test/Analysis/BasicAA/invalidation.ll

   1 ; Test that the BasicAA analysis gets invalidated when its dependencies go
   2 ; away.
   3 ;
   4 ; Check DomTree specifically.
   5 ; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
   6 ; RUN:     -passes='require<aa>,invalidate<domtree>,aa-eval' -aa-pipeline='basic-aa' \
   7 ; RUN:     | FileCheck %s --check-prefix=CHECK-DT-INVALIDATE
   8 ; CHECK-DT-INVALIDATE: Running pass: RequireAnalysisPass
   9 ; CHECK-DT-INVALIDATE: Running analysis: BasicAA
  10 ; CHECK-DT-INVALIDATE: Running pass: InvalidateAnalysisPass
  11 ; CHECK-DT-INVALIDATE: Invalidating analysis: DominatorTreeAnalysis
  12 ; CHECK-DT-INVALIDATE: Invalidating analysis: BasicAA
  13 ; CHECK-DT-INVALIDATE: Running pass: AAEvaluator
  14 ; CHECK-DT-INVALIDATE: Running analysis: BasicAA
  15 ;
  16 ; Check LoopInfo specifically.
  17 ; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
  18 ; RUN:     -passes='require<loops>,require<aa>,invalidate<loops>,aa-eval' -aa-pipeline='basic-aa' \
  19 ; RUN:     | FileCheck %s --check-prefix=CHECK-LI-INVALIDATE
  20 ; CHECK-LI-INVALIDATE: Running pass: RequireAnalysisPass
  21 ; CHECK-LI-INVALIDATE: Running analysis: BasicAA
  22 ; CHECK-LI-INVALIDATE: Running pass: InvalidateAnalysisPass
  23 ; CHECK-LI-INVALIDATE: Invalidating analysis: LoopAnalysis
  24 ; CHECK-LI-INVALIDATE: Invalidating analysis: BasicAA
  25 ; CHECK-LI-INVALIDATE: Running pass: AAEvaluator
  26 ; CHECK-LI-INVALIDATE: Running analysis: BasicAA
  27 ;
  28 ; Check PhiValues specifically.
  29 ; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
  30 ; RUN:     -passes='require<phi-values>,require<aa>,invalidate<phi-values>,aa-eval' -aa-pipeline='basic-aa' \
  31 ; RUN:     | FileCheck %s --check-prefix=CHECK-PV-INVALIDATE
  32 ; CHECK-PV-INVALIDATE: Running pass: RequireAnalysisPass
  33 ; CHECK-PV-INVALIDATE: Running analysis: BasicAA
  34 ; CHECK-PV-INVALIDATE: Running pass: InvalidateAnalysisPass
  35 ; CHECK-PV-INVALIDATE: Invalidating analysis: PhiValuesAnalysis
  36 ; CHECK-PV-INVALIDATE: Invalidating analysis: BasicAA
  37 ; CHECK-PV-INVALIDATE: Running pass: AAEvaluator
  38 ; CHECK-PV-INVALIDATE: Running analysis: BasicAA
  39
  40 ; Some code that will result in actual AA queries, including inside of a loop.
  41 ; FIXME: Sadly, none of these queries managed to use either the domtree or
  42 ; loopinfo that basic-aa cache. But nor does any other test in LLVM. It would
  43 ; be good to enhance this to actually use these other analyses to make this
  44 ; a more thorough test.
  45 define void @foo(i1 %x, i8* %p1, i8* %p2) {
  46 entry:
  47   %p3 = alloca i8
  48   store i8 42, i8* %p1
  49   %gep2 = getelementptr i8, i8* %p2, i32 0
  50   br i1 %x, label %loop, label %exit
  51
  52 loop:
  53   store i8 13, i8* %p3
  54   %tmp1 = load i8, i8* %gep2
  55   br label %loop
  56
  57 exit:
  58   ret void
  59 }