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| author | Evan Cheng <evan.cheng@apple.com> | 2010-03-23 15:48:04 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-03-23 15:48:04 +0000 |
| commit | 0289b419a492c207f2aaaa481c632cdcf33db5f3 (patch) | |
| tree | 4b348b20d3f6f5238ec8df47d9b65b9ea767ab71 /test | |
| parent | 0054c7a867f85f52fdcc11279d696160de92c9f8 (diff) | |
| download | llvm-0289b419a492c207f2aaaa481c632cdcf33db5f3.tar.gz llvm-0289b419a492c207f2aaaa481c632cdcf33db5f3.tar.bz2 llvm-0289b419a492c207f2aaaa481c632cdcf33db5f3.tar.xz | |
Teach simplify libcall to transform __strcpy_chk to __memcpy_chk to enable optimizations down stream.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99282 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/SimplifyLibCalls/StrCpy.ll | 47 |
1 files changed, 27 insertions, 20 deletions
diff --git a/test/Transforms/SimplifyLibCalls/StrCpy.ll b/test/Transforms/SimplifyLibCalls/StrCpy.ll index 75429842cd..c3cc58ce38 100644 --- a/test/Transforms/SimplifyLibCalls/StrCpy.ll +++ b/test/Transforms/SimplifyLibCalls/StrCpy.ll @@ -1,30 +1,37 @@ ; Test that the StrCpyOptimizer works correctly -; RUN: opt < %s -simplify-libcalls -S | \ -; RUN: not grep {call.*strcpy} +; RUN: opt < %s -simplify-libcalls -S | FileCheck %s ; This transformation requires the pointer size, as it assumes that size_t is ; the size of a pointer. -target datalayout = "-p:64:64:64" +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32" -@hello = constant [6 x i8] c"hello\00" ; <[6 x i8]*> [#uses=1] -@null = constant [1 x i8] zeroinitializer ; <[1 x i8]*> [#uses=1] -@null_hello = constant [7 x i8] c"\00hello\00" ; <[7 x i8]*> [#uses=1] +@hello = constant [6 x i8] c"hello\00" declare i8* @strcpy(i8*, i8*) -declare i32 @puts(i8*) - -define i32 @main() { - %target = alloca [1024 x i8] ; <[1024 x i8]*> [#uses=1] - %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0 ; <i8*> [#uses=2] - store i8 0, i8* %arg1 - %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0 ; <i8*> [#uses=1] - %rslt1 = call i8* @strcpy( i8* %arg1, i8* %arg2 ) ; <i8*> [#uses=1] - %arg3 = getelementptr [1 x i8]* @null, i32 0, i32 0 ; <i8*> [#uses=1] - %rslt2 = call i8* @strcpy( i8* %rslt1, i8* %arg3 ) ; <i8*> [#uses=1] - %arg4 = getelementptr [7 x i8]* @null_hello, i32 0, i32 0 ; <i8*> [#uses=1] - %rslt3 = call i8* @strcpy( i8* %rslt2, i8* %arg4 ) ; <i8*> [#uses=1] - call i32 @puts( i8* %rslt3 ) ; <i32>:1 [#uses=0] - ret i32 0 +declare i8* @__strcpy_chk(i8*, i8*, i32) nounwind + +declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly + +; rdar://6839935 + +define i32 @t1() { +; CHECK: @t1 + %target = alloca [1024 x i8] + %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0 + %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0 + %rslt1 = call i8* @strcpy( i8* %arg1, i8* %arg2 ) +; CHECK: @llvm.memcpy.i32 + ret i32 0 } +define i32 @t2() { +; CHECK: @t2 + %target = alloca [1024 x i8] + %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0 + %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0 + %tmp1 = call i32 @llvm.objectsize.i32(i8* %arg1, i1 false) + %rslt1 = call i8* @__strcpy_chk(i8* %arg1, i8* %arg2, i32 %tmp1) +; CHECK: @__memcpy_chk + ret i32 0 +} |