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Diffstat (limited to 'test/Transforms/MemCpyOpt/align.ll')
-rw-r--r-- | test/Transforms/MemCpyOpt/align.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/MemCpyOpt/align.ll b/test/Transforms/MemCpyOpt/align.ll new file mode 100644 index 000000000000..a9d03378521f --- /dev/null +++ b/test/Transforms/MemCpyOpt/align.ll @@ -0,0 +1,18 @@ +; RUN: opt < %s -S -memcpyopt | FileCheck %s + +; The resulting memset is only 4-byte aligned, despite containing +; a 16-byte alignmed store in the middle. + +; CHECK: call void @llvm.memset.i64(i8* %a01, i8 0, i64 16, i32 4) + +define void @foo(i32* %p) { + %a0 = getelementptr i32* %p, i64 0 + store i32 0, i32* %a0, align 4 + %a1 = getelementptr i32* %p, i64 1 + store i32 0, i32* %a1, align 16 + %a2 = getelementptr i32* %p, i64 2 + store i32 0, i32* %a2, align 4 + %a3 = getelementptr i32* %p, i64 3 + store i32 0, i32* %a3, align 4 + ret void +} |