llvm/test/Transforms/MemCpyOpt/memcpy-gep-modification.ll

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

%struct.MaskedType = type { i8, i8 }

declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #0
declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #0
declare void @MaskedFunction1(ptr, ptr addrspace(1))
declare void @MaskedFunction2(ptr, ptr)

define i8 @test_gep_not_modified(ptr %in0, ptr %in1) {
; CHECK-LABEL: @test_gep_not_modified(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[FUNCALLOC:%.*]] = alloca [[STRUCT_MASKEDTYPE:%.*]], align 4
; CHECK-NEXT:    [[PTRALLOC:%.*]] = alloca i8, align 1
; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 4, ptr [[PTRALLOC]])
; CHECK-NEXT:    [[ADDRSPACECAST:%.*]] = addrspacecast ptr [[PTRALLOC]] to ptr addrspace(1)
; CHECK-NEXT:    call void @MaskedFunction1(ptr [[IN1:%.*]], ptr addrspace(1) [[ADDRSPACECAST]])
; CHECK-NEXT:    [[LOAD1:%.*]] = load i8, ptr [[PTRALLOC]], align 1
; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 4, ptr [[PTRALLOC]])
; CHECK-NEXT:    [[GETELEMPTR1:%.*]] = getelementptr inbounds [[STRUCT_MASKEDTYPE]], ptr [[FUNCALLOC]], i32 0, i32 1
; CHECK-NEXT:    store i8 [[LOAD1]], ptr [[GETELEMPTR1]], align 1
; CHECK-NEXT:    ret i8 0
;
entry:
  %funcAlloc = alloca %struct.MaskedType, align 4
  %ptrAlloc = alloca i8, align 1
  call void @llvm.lifetime.start.p0(i64 4, ptr %ptrAlloc) #0
  %addrspaceCast = addrspacecast ptr %ptrAlloc to ptr addrspace(1)
  call void @MaskedFunction1(ptr %in1, ptr addrspace(1) %addrspaceCast)
  %load1 = load i8, ptr %ptrAlloc, align 1
  call void @llvm.lifetime.end.p0(i64 4, ptr %ptrAlloc) #0
  %getElemPtr1 = getelementptr inbounds %struct.MaskedType, ptr %funcAlloc, i32 0, i32 1
  store i8 %load1, ptr %getElemPtr1, align 1
  ret i8 0
}

define i8 @test_gep_modified(ptr %in0, ptr %in1) {
; CHECK-LABEL: @test_gep_modified(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[FUNCALLOC:%.*]] = alloca [[STRUCT_MASKEDTYPE:%.*]], align 4
; CHECK-NEXT:    [[PTRALLOC:%.*]] = alloca i8, align 1
; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 4, ptr [[PTRALLOC]])
; CHECK-NEXT:    [[GETELEMPTR1:%.*]] = getelementptr inbounds [[STRUCT_MASKEDTYPE]], ptr [[FUNCALLOC]], i32 0, i32 1
; CHECK-NEXT:    call void @MaskedFunction2(ptr [[IN1:%.*]], ptr [[GETELEMPTR1]])
; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 4, ptr [[PTRALLOC]])
; CHECK-NEXT:    ret i8 0
;
entry:
  %funcAlloc = alloca %struct.MaskedType, align 4
  %ptrAlloc = alloca i8, align 1
  call void @llvm.lifetime.start.p0(i64 4, ptr %ptrAlloc) #0
  call void @MaskedFunction2(ptr %in1, ptr %ptrAlloc)
  %load1 = load i8, ptr %ptrAlloc, align 1
  call void @llvm.lifetime.end.p0(i64 4, ptr %ptrAlloc) #0
  %getElemPtr1 = getelementptr inbounds %struct.MaskedType, ptr %funcAlloc, i32 0, i32 1
  store i8 %load1, ptr %getElemPtr1, align 1
  ret i8 0
}