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9e81c3bdb2
Remove the command line argument "struct-path-tbaa" since we should not depend on command line argument to decide which format the IR file is using. Instead, we check the first operand of the tbaa tag node, if it is a MDNode, we treat it as struct-path aware TBAA format, otherwise, we treat it as scalar TBAA format. When clang starts to use struct-path aware TBAA format no matter whether struct-path-tbaa is no, and we can auto-upgrade existing bc files, the support for scalar TBAA format can be dropped. Existing testing cases are updated to use the struct-path aware TBAA format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191538 91177308-0d34-0410-b5e6-96231b3b80d8
121 lines
3.0 KiB
LLVM
121 lines
3.0 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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define void @test1(i32* %P) {
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store i32 undef, i32* %P
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store i32 123, i32* undef
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store i32 124, i32* null
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ret void
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: store i32 123, i32* undef
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; CHECK-NEXT: store i32 undef, i32* null
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; CHECK-NEXT: ret void
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}
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define void @test2(i32* %P) {
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%X = load i32* %P ; <i32> [#uses=1]
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%Y = add i32 %X, 0 ; <i32> [#uses=1]
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store i32 %Y, i32* %P
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ret void
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: ret void
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}
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;; Simple sinking tests
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; "if then else"
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define i32 @test3(i1 %C) {
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%A = alloca i32
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br i1 %C, label %Cond, label %Cond2
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Cond:
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store i32 -987654321, i32* %A
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br label %Cont
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Cond2:
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store i32 47, i32* %A
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br label %Cont
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Cont:
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%V = load i32* %A
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ret i32 %V
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; CHECK-LABEL: @test3(
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; CHECK-NOT: alloca
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; CHECK: Cont:
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; CHECK-NEXT: %storemerge = phi i32 [ 47, %Cond2 ], [ -987654321, %Cond ]
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; CHECK-NEXT: ret i32 %storemerge
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}
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; "if then"
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define i32 @test4(i1 %C) {
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%A = alloca i32
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store i32 47, i32* %A
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br i1 %C, label %Cond, label %Cont
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Cond:
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store i32 -987654321, i32* %A
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br label %Cont
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Cont:
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%V = load i32* %A
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ret i32 %V
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; CHECK-LABEL: @test4(
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; CHECK-NOT: alloca
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; CHECK: Cont:
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; CHECK-NEXT: %storemerge = phi i32 [ -987654321, %Cond ], [ 47, %0 ]
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; CHECK-NEXT: ret i32 %storemerge
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}
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; "if then"
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define void @test5(i1 %C, i32* %P) {
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store i32 47, i32* %P, align 1
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br i1 %C, label %Cond, label %Cont
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Cond:
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store i32 -987654321, i32* %P, align 1
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br label %Cont
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Cont:
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ret void
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; CHECK-LABEL: @test5(
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; CHECK: Cont:
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; CHECK-NEXT: %storemerge = phi i32
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; CHECK-NEXT: store i32 %storemerge, i32* %P, align 1
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; CHECK-NEXT: ret void
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}
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; PR14753 - merging two stores should preserve the TBAA tag.
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define void @test6(i32 %n, float* %a, i32* %gi) nounwind uwtable ssp {
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entry:
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store i32 42, i32* %gi, align 4, !tbaa !0
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%storemerge = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%0 = load i32* %gi, align 4, !tbaa !0
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%cmp = icmp slt i32 %0, %n
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%idxprom = sext i32 %0 to i64
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%arrayidx = getelementptr inbounds float* %a, i64 %idxprom
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store float 0.000000e+00, float* %arrayidx, align 4, !tbaa !3
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%1 = load i32* %gi, align 4, !tbaa !0
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%inc = add nsw i32 %1, 1
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store i32 %inc, i32* %gi, align 4, !tbaa !0
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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; CHECK-LABEL: @test6(
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; CHECK: for.cond:
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; CHECK-NEXT: phi i32 [ 42
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; CHECK-NEXT: store i32 %storemerge, i32* %gi, align 4, !tbaa !0
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}
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!0 = metadata !{metadata !4, metadata !4, i64 0}
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!1 = metadata !{metadata !"omnipotent char", metadata !2}
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!2 = metadata !{metadata !"Simple C/C++ TBAA"}
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!3 = metadata !{metadata !"float", metadata !1}
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!4 = metadata !{metadata !"int", metadata !1}
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