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