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[ThinLTO] Port InlinerFunctionImportStats handling to new PM

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Summary:
The InlinerFunctionImportStats will collect and dump stats regarding how
many function inlined into the module were imported by ThinLTO.

Reviewers: wmi, dexonsmith

Subscribers: mehdi_amini, inglorion, llvm-commits, eraman

Differential Revision: https://reviews.llvm.org/D48729

llvm-svn: 335914
This commit is contained in:
Teresa Johnson 2018-06-28 20:07:47 +00:00
parent 74ec48e91c
commit 54c43692b3
3 changed files with 28 additions and 0 deletions
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5
include/llvm/Transforms/IPO/Inliner.h
View File

@ -96,12 +96,17 @@ class InlinerPass : public PassInfoMixin<InlinerPass> {
public:
InlinerPass(InlineParams Params = getInlineParams())
: Params(std::move(Params)) {}
~InlinerPass();
InlinerPass(InlinerPass &&Arg)
: Params(std::move(Arg.Params)),
ImportedFunctionsStats(std::move(Arg.ImportedFunctionsStats)) {}
PreservedAnalyses run(LazyCallGraph::SCC &C, CGSCCAnalysisManager &AM,
LazyCallGraph &CG, CGSCCUpdateResult &UR);
private:
InlineParams Params;
std::unique_ptr<ImportedFunctionsInliningStatistics> ImportedFunctionsStats;
};
} // end namespace llvm

18
lib/Transforms/IPO/Inliner.cpp
View File

@ -793,6 +793,14 @@ bool LegacyInlinerBase::removeDeadFunctions(CallGraph &CG,
return true;
}
InlinerPass::~InlinerPass() {
if (ImportedFunctionsStats) {
assert(InlinerFunctionImportStats != InlinerFunctionImportStatsOpts::No);
ImportedFunctionsStats->dump(InlinerFunctionImportStats ==
InlinerFunctionImportStatsOpts::Verbose);
}
}
PreservedAnalyses InlinerPass::run(LazyCallGraph::SCC &InitialC,
CGSCCAnalysisManager &AM, LazyCallGraph &CG,
CGSCCUpdateResult &UR) {
@ -804,6 +812,13 @@ PreservedAnalyses InlinerPass::run(LazyCallGraph::SCC &InitialC,
Module &M = *InitialC.begin()->getFunction().getParent();
ProfileSummaryInfo *PSI = MAM.getCachedResult<ProfileSummaryAnalysis>(M);
if (!ImportedFunctionsStats &&
InlinerFunctionImportStats != InlinerFunctionImportStatsOpts::No) {
ImportedFunctionsStats =
llvm::make_unique<ImportedFunctionsInliningStatistics>();
ImportedFunctionsStats->setModuleInfo(M);
}
// We use a single common worklist for calls across the entire SCC. We
// process these in-order and append new calls introduced during inlining to
// the end.
@ -1009,6 +1024,9 @@ PreservedAnalyses InlinerPass::run(LazyCallGraph::SCC &InitialC,
Calls.push_back({CS, NewHistoryID});
}
if (InlinerFunctionImportStats != InlinerFunctionImportStatsOpts::No)
ImportedFunctionsStats->recordInline(F, Callee);
// Merge the attributes based on the inlining.
AttributeFuncs::mergeAttributesForInlining(F, Callee);

5
test/Transforms/Inline/inline_stats.ll
View File

@ -1,6 +1,11 @@
; First with legacy PM
; RUN: opt -S -inline -inliner-function-import-stats=basic < %s 2>&1 | FileCheck %s -check-prefix=CHECK-BASIC -check-prefix=CHECK
; RUN: opt -S -inline -inliner-function-import-stats=verbose < %s 2>&1 | FileCheck %s -check-prefix="CHECK-VERBOSE" -check-prefix=CHECK
; Do again with new PM
; RUN: opt -S -passes=inline -inliner-function-import-stats=basic < %s 2>&1 | FileCheck %s -check-prefix=CHECK-BASIC -check-prefix=CHECK
; RUN: opt -S -passes=inline -inliner-function-import-stats=verbose < %s 2>&1 | FileCheck %s -check-prefix="CHECK-VERBOSE" -check-prefix=CHECK
; CHECK: ------- Dumping inliner stats for [<stdin>] -------
; CHECK-BASIC-NOT: -- List of inlined functions:
; CHECK-BASIC-NOT: -- Inlined not imported function