcpu=pwr7 < %s | FileCheck %s --check-prefix=CHECK-P7
+
+@str = private unnamed_addr constant [46 x i8] c"FAILED: __atomic_compare_exchange_n() failed.\00"
+@str.1 = private unnamed_addr constant [59 x i8] c"FAILED: __atomic_compare_exchange_n() set the wrong value.\00"
+@str.2 = private unnamed_addr constant [7 x i8] c"PASSED\00"
+
+define signext i32 @main() {
+; CHECK-LABEL: main:
+; CHECK:    li 3, -32477
+; CHECK:    lis 12, 0
+; CHECK:    li 6, 234
+; CHECK:    sth 3, 46(1)
+; CHECK:    ori 4, 12, 33059
+; CHECK:    sync
+; CHECK:  .LBB0_1: # %L.entry
+; CHECK:    lharx 3, 0, 5
+; CHECK:    cmpw 4, 3
+; CHECK:    bne 0, .LBB0_3
+; CHECK:    sthcx. 6, 0, 5
+; CHECK:    bne 0, .LBB0_1
+; CHECK:    b .LBB0_4
+; CHECK:  .LBB0_3: # %L.entry
+; CHECK:    sthcx. 3, 0, 5
+; CHECK:  .LBB0_4: # %L.entry
+; CHECK:    cmplwi 3, 33059
+; CHECK:    lwsync
+; CHECK:    lhz 3, 46(1)
+; CHECK:    cmplwi 3, 234
+;
+; CHECK-P7-LABEL: main:
+; CHECK-P7:    lis 4, 0
+; CHECK-P7:    li 7, 0
+; CHECK-P7:    li 3, -32477
+; CHECK-P7:    sth 3, 46(1)
+; CHECK-P7:    li 5, 234
+; CHECK-P7:    ori 4, 4, 33059
+; CHECK-P7:    rlwinm 3, 6, 3, 27, 27
+; CHECK-P7:    ori 7, 7, 65535
+; CHECK-P7:    sync
+; CHECK-P7:    slw 8, 5, 3
+; CHECK-P7:    slw 5, 7, 3
+; CHECK-P7:    slw 9, 4, 3
+; CHECK-P7:    and 7, 8, 5
+; CHECK-P7:    rldicr 4, 6, 0, 61
+; CHECK-P7:    and 8, 9, 5
+; CHECK-P7:  .LBB0_1: # %L.entry
+; CHECK-P7:    lwarx 9, 0, 4
+; CHECK-P7:    and 6, 9, 5
+; CHECK-P7:    cmpw 0, 6, 8
+; CHECK-P7:    bne 0, .LBB0_3
+; CHECK-P7:    andc 9, 9, 5
+; CHECK-P7:    or 9, 9, 7
+; CHECK-P7:    stwcx. 9, 0, 4
+; CHECK-P7:    bne 0, .LBB0_1
+; CHECK-P7:    b .LBB0_4
+; CHECK-P7:  .LBB0_3: # %L.entry
+; CHECK-P7:    stwcx. 9, 0, 4
+; CHECK-P7:  .LBB0_4: # %L.entry
+; CHECK-P7:    srw 3, 6, 3
+; CHECK-P7:    lwsync
+; CHECK-P7:    cmplwi 3, 33059
+; CHECK-P7:    lhz 3, 46(1)
+; CHECK-P7:    cmplwi 3, 234
+L.entry:
+  %value.addr = alloca i16, align 2
+  store i16 -32477, i16* %value.addr, align 2
+  %0 = cmpxchg i16* %value.addr, i16 -32477, i16 234 seq_cst seq_cst
+  %1 = extractvalue { i16, i1 } %0, 1
+  br i1 %1, label %L.B0000, label %L.B0003
+
+L.B0003:                                          ; preds = %L.entry
+  %puts = call i32 @puts(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @str, i64 0, i64 0))
+  ret i32 1
+
+L.B0000:                                          ; preds = %L.entry
+  %2 = load i16, i16* %value.addr, align 2
+  %3 = icmp eq i16 %2, 234
+  br i1 %3, label %L.B0001, label %L.B0005
+
+L.B0005:                                          ; preds = %L.B0000
+  %puts1 = call i32 @puts(i8* getelementptr inbounds ([59 x i8], [59 x i8]* @str.1, i64 0, i64 0))
+  ret i32 1
+
+L.B0001:                                          ; preds = %L.B0000
+  %puts2 = call i32 @puts(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @str.2, i64 0, i64 0))
+  ret i32 0
+}
+
+; Function Attrs: nounwind
+declare i32 @puts(i8* nocapture readonly) #0
diff --git a/test/CodeGen/PowerPC/atomics-regression.ll b/test/CodeGen/PowerPC/atomics-regression.ll
index 7079f6dd52e..daf55fc426d 100644
--- a/test/CodeGen/PowerPC/atomics-regression.ll
+++ b/test/CodeGen/PowerPC/atomics-regression.ll
@@ -404,6 +404,7 @@ define void @test39() {
 define void @test40(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test40:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    b .LBB40_2
 ; PPC64LE-NEXT:    .p2align 5
 ; PPC64LE-NEXT:  .LBB40_1:
@@ -423,6 +424,7 @@ define void @test40(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test41(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test41:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:  .LBB41_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
 ; PPC64LE-NEXT:    cmpw 4, 6
@@ -444,6 +446,7 @@ define void @test41(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test42(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test42:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:  .LBB42_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
 ; PPC64LE-NEXT:    cmpw 4, 6
@@ -465,6 +468,7 @@ define void @test42(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test43(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test43:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:    b .LBB43_2
 ; PPC64LE-NEXT:    .p2align 5
@@ -485,6 +489,7 @@ define void @test43(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test44(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test44:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:    b .LBB44_2
 ; PPC64LE-NEXT:    .p2align 5
@@ -505,6 +510,7 @@ define void @test44(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test45(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test45:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:  .LBB45_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -527,6 +533,7 @@ define void @test45(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test46(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test46:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:  .LBB46_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -549,6 +556,7 @@ define void @test46(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test47(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test47:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB47_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -571,6 +579,7 @@ define void @test47(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test48(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test48:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB48_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -593,6 +602,7 @@ define void @test48(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test49(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test49:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB49_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -615,6 +625,7 @@ define void @test49(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test50(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test50:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    b .LBB50_2
 ; PPC64LE-NEXT:    .p2align 5
 ; PPC64LE-NEXT:  .LBB50_1:
@@ -634,6 +645,7 @@ define void @test50(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test51(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test51:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:  .LBB51_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
 ; PPC64LE-NEXT:    cmpw 4, 6
@@ -655,6 +667,7 @@ define void @test51(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test52(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test52:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:  .LBB52_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
 ; PPC64LE-NEXT:    cmpw 4, 6
@@ -676,6 +689,7 @@ define void @test52(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test53(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test53:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:    b .LBB53_2
 ; PPC64LE-NEXT:    .p2align 5
@@ -696,6 +710,7 @@ define void @test53(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test54(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test54:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:    b .LBB54_2
 ; PPC64LE-NEXT:    .p2align 5
@@ -716,6 +731,7 @@ define void @test54(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test55(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test55:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:  .LBB55_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -738,6 +754,7 @@ define void @test55(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test56(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test56:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:  .LBB56_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -760,6 +777,7 @@ define void @test56(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test57(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test57:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB57_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -782,6 +800,7 @@ define void @test57(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test58(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test58:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB58_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -804,6 +823,7 @@ define void @test58(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test59(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test59:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB59_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -1248,6 +1268,7 @@ define void @test79(i64* %ptr, i64 %cmp, i64 %val) {
 define void @test80(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test80:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    b .LBB80_2
 ; PPC64LE-NEXT:    .p2align 5
 ; PPC64LE-NEXT:  .LBB80_1:
@@ -1267,6 +1288,7 @@ define void @test80(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test81(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test81:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:  .LBB81_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
 ; PPC64LE-NEXT:    cmpw 4, 6
@@ -1288,6 +1310,7 @@ define void @test81(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test82(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test82:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:  .LBB82_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
 ; PPC64LE-NEXT:    cmpw 4, 6
@@ -1309,6 +1332,7 @@ define void @test82(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test83(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test83:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:    b .LBB83_2
 ; PPC64LE-NEXT:    .p2align 5
@@ -1329,6 +1353,7 @@ define void @test83(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test84(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test84:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:    b .LBB84_2
 ; PPC64LE-NEXT:    .p2align 5
@@ -1349,6 +1374,7 @@ define void @test84(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test85(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test85:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:  .LBB85_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -1371,6 +1397,7 @@ define void @test85(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test86(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test86:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:  .LBB86_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -1393,6 +1420,7 @@ define void @test86(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test87(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test87:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB87_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -1415,6 +1443,7 @@ define void @test87(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test88(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test88:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB88_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -1437,6 +1466,7 @@ define void @test88(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test89(i8* %ptr, i8 %cmp, i8 %val) {
 ; PPC64LE-LABEL: test89:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 24, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB89_1:
 ; PPC64LE-NEXT:    lbarx 6, 0, 3
@@ -1459,6 +1489,7 @@ define void @test89(i8* %ptr, i8 %cmp, i8 %val) {
 define void @test90(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test90:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    b .LBB90_2
 ; PPC64LE-NEXT:    .p2align 5
 ; PPC64LE-NEXT:  .LBB90_1:
@@ -1478,6 +1509,7 @@ define void @test90(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test91(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test91:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:  .LBB91_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
 ; PPC64LE-NEXT:    cmpw 4, 6
@@ -1499,6 +1531,7 @@ define void @test91(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test92(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test92:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:  .LBB92_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
 ; PPC64LE-NEXT:    cmpw 4, 6
@@ -1520,6 +1553,7 @@ define void @test92(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test93(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test93:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:    b .LBB93_2
 ; PPC64LE-NEXT:    .p2align 5
@@ -1540,6 +1574,7 @@ define void @test93(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test94(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test94:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:    b .LBB94_2
 ; PPC64LE-NEXT:    .p2align 5
@@ -1560,6 +1595,7 @@ define void @test94(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test95(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test95:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:  .LBB95_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -1582,6 +1618,7 @@ define void @test95(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test96(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test96:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    lwsync
 ; PPC64LE-NEXT:  .LBB96_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -1604,6 +1641,7 @@ define void @test96(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test97(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test97:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB97_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -1626,6 +1664,7 @@ define void @test97(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test98(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test98:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB98_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3
@@ -1648,6 +1687,7 @@ define void @test98(i16* %ptr, i16 %cmp, i16 %val) {
 define void @test99(i16* %ptr, i16 %cmp, i16 %val) {
 ; PPC64LE-LABEL: test99:
 ; PPC64LE:       # %bb.0:
+; PPC64LE-NEXT:    rlwinm 4, 4, 0, 16, 31
 ; PPC64LE-NEXT:    sync
 ; PPC64LE-NEXT:  .LBB99_1:
 ; PPC64LE-NEXT:    lharx 6, 0, 3