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| author | David Majnemer <david.majnemer@gmail.com> | 2016-06-28 16:04:46 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2016-06-28 16:04:46 +0000 |
| commit | 1c7d532cde3117a21ade6c5501e6bcf87d7555eb (patch) | |
| tree | 5bff15b270436349446e002cf335127911ac1051 /llvm/test/CodeGen/X86 | |
| parent | 5ac8f5c379f6b56d64a11e0c469356ceb3443b4d (diff) | |
| download | bcm5719-llvm-1c7d532cde3117a21ade6c5501e6bcf87d7555eb.tar.gz bcm5719-llvm-1c7d532cde3117a21ade6c5501e6bcf87d7555eb.zip | |
[X86] Make WRPKRU/RDPKRU pass -verify-machineinstrs
The original implementation attempted to zero registers using
XOR %foo, %foo. This is problematic because it constitutes a
read-modify-write of a register which might not be defined.
Instead, use MOV32r0 to avoid these problems; expandPostRAPseudo does
the right thing here.
llvm-svn: 274024
Diffstat (limited to 'llvm/test/CodeGen/X86')
| -rw-r--r-- | llvm/test/CodeGen/X86/pku.ll | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/test/CodeGen/X86/pku.ll b/llvm/test/CodeGen/X86/pku.ll index 8568cf43abc..79b8c474ade 100644 --- a/llvm/test/CodeGen/X86/pku.ll +++ b/llvm/test/CodeGen/X86/pku.ll @@ -1,4 +1,4 @@ -; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=knl --show-mc-encoding| FileCheck %s +; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=knl --show-mc-encoding -verify-machineinstrs | FileCheck %s declare i32 @llvm.x86.rdpkru() declare void @llvm.x86.wrpkru(i32) |
