1 ; RUN: opt -S -memcpyopt < %s | FileCheck %s 2 declare void @may_throw(i32* nocapture %x) 3 4 ; CHECK-LABEL: define void @test1( 5 define void @test1(i32* nocapture noalias dereferenceable(4) %x) { 6 entry: 7 %t = alloca i32, align 4 8 call void @may_throw(i32* nonnull %t) 9 %load = load i32, i32* %t, align 4 10 store i32 %load, i32* %x, align 4 11 ; CHECK: %[[t:.*]] = alloca i32, align 4 12 ; CHECK-NEXT: call void @may_throw(i32* {{.*}} %[[t]]) 13 ; CHECK-NEXT: %[[load:.*]] = load i32, i32* %[[t]], align 4 14 ; CHECK-NEXT: store i32 %[[load]], i32* %x, align 4 15 ret void 16 } 17 18 declare void @always_throws() 19 20 ; CHECK-LABEL: define void @test2( 21 define void @test2(i32* nocapture noalias dereferenceable(4) %x) { 22 entry: 23 %t = alloca i32, align 4 24 call void @may_throw(i32* nonnull %t) nounwind 25 %load = load i32, i32* %t, align 4 26 call void @always_throws() 27 store i32 %load, i32* %x, align 4 28 ; CHECK: %[[t:.*]] = alloca i32, align 4 29 ; CHECK-NEXT: call void @may_throw(i32* {{.*}} %[[t]]) 30 ; CHECK-NEXT: %[[load:.*]] = load i32, i32* %[[t]], align 4 31 ; CHECK-NEXT: call void @always_throws() 32 ; CHECK-NEXT: store i32 %[[load]], i32* %x, align 4 33 ret void 34 } 35
