llvm/test/Transforms/MemCpyOpt/pr102994.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -passes=memcpyopt < %s | FileCheck %s

@g1 = external global i8
@g2 = external global [64 x i8]
@g3 = global i8 0, align 1

define void @func() {
; CHECK-LABEL: define void @func() {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr getelementptr inbounds (i8, ptr @g2, i64 16), ptr getelementptr inbounds nuw (i8, ptr @g2, i64 16), i64 20, i1 false)
; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr @g1, ptr getelementptr inbounds (i8, ptr @g2, i64 24), i64 1, i1 false)
; CHECK-NEXT:    ret void
;
entry:
  call void @llvm.memcpy.p0.p0.i64(ptr getelementptr inbounds (i8, ptr @g2, i64 16), ptr getelementptr inbounds nuw (i8, ptr @g2, i64 16), i64 20, i1 false)
  call void @llvm.memcpy.p0.p0.i64(ptr @g1, ptr getelementptr inbounds (i8, ptr @g2, i64 24), i64 1, i1 false)
  ret void
}

define void @func2(ptr %p) {
; CHECK-LABEL: define void @func2(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr i8, ptr [[P]], i64 32
; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr i8, ptr [[P]], i64 34
; CHECK-NEXT:    [[GEP3:%.*]] = getelementptr i8, ptr [[P]], i64 32
; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr [[GEP1]], ptr [[GEP3]], i64 32, i1 false)
; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr @g3, ptr [[GEP2]], i64 1, i1 false)
; CHECK-NEXT:    ret void
;
entry:
  %gep1 = getelementptr i8, ptr %p, i64 32
  %gep2 = getelementptr i8, ptr %p, i64 34
  %gep3 = getelementptr i8, ptr %p, i64 32
  call void @llvm.memcpy.p0.p0.i64(ptr %gep1, ptr %gep3, i64 32, i1 false)
  call void @llvm.memcpy.p0.p0.i64(ptr @g3, ptr %gep2, i64 1, i1 false)
  ret void
}