diff options
Diffstat (limited to 'test/CodeGen/X86/shl_undef.ll')
| -rw-r--r-- | test/CodeGen/X86/shl_undef.ll | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/test/CodeGen/X86/shl_undef.ll b/test/CodeGen/X86/shl_undef.ll index 54b74cc..705af5b 100644 --- a/test/CodeGen/X86/shl_undef.ll +++ b/test/CodeGen/X86/shl_undef.ll @@ -1,15 +1,17 @@ -; RUN: llc < %s -O1 -mtriple=i386-apple-darwin | FileCheck %s +; RUN: llc < %s -O1 -mtriple=i386-apple-darwin -x86-asm-syntax=intel | FileCheck %s ; ; Interesting test case where %tmp1220 = xor i32 %tmp862, %tmp592 and ; %tmp1676 = xor i32 %tmp1634, %tmp1530 have zero demanded bits after ; DAGCombiner optimization pass. These are changed to undef and in turn ; the successor shl(s) become shl undef, 1. This pattern then matches -; shl x, 1 -> add x, x. add undef, undef doesn't guarentee the low +; shl x, 1 -> add x, x. add undef, undef doesn't guarantee the low ; order bit is zero and is incorrect. ; ; See rdar://9453156 and rdar://9487392. ; +; Use intel syntax, or "shl" might hit "pushl". + ; CHECK-NOT: shl define i32 @foo(i8* %a0, i32* %a2) nounwind { entry: |