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-rw-r--r--llvm/lib/Transforms/IPO/Inliner.cpp19
1 files changed, 11 insertions, 8 deletions
diff --git a/llvm/lib/Transforms/IPO/Inliner.cpp b/llvm/lib/Transforms/IPO/Inliner.cpp
index dc9cbfb05e2..29a82189054 100644
--- a/llvm/lib/Transforms/IPO/Inliner.cpp
+++ b/llvm/lib/Transforms/IPO/Inliner.cpp
@@ -201,19 +201,22 @@ static bool InlineCallIfPossible(CallSite CS, InlineFunctionInfo &IFI,
}
unsigned Inliner::getInlineThreshold(CallSite CS) const {
- int thres = InlineThreshold;
+ int thres = InlineThreshold; // -inline-threshold or else selected by
+ // overall opt level
- // Listen to optsize when -inline-limit is not given.
+ // If -inline-threshold is not given, listen to the optsize attribute when it
+ // would decrease the threshold.
Function *Caller = CS.getCaller();
- if (Caller && !Caller->isDeclaration() &&
- Caller->hasFnAttr(Attribute::OptimizeForSize) &&
- InlineLimit.getNumOccurrences() == 0)
+ bool OptSize = Caller && !Caller->isDeclaration() &&
+ Caller->hasFnAttr(Attribute::OptimizeForSize);
+ if (!(InlineLimit.getNumOccurrences() > 0) && OptSize && OptSizeThreshold < thres)
thres = OptSizeThreshold;
- // Listen to inlinehint when it would increase the threshold.
+ // Listen to the inlinehint attribute when it would increase the threshold.
Function *Callee = CS.getCalledFunction();
- if (HintThreshold > thres && Callee && !Callee->isDeclaration() &&
- Callee->hasFnAttr(Attribute::InlineHint))
+ bool InlineHint = Callee && !Callee->isDeclaration() &&
+ Callee->hasFnAttr(Attribute::InlineHint);
+ if (InlineHint && HintThreshold > thres)
thres = HintThreshold;
return thres;
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