| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -memcpyopt < %s -verify-memoryssa | FileCheck %s |
| declare void @may_throw(i32* nocapture %x) |
| |
| define void @test1(i32* nocapture noalias dereferenceable(4) %x) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[T:%.*]] = alloca i32, align 4 |
| ; CHECK-NEXT: call void @may_throw(i32* nonnull [[T]]) |
| ; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[T]], align 4 |
| ; CHECK-NEXT: store i32 [[LOAD]], i32* [[X:%.*]], align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %t = alloca i32, align 4 |
| call void @may_throw(i32* nonnull %t) |
| %load = load i32, i32* %t, align 4 |
| store i32 %load, i32* %x, align 4 |
| ret void |
| } |
| |
| declare void @always_throws() |
| |
| define void @test2(i32* nocapture noalias dereferenceable(4) %x) { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[T:%.*]] = alloca i32, align 4 |
| ; CHECK-NEXT: call void @may_throw(i32* nonnull [[T]]) [[ATTR0:#.*]] |
| ; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[T]], align 4 |
| ; CHECK-NEXT: call void @always_throws() |
| ; CHECK-NEXT: store i32 [[LOAD]], i32* [[X:%.*]], align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %t = alloca i32, align 4 |
| call void @may_throw(i32* nonnull %t) nounwind |
| %load = load i32, i32* %t, align 4 |
| call void @always_throws() |
| store i32 %load, i32* %x, align 4 |
| ret void |
| } |