58 lines
2.5 KiB
LLVM
58 lines
2.5 KiB
LLVM
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; Test that SCEV gets invalidated when one of its dependencies is invalidated.
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;
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; Each of the RUNs checks that the pass manager runs SCEV, then invalidates it
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; due to a dependency being invalidated, and then re-urns it. This will
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; directly fail and indicates a failure that would occur later if we ddidn't
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; invalidate SCEV in this way.
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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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; RUN: opt < %s -passes='require<scalar-evolution>,invalidate<domtree>,print<scalar-evolution>' \
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; RUN: -debug-pass-manager -disable-output 2>&1 \
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; RUN: | FileCheck %s -check-prefixes=CHECK,CHECK-DT-INVALIDATE
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;
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; CHECK-DT-INVALIDATE: Running pass: RequireAnalysisPass
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; CHECK-DT-INVALIDATE: Running analysis: ScalarEvolutionAnalysis
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; CHECK-DT-INVALIDATE: Running analysis: DominatorTreeAnalysis
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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: Running pass: ScalarEvolutionPrinterPass
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; CHECK-DT-INVALIDATE: Running analysis: ScalarEvolutionAnalysis
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; CHECK-DT-INVALIDATE: Running analysis: DominatorTreeAnalysis
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; RUN: opt < %s -passes='require<scalar-evolution>,invalidate<loops>,print<scalar-evolution>' \
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; RUN: -debug-pass-manager -disable-output 2>&1 \
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; RUN: | FileCheck %s -check-prefixes=CHECK,CHECK-LI-INVALIDATE
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;
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; CHECK-LI-INVALIDATE: Running pass: RequireAnalysisPass
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; CHECK-LI-INVALIDATE: Running analysis: ScalarEvolutionAnalysis
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; CHECK-LI-INVALIDATE: Running analysis: LoopAnalysis
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; CHECK-LI-INVALIDATE: Running pass: InvalidateAnalysisPass
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; CHECK-LI-INVALIDATE: Invalidating analysis: LoopAnalysis
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; CHECK-LI-INVALIDATE: Running pass: ScalarEvolutionPrinterPass
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; CHECK-LI-INVALIDATE: Running analysis: ScalarEvolutionAnalysis
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; CHECK-LI-INVALIDATE: Running analysis: LoopAnalysis
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; This test isn't particularly interesting, its just enough to make sure we
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; actually do some work inside of SCEV so that if we regress here despite the
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; debug pass printing continuing to match, ASan and other tools can catch it.
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define void @test(i32 %n) {
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; CHECK-LABEL: Classifying expressions for: @test
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; CHECK: Loop %loop: backedge-taken count is 14
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; CHECK: Loop %loop: max backedge-taken count is 14
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; CHECK: Loop %loop: Predicated backedge-taken count is 14
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]
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%iv.inc = add nsw i32 %iv, 3
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%becond = icmp ne i32 %iv.inc, 46
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br i1 %becond, label %loop, label %leave
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leave:
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ret void
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}
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