diff options
author | Evan Cheng <evan.cheng@apple.com> | 2010-04-02 19:36:14 +0000 |
---|---|---|
committer | Evan Cheng <evan.cheng@apple.com> | 2010-04-02 19:36:14 +0000 |
commit | f28f8bc40eedc6304ab25dd8bed486fa08f51f70 (patch) | |
tree | d99c6dd81a1c9d1342237e699bcb3a90e4321680 /test/CodeGen | |
parent | cf5862d8ac9562e633e6ef7cb55e67c2b7ca9c0a (diff) | |
download | llvm-f28f8bc40eedc6304ab25dd8bed486fa08f51f70.tar.gz llvm-f28f8bc40eedc6304ab25dd8bed486fa08f51f70.tar.bz2 llvm-f28f8bc40eedc6304ab25dd8bed486fa08f51f70.tar.xz |
Correctly lower memset / memcpy of undef. It should be a nop. PR6767.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100208 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
-rw-r--r-- | test/CodeGen/X86/memset-2.ll | 8 | ||||
-rw-r--r-- | test/CodeGen/X86/memset-3.ll | 12 |
2 files changed, 15 insertions, 5 deletions
diff --git a/test/CodeGen/X86/memset-2.ll b/test/CodeGen/X86/memset-2.ll index 702632cde9..0e1559548e 100644 --- a/test/CodeGen/X86/memset-2.ll +++ b/test/CodeGen/X86/memset-2.ll @@ -1,13 +1,11 @@ -; RUN: llc < %s | FileCheck %s - -target triple = "i386" +; RUN: llc -mtriple=i386-apple-darwin < %s | FileCheck %s declare void @llvm.memset.i32(i8*, i8, i32, i32) nounwind define fastcc void @t1() nounwind { entry: ; CHECK: t1: -; CHECK: call memset +; CHECK: call _memset call void @llvm.memset.i32( i8* null, i8 0, i32 188, i32 1 ) nounwind unreachable } @@ -15,7 +13,7 @@ entry: define fastcc void @t2(i8 signext %c) nounwind { entry: ; CHECK: t2: -; CHECK: call memset +; CHECK: call _memset call void @llvm.memset.i32( i8* undef, i8 %c, i32 76, i32 1 ) nounwind unreachable } diff --git a/test/CodeGen/X86/memset-3.ll b/test/CodeGen/X86/memset-3.ll new file mode 100644 index 0000000000..9b20ad506a --- /dev/null +++ b/test/CodeGen/X86/memset-3.ll @@ -0,0 +1,12 @@ +; RUN: llc -mtriple=i386-apple-darwin < %s | not grep memset +; PR6767 + +define void @t() nounwind ssp { +entry: + %buf = alloca [512 x i8], align 1 + %ptr = getelementptr inbounds [512 x i8]* %buf, i32 0, i32 0 + call void @llvm.memset.i32(i8* %ptr, i8 undef, i32 512, i32 1) + unreachable +} + +declare void @llvm.memset.i32(i8* nocapture, i8, i32, i32) nounwind |