| ; RUN: opt -S -gvn-hoist < %s | FileCheck %s |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define void @test1(i1 %b, i32* %x) { |
| entry: |
| br i1 %b, label %if.then, label %if.else |
| |
| if.then: ; preds = %entry |
| store i32 2, i32* %x, align 4, !tbaa !1 |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| store i32 2, i32* %x, align 4, !tbaa !5 |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| ret void |
| } |
| ; CHECK-LABEL: define void @test1( |
| ; CHECK: store i32 2, i32* %x, align 4 |
| ; CHECK-NEXT: br i1 %b |
| |
| define void @test2(i1 %b, i32* %x) { |
| entry: |
| br i1 %b, label %if.then, label %if.else |
| |
| if.then: ; preds = %entry |
| %gep1 = getelementptr inbounds i32, i32* %x, i64 1 |
| store i32 2, i32* %gep1, align 4, !tbaa !1 |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| %gep2 = getelementptr inbounds i32, i32* %x, i64 1 |
| store i32 2, i32* %gep2, align 4, !tbaa !5 |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| ret void |
| } |
| ; CHECK-LABEL: define void @test2( |
| ; CHECK: %[[gep:.*]] = getelementptr inbounds i32, i32* %x, i64 1 |
| ; CHECK: store i32 2, i32* %[[gep]], align 4 |
| ; CHECK-NEXT: br i1 %b |
| |
| define void @test3(i1 %b, i32* %x) { |
| entry: |
| br i1 %b, label %if.then, label %if.else |
| |
| if.then: ; preds = %entry |
| %gep1 = getelementptr inbounds i32, i32* %x, i64 1 |
| store i32 2, i32* %gep1, align 4, !tbaa !1 |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| %gep2 = getelementptr i32, i32* %x, i64 1 |
| store i32 2, i32* %gep2, align 4, !tbaa !5 |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| ret void |
| } |
| ; CHECK-LABEL: define void @test3( |
| ; CHECK: %[[gep:.*]] = getelementptr i32, i32* %x, i64 1 |
| ; CHECK: store i32 2, i32* %[[gep]], align 4 |
| ; CHECK-NEXT: br i1 %b |
| |
| !1 = !{!2, !2, i64 0} |
| !2 = !{!"int", !3, i64 0} |
| !3 = !{!"omnipotent char", !4, i64 0} |
| !4 = !{!"Simple C++ TBAA"} |
| !5 = !{!6, !6, i64 0} |
| !6 = !{!"_ZTS1e", !3, i64 0} |
| |
| define i32 @test4(i1 %b, i32* %y) { |
| entry: |
| br i1 %b, label %if.then, label %if.end |
| |
| if.then: ; preds = %entry |
| %0 = load i32, i32* %y, align 4, !range !7 |
| br label %return |
| |
| if.end: ; preds = %entry |
| %1 = load i32, i32* %y, align 4, !range !8 |
| br label %return |
| |
| return: ; preds = %if.end, %if.then |
| %retval.0 = phi i32 [ %0, %if.then ], [ %1, %if.end ] |
| ret i32 %retval.0 |
| } |
| ; CHECK-LABEL: define i32 @test4( |
| ; CHECK: %[[load:.*]] = load i32, i32* %y, align 4, !range ![[range_md:.*]] |
| ; CHECK: %[[phi:.*]] = phi i32 [ %[[load]], %{{.*}} ], [ %[[load]], %{{.*}} ] |
| ; CHECK: ret i32 %[[phi]] |
| |
| !7 = !{i32 0, i32 2} |
| !8 = !{i32 3, i32 4} |
| ; CHECK: ![[range_md]] = !{i32 0, i32 2, i32 3, i32 4} |
