53 lines
1.5 KiB
LLVM
53 lines
1.5 KiB
LLVM
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; Basic test to check that DominatorTreeAnalysis is preserved by IPSCCP and
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; the following analysis can re-use it. The test contains two trivial functions
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; IPSCCP can simplify, so we can test the case where IPSCCP makes changes.
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; RUN: opt -disable-verify -debug-pass-manager \
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; RUN: -passes='function(require<domtree>,require<postdomtree>),ipsccp,function(require<domtree>,require<postdomtree>)' -S %s 2>&1 \
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; RUN: | FileCheck -check-prefixes='IR,NEW-PM' %s
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; RUN: opt -passes='function(require<postdomtree>),ipsccp,function(verify<domtree>)' -S %s | FileCheck -check-prefixes='IR' %s
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; NEW-PM: Starting llvm::Module pass manager run.
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; NEW-PM: Running analysis: DominatorTreeAnalysis on f1
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; NEW-PM: Running analysis: PostDominatorTreeAnalysis on f1
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; NEW-PM: Running analysis: DominatorTreeAnalysis on f2
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; NEW-PM: Running analysis: PostDominatorTreeAnalysis on f2
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; NEW-PM: Running pass: IPSCCPPass
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; NEW-PM-DAG: Running analysis: AssumptionAnalysis on f1
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; NEW-PM-DAG: Running analysis: AssumptionAnalysis on f2
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; NEW-PM-NOT: Running analysis:
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; IR-LABEL: @f1
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; IR-LABEL: entry:
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; IR-NEXT: br label %bb2
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; IR-LABEL: bb2:
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; IR-NEXT: undef
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; IR-LABEL: @f2
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; IR-NOT: icmp
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; IR: br label %bbtrue
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; IR-LABEL: bbtrue:
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; IR-NEXT: ret i32 0
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define internal i32 @f1() readnone {
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entry:
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br i1 false, label %bb1, label %bb2
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bb1:
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ret i32 10
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bb2:
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ret i32 10
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}
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define i32 @f2(i32 %n) {
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%i = call i32 @f1()
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%cmp = icmp eq i32 %i, 10
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br i1 %cmp, label %bbtrue, label %bbfalse
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bbtrue:
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ret i32 0
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bbfalse:
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%res = add i32 %n, %i
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ret i32 %res
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}
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