forked from OSchip/llvm-project
53 lines
2.0 KiB
LLVM
53 lines
2.0 KiB
LLVM
; Test that the lazy value analysis gets invalidated when its dependencies go
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; away. Sadly, you can neither print nor verify LVI so we just have to require
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; it and check that the pass manager does the right thing.
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;
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; Check basic invalidation.
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; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
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; RUN: -passes='require<lazy-value-info>,invalidate<lazy-value-info>,require<lazy-value-info>' \
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; RUN: | FileCheck %s --check-prefix=CHECK-INVALIDATE
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; CHECK-INVALIDATE: Running pass: RequireAnalysisPass
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; CHECK-INVALIDATE: Running analysis: LazyValueAnalysis
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; CHECK-INVALIDATE: Running pass: InvalidateAnalysisPass
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; CHECK-INVALIDATE: Invalidating analysis: LazyValueAnalysis
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; CHECK-INVALIDATE: Running pass: RequireAnalysisPass
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; CHECK-INVALIDATE: Running analysis: LazyValueAnalysis
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target triple = "x86_64-unknown-linux-gnu"
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@.str = private unnamed_addr constant [8 x i8] c"a = %l\0A\00", align 1
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
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declare void @hoo(i64*)
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declare i32 @printf(i8* nocapture readonly, ...)
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
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define void @goo(i32 %N, i64* %b) {
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entry:
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%a.i = alloca i64, align 8
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%tmp = bitcast i64* %a.i to i8*
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%c = getelementptr inbounds i64, i64* %b, i64 0
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%cmp = icmp slt i32 %i.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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call void @llvm.lifetime.start.p0i8(i64 8, i8* %tmp)
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call void @hoo(i64* %a.i)
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call void @hoo(i64* %c)
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%tmp1 = load volatile i64, i64* %a.i, align 8
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%call.i = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i64 %tmp1)
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call void @llvm.lifetime.end.p0i8(i64 8, i8* %tmp)
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%inc = add nsw i32 %i.0, 1
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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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}
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