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| author | Evan Cheng <evan.cheng@apple.com> | 2010-03-05 20:59:47 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-03-05 20:59:47 +0000 |
| commit | a79eb387acbb7ed7eeb4cc8074efd4aeea6d1acd (patch) | |
| tree | e3c74fec259ed55d9387a64d2c10ec7489e63176 /test/Transforms | |
| parent | a862326bc72be147d9f668b84b9187258e690dc4 (diff) | |
| download | external_llvm-a79eb387acbb7ed7eeb4cc8074efd4aeea6d1acd.zip external_llvm-a79eb387acbb7ed7eeb4cc8074efd4aeea6d1acd.tar.gz external_llvm-a79eb387acbb7ed7eeb4cc8074efd4aeea6d1acd.tar.bz2 | |
Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97828 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/SimplifyLibCalls/memset_chk.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyLibCalls/memset_chk.ll b/test/Transforms/SimplifyLibCalls/memset_chk.ll new file mode 100644 index 0000000..c4ef60e --- /dev/null +++ b/test/Transforms/SimplifyLibCalls/memset_chk.ll @@ -0,0 +1,18 @@ +; RUN: opt < %s -simplify-libcalls -S | FileCheck %s +; rdar://7719085 + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" + +%struct.data = type { [100 x i32], [100 x i32], [1024 x i8] } + +define i32 @t() nounwind ssp { +; CHECK: @t +; CHECK: @llvm.memset.i64 +entry: + %0 = alloca %struct.data, align 8 ; <%struct.data*> [#uses=1] + %1 = bitcast %struct.data* %0 to i8* ; <i8*> [#uses=1] + %2 = call i8* @__memset_chk(i8* %1, i32 0, i64 1824, i64 1824) nounwind ; <i8*> [#uses=0] + ret i32 0 +} + +declare i8* @__memset_chk(i8*, i32, i64, i64) nounwind |