third_party/llvm-7.0/llvm/test/Analysis/Lint/memintrin.ll

; RUN: opt -lint -disable-output < %s 2>&1 | FileCheck %s

declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i1) nounwind argmemonly

define void @f_memcpy() {
entry:
  %dst = alloca [1000 x i8], align 2
  %src = alloca [1000 x i8], align 4
  %dst.i8 = bitcast [1000 x i8]* %dst to i8*
  %src.i8 = bitcast [1000 x i8]* %src to i8*
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 8 %src.i8, i32 200, i1 false)
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 8 %src.i8, i32 200, i1 false)
; CHECK-NOT: @llvm.memcpy.p0i8.p0i8.i32
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 2 %src.i8, i32 200, i1 false)
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)

  ret void
}

declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i1) nounwind argmemonly

define void @f_memmove() {
entry:
  %dst = alloca [1000 x i8], align 2
  %src = alloca [1000 x i8], align 4
  %dst.i8 = bitcast [1000 x i8]* %dst to i8*
  %src.i8 = bitcast [1000 x i8]* %src to i8*
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* align 4 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
  call void @llvm.memmove.p0i8.p0i8.i32(i8* align 4 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 8 %src.i8, i32 200, i1 false)
  call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 8 %src.i8, i32 200, i1 false)
; CHECK-NOT: @llvm.memmove.p0i8.p0i8.i32
  call void @llvm.memmove.p0i8.p0i8.i32(i8* align 1 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)
  call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 2 %src.i8, i32 200, i1 false)
  call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 %dst.i8, i8* align 4 %src.i8, i32 200, i1 false)

  ret void
}

declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i1) nounwind argmemonly

define void @f_memset() {
entry:
  %dst = alloca [1000 x i8], align 2
  %dst.i8 = bitcast [1000 x i8]* %dst to i8*
; CHECK: Undefined behavior: Memory reference address is misaligned
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 4 %dst.i8, i8 55, i32 200, i1 false)
  call void @llvm.memset.p0i8.i32(i8* align 4 %dst.i8, i8 55, i32 200, i1 false)
; CHECK-NOT: @llvm.memset.p0i8.i32
  call void @llvm.memset.p0i8.i32(i8* align 1 %dst.i8, i8 55, i32 200, i1 false)
  call void @llvm.memset.p0i8.i32(i8* align 2 %dst.i8, i8 55, i32 200, i1 false)

  ret void
}