a504f2b8e8
become unavailable. The AssumptionCache is now immutable but it still needs to respond to DomTree invalidation if it ended up caching one. This lets us remove one of the explicit invalidates of LVI but the other one continues to avoid hitting a latent bug. llvm-svn: 292769
65 lines
2.7 KiB
LLVM
65 lines
2.7 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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;
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; Check DomTree specifically.
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; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
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; RUN: -passes='require<domtree>,require<lazy-value-info>,invalidate<domtree>,require<lazy-value-info>' \
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; RUN: | FileCheck %s --check-prefix=CHECK-DT-INVALIDATE
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; CHECK-DT-INVALIDATE: Running pass: RequireAnalysisPass
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; CHECK-DT-INVALIDATE: Running analysis: LazyValueAnalysis
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; CHECK-DT-INVALIDATE: Running pass: InvalidateAnalysisPass
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; CHECK-DT-INVALIDATE: Invalidating analysis: DominatorTreeAnalysis
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; CHECK-DT-INVALIDATE: Invalidating analysis: LazyValueAnalysis
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; CHECK-AC-INVALIDATE: Running pass: RequireAnalysisPass
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; CHECK-DT-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(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(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(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(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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