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[InlineCost]Account for switch instructons when the switch condition could be simplified as a result of inlines.

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Reviewed By: kazu

Differential Revision: https://reviews.llvm.org/D152053
This commit is contained in:
Mingming Liu 2023-06-02 21:33:07 -07:00
parent 9ee65a7618
commit 2639fdc5dd
1 changed files with 3 additions and 0 deletions
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3
llvm/lib/Analysis/InlineCost.cpp
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@ -855,6 +855,9 @@ class InlineCostCallAnalyzer final : public CallAnalyzer {
SimplifiedValues.lookup(BI->getCondition()))) {
CurrentSavings += InstrCost;
}
} else if (SwitchInst *SI = dyn_cast<SwitchInst>(&I)) {
if (isa_and_present<ConstantInt>(SimplifiedValues.lookup(SI->getCondition())))
CurrentSavings += InstrCost;
} else if (Value *V = dyn_cast<Value>(&I)) {
// Count an instruction as savings if we can fold it.
if (SimplifiedValues.count(V)) {