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[Inliner] Add another way to compute full inline cost.

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Summary:
Full inline cost is computed when -inline-cost-full is true or ORE is
non-null. This patch adds another way to compute full inline cost by
adding a field to InlineParams. This will be used by SampleProfileLoader
to check legality of inlining a callee that it wants to inline.

Reviewers: danielcdh, haicheng

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D37819

llvm-svn: 313185
This commit is contained in:
Easwaran Raman 2017-09-13 20:16:02 +00:00
parent a8474917f4
commit 4279926ae3
2 changed files with 8 additions and 5 deletions
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3
include/llvm/Analysis/InlineCost.h
View File

@ -152,6 +152,9 @@ struct InlineParams {
/// Threshold to use when the callsite is considered cold.
Optional<int> ColdCallSiteThreshold;
/// Compute inline cost even when the cost has exceeded the threshold.
Optional<bool> ComputeFullInlineCost;
};
/// Generate the parameters to tune the inline cost analysis based only on the

10
lib/Analysis/InlineCost.cpp
View File

@ -82,7 +82,7 @@ static cl::opt<int> HotCallSiteRelFreq(
"entry frequency, for a callsite to be hot in the absence of "
"profile information."));
static cl::opt<bool> ComputeFullInlineCost(
static cl::opt<bool> OptComputeFullInlineCost(
"inline-cost-full", cl::Hidden, cl::init(false),
cl::desc("Compute the full inline cost of a call site even when the cost "
"exceeds the threshold."));
@ -124,6 +124,7 @@ class CallAnalyzer : public InstVisitor<CallAnalyzer, bool> {
int Threshold;
int Cost;
bool ComputeFullInlineCost;
bool IsCallerRecursive;
bool IsRecursiveCall;
@ -256,7 +257,9 @@ public:
: TTI(TTI), GetAssumptionCache(GetAssumptionCache), GetBFI(GetBFI),
PSI(PSI), F(Callee), DL(F.getParent()->getDataLayout()), ORE(ORE),
CandidateCS(CSArg), Params(Params), Threshold(Params.DefaultThreshold),
Cost(0), IsCallerRecursive(false), IsRecursiveCall(false),
Cost(0), ComputeFullInlineCost(OptComputeFullInlineCost ||
Params.ComputeFullInlineCost || ORE),
IsCallerRecursive(false), IsRecursiveCall(false),
ExposesReturnsTwice(false), HasDynamicAlloca(false),
ContainsNoDuplicateCall(false), HasReturn(false), HasIndirectBr(false),
HasFrameEscape(false), AllocatedSize(0), NumInstructions(0),
@ -1722,9 +1725,6 @@ InlineCost llvm::getInlineCost(
CS.isNoInline())
return llvm::InlineCost::getNever();
if (ORE)
ComputeFullInlineCost = true;
DEBUG(llvm::dbgs() << " Analyzing call of " << Callee->getName()
<< "... (caller:" << Caller->getName() << ")\n");