1 ; Test that SCEV gets invalidated when one of its dependencies is invalidated. 2 ; 3 ; Each of the RUNs checks that the pass manager runs SCEV, then invalidates it 4 ; due to a dependency being invalidated, and then re-urns it. This will 5 ; directly fail and indicates a failure that would occur later if we ddidn't 6 ; invalidate SCEV in this way. 7 8 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 9 target triple = "x86_64-unknown-linux-gnu" 10 11 ; RUN: opt < %s -passes='require<scalar-evolution>,invalidate<domtree>,print<scalar-evolution>' \ 12 ; RUN: -debug-pass-manager -disable-output 2>&1 \ 13 ; RUN: | FileCheck %s -check-prefixes=CHECK,CHECK-DT-INVALIDATE 14 ; 15 ; CHECK-DT-INVALIDATE: Running pass: RequireAnalysisPass 16 ; CHECK-DT-INVALIDATE: Running analysis: ScalarEvolutionAnalysis 17 ; CHECK-DT-INVALIDATE: Running analysis: DominatorTreeAnalysis 18 ; CHECK-DT-INVALIDATE: Running pass: InvalidateAnalysisPass 19 ; CHECK-DT-INVALIDATE: Invalidating analysis: DominatorTreeAnalysis 20 ; CHECK-DT-INVALIDATE: Running pass: ScalarEvolutionPrinterPass 21 ; CHECK-DT-INVALIDATE: Running analysis: ScalarEvolutionAnalysis 22 ; CHECK-DT-INVALIDATE: Running analysis: DominatorTreeAnalysis 23 24 ; RUN: opt < %s -passes='require<scalar-evolution>,invalidate<loops>,print<scalar-evolution>' \ 25 ; RUN: -debug-pass-manager -disable-output 2>&1 \ 26 ; RUN: | FileCheck %s -check-prefixes=CHECK,CHECK-LI-INVALIDATE 27 ; 28 ; CHECK-LI-INVALIDATE: Running pass: RequireAnalysisPass 29 ; CHECK-LI-INVALIDATE: Running analysis: ScalarEvolutionAnalysis 30 ; CHECK-LI-INVALIDATE: Running analysis: LoopAnalysis 31 ; CHECK-LI-INVALIDATE: Running pass: InvalidateAnalysisPass 32 ; CHECK-LI-INVALIDATE: Invalidating analysis: LoopAnalysis 33 ; CHECK-LI-INVALIDATE: Running pass: ScalarEvolutionPrinterPass 34 ; CHECK-LI-INVALIDATE: Running analysis: ScalarEvolutionAnalysis 35 ; CHECK-LI-INVALIDATE: Running analysis: LoopAnalysis 36 37 ; This test isn't particularly interesting, its just enough to make sure we 38 ; actually do some work inside of SCEV so that if we regress here despite the 39 ; debug pass printing continuing to match, ASan and other tools can catch it. 40 define void @test(i32 %n) { 41 ; CHECK-LABEL: Classifying expressions for: @test 42 ; CHECK: Loop %loop: backedge-taken count is 14 43 ; CHECK: Loop %loop: max backedge-taken count is 14 44 ; CHECK: Loop %loop: Predicated backedge-taken count is 14 45 46 entry: 47 br label %loop 48 49 loop: 50 %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ] 51 %iv.inc = add nsw i32 %iv, 3 52 %becond = icmp ne i32 %iv.inc, 46 53 br i1 %becond, label %loop, label %leave 54 55 leave: 56 ret void 57 } 58
