forked from OSchip/llvm-project
62 lines
3.1 KiB
LLVM
62 lines
3.1 KiB
LLVM
; RUN: opt -lint -disable-output < %s 2>&1 | FileCheck %s
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i1) nounwind argmemonly
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define void @f_memcpy() {
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entry:
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%dst = alloca [1000 x i8], align 2
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%src = alloca [1000 x i8], align 4
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%dst.i8 = bitcast [1000 x i8]* %dst to i8*
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%src.i8 = bitcast [1000 x i8]* %src to i8*
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; CHECK: Undefined behavior: Memory reference address is misaligned
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
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; CHECK: Undefined behavior: Memory reference address is misaligned
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 8 %src.i8, i32 200, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 8 %src.i8, i32 200, i1 false)
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; CHECK-NOT: @llvm.memcpy.p0i8.p0i8.i32
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 2 %src.i8, i32 200, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
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ret void
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}
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declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i1) nounwind argmemonly
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define void @f_memmove() {
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entry:
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%dst = alloca [1000 x i8], align 2
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%src = alloca [1000 x i8], align 4
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%dst.i8 = bitcast [1000 x i8]* %dst to i8*
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%src.i8 = bitcast [1000 x i8]* %src to i8*
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; CHECK: Undefined behavior: Memory reference address is misaligned
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; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* align 4 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
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call void @llvm.memmove.p0i8.p0i8.i32(i8* align 4 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
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; CHECK: Undefined behavior: Memory reference address is misaligned
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; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 8 %src.i8, i32 200, i1 false)
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call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 8 %src.i8, i32 200, i1 false)
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; CHECK-NOT: @llvm.memmove.p0i8.p0i8.i32
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call void @llvm.memmove.p0i8.p0i8.i32(i8* align 1 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
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call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 2 %src.i8, i32 200, i1 false)
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call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
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ret void
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}
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declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i1) nounwind argmemonly
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define void @f_memset() {
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entry:
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%dst = alloca [1000 x i8], align 2
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%dst.i8 = bitcast [1000 x i8]* %dst to i8*
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; CHECK: Undefined behavior: Memory reference address is misaligned
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 4 %dst.i8, i8 55, i32 200, i1 false)
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call void @llvm.memset.p0i8.i32(i8* align 4 %dst.i8, i8 55, i32 200, i1 false)
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; CHECK-NOT: @llvm.memset.p0i8.i32
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call void @llvm.memset.p0i8.i32(i8* align 1 %dst.i8, i8 55, i32 200, i1 false)
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call void @llvm.memset.p0i8.i32(i8* align 2 %dst.i8, i8 55, i32 200, i1 false)
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ret void
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}
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