[llvm-commits] [llvm] r125023 - in /llvm/trunk: lib/Target/ARM/ARMISelLowering.cpp test/CodeGen/ARM/atomic-cmp.ll

[Evan Cheng]

Author: evancheng
Date: Mon Feb  7 12:50:47 2011
New Revision: 125023

URL: http://llvm.org/viewvc/llvm-project?rev=125023&view=rev
Log:
Fix an obvious typo which caused an isel assertion. rdar://8964854.

Added:
    llvm/trunk/test/CodeGen/ARM/atomic-cmp.ll
Modified:
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=125023&r1=125022&r2=125023&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Mon Feb  7 12:50:47 2011
@@ -4344,7 +4344,7 @@
   default: llvm_unreachable("unsupported size for AtomicCmpSwap!");
   case 1:
     ldrOpc = isThumb2 ? ARM::t2LDREXB : ARM::LDREXB;
-    strOpc = isThumb2 ? ARM::t2LDREXB : ARM::STREXB;
+    strOpc = isThumb2 ? ARM::t2STREXB : ARM::STREXB;
     break;
   case 2:
     ldrOpc = isThumb2 ? ARM::t2LDREXH : ARM::LDREXH;

Added: llvm/trunk/test/CodeGen/ARM/atomic-cmp.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/atomic-cmp.ll?rev=125023&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/atomic-cmp.ll (added)
+++ llvm/trunk/test/CodeGen/ARM/atomic-cmp.ll Mon Feb  7 12:50:47 2011
@@ -0,0 +1,17 @@
+; RUN: llc < %s -mtriple=armv7-apple-darwin   | FileCheck %s -check-prefix=ARM
+; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s -check-prefix=T2
+; rdar://8964854
+
+define i8 @t(i8* %a, i8 %b, i8 %c) nounwind {
+; ARM: t:
+; ARM: ldrexb
+; ARM: strexb
+
+; T2: t:
+; T2: ldrexb
+; T2: strexb
+  %tmp0 = tail call i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* %a, i8 %b, i8 %c)
+  ret i8 %tmp0
+}
+
+declare i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* nocapture, i8, i8) nounwind