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memset region to the alignment of the new start address. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81810 91177308-0d34-0410-b5e6-96231b3b80d8
19 lines
545 B
LLVM
19 lines
545 B
LLVM
; RUN: opt < %s -S -memcpyopt | FileCheck %s
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; The resulting memset is only 4-byte aligned, despite containing
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; a 16-byte alignmed store in the middle.
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; CHECK: call void @llvm.memset.i64(i8* %a01, i8 0, i64 16, i32 4)
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define void @foo(i32* %p) {
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%a0 = getelementptr i32* %p, i64 0
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store i32 0, i32* %a0, align 4
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%a1 = getelementptr i32* %p, i64 1
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store i32 0, i32* %a1, align 16
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%a2 = getelementptr i32* %p, i64 2
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store i32 0, i32* %a2, align 4
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%a3 = getelementptr i32* %p, i64 3
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store i32 0, i32* %a3, align 4
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ret void
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}
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