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