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fa2e854de5
cover domtree and alias analysis. These are the pretty clear analyses that we would always want to survive this pass. To make these survive, we also need to preserve the assumption cache. Added a test that verifies the important bits of this preservation. llvm-svn: 292037
34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
LLVM
; This is really testing that instcombine preserves analyses correctly, so we
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; don't care much about the code other than it is something instcombine can
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; transform.
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;
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; RUN: opt < %s -disable-output -debug-pass-manager 2>&1 -aa-pipeline=basic-aa,globals-aa \
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; RUN: -passes='require<globals-aa>,function(require<aa>,instcombine),function(require<aa>)' \
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; RUN: | FileCheck %s --check-prefix=AA
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; AA: Running analysis: GlobalsAA
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; AA: Running analysis: AAManager
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; AA: Running analysis: BasicAA
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; AA: Running pass: InstCombinePass on test
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; AA-NOT: Invalidating analysis: GlobalsAA
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; AA-NOT: Invalidating analysis: AAmanager
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; AA-NOT: Invalidating analysis: BasicAA
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; AA: Running pass: RequireAnalysisPass<{{.*}}AAManager
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; AA-NOT: Running analysis: GlobalsAA
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; AA-NOT: Running analysis: AAmanager
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; AA-NOT: Running analysis: BasicAA
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;
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; RUN: opt < %s -disable-output -debug-pass-manager 2>&1 \
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; RUN: -passes='require<domtree>,instcombine,require<domtree>' \
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; RUN: | FileCheck %s --check-prefix=DT
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; DT: Running analysis: DominatorTreeAnalysis
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; DT: Running pass: InstCombinePass on test
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; DT-NOT: Invalidating analysis: DominatorTreeAnalysis
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; DT: Running pass: RequireAnalysisPass<{{.*}}DominatorTreeAnalysis
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; DT-NOT: Running analysis: DominatorTreeAnalysis
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define i32 @test(i32 %A) {
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%B = add i32 %A, 5
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%C = add i32 %B, -5
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ret i32 %C
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}
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