| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -tbaa -instcombine -S < %s | FileCheck %s |
| |
| ; Check that load to load forwarding works with non aliasing store inbetween. |
| define i32 @test_load_store_load_combine(i32*, float*) { |
| ; CHECK-LABEL: @test_load_store_load_combine( |
| ; CHECK-NEXT: [[A:%.*]] = load i32, i32* [[TMP0:%.*]], align 4, !tbaa [[TBAA0:![0-9]+]] |
| ; CHECK-NEXT: [[F:%.*]] = sitofp i32 [[A]] to float |
| ; CHECK-NEXT: store float [[F]], float* [[TMP1:%.*]], align 4, !tbaa [[TBAA4:![0-9]+]] |
| ; CHECK-NEXT: ret i32 [[A]] |
| ; |
| %a = load i32, i32* %0, align 4, !tbaa !0 |
| %f = sitofp i32 %a to float |
| store float %f, float* %1, align 4, !tbaa !4 |
| %b = load i32, i32* %0, align 4, !tbaa !0 |
| ret i32 %b |
| } |
| |
| !0 = !{!1, !1, i64 0} |
| !1 = !{!"int", !2, i64 0} |
| !2 = !{!"omnipotent char", !3, i64 0} |
| !3 = !{!"Simple C++ TBAA"} |
| !4 = !{!5, !5, i64 0} |
| !5 = !{!"float", !2, i64 0} |