| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s |
| ; PR10067 |
| ; Make sure the call+copy isn't optimized in such a way that |
| ; %ret ends up with the wrong value. |
| |
| target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32" |
| target triple = "i386-apple-darwin10" |
| |
| %struct1 = type { i32, i32 } |
| %struct2 = type { %struct1, ptr } |
| |
| declare void @bar(ptr nocapture sret(%struct1) %agg.result) nounwind |
| |
| define i32 @foo() nounwind { |
| ; CHECK-LABEL: @foo( |
| ; CHECK-NEXT: [[X:%.*]] = alloca [[STRUCT1:%.*]], align 8 |
| ; CHECK-NEXT: [[Y:%.*]] = alloca [[STRUCT2:%.*]], align 8 |
| ; CHECK-NEXT: call void @bar(ptr sret(%struct1) [[X]]) [[ATTR0:#.*]] |
| ; CHECK-NEXT: store i32 0, ptr [[Y]], align 8 |
| ; CHECK-NEXT: [[GEPN2:%.*]] = getelementptr inbounds [[STRUCT2]], ptr [[Y]], i32 0, i32 0, i32 1 |
| ; CHECK-NEXT: store i32 0, ptr [[GEPN2]], align 4 |
| ; CHECK-NEXT: [[LOAD:%.*]] = load i64, ptr [[X]], align 8 |
| ; CHECK-NEXT: store i64 [[LOAD]], ptr [[Y]], align 8 |
| ; CHECK-NEXT: [[RET:%.*]] = load i32, ptr [[Y]], align 4 |
| ; CHECK-NEXT: ret i32 [[RET]] |
| ; |
| %x = alloca %struct1, align 8 |
| %y = alloca %struct2, align 8 |
| call void @bar(ptr sret(%struct1) %x) nounwind |
| |
| store i32 0, ptr %y, align 8 |
| %gepn2 = getelementptr inbounds %struct2, ptr %y, i32 0, i32 0, i32 1 |
| store i32 0, ptr %gepn2, align 4 |
| |
| %load = load i64, ptr %x, align 8 |
| store i64 %load, ptr %y, align 8 |
| |
| |
| %ret = load i32, ptr %y |
| ret i32 %ret |
| } |
