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[Polly] Don't prune non-external function itself from dump.

This commit is contained in:
Michael Kruse 2021-08-28 16:48:28 -05:00
parent b35e636e40
commit e4f3f2c0c5
2 changed files with 11 additions and 2 deletions
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9
polly/lib/Support/DumpFunctionPass.cpp
View File

@ -43,9 +43,15 @@ static void runDumpFunction(llvm::Function &F, StringRef Suffix) {
return GV == &F; return GV == &F;
}; };
std::unique_ptr<Module> CM = CloneModule(*M, VMap, ShouldCloneDefinition); std::unique_ptr<Module> CM = CloneModule(*M, VMap, ShouldCloneDefinition);
Function *NewF = cast<Function>(VMap.lookup(&F));
assert(NewF && "Expected selected function to be cloned");
LLVM_DEBUG(dbgs() << "Global DCE...\n"); LLVM_DEBUG(dbgs() << "Global DCE...\n");
// Stop F itself from being pruned
GlobalValue::LinkageTypes OrigLinkage = NewF->getLinkage();
NewF->setLinkage(GlobalValue::ExternalLinkage);
{ {
ModuleAnalysisManager MAM; ModuleAnalysisManager MAM;
ModulePassManager MPM; ModulePassManager MPM;
@ -58,6 +64,9 @@ static void runDumpFunction(llvm::Function &F, StringRef Suffix) {
MPM.run(*CM, MAM); MPM.run(*CM, MAM);
} }
// Restore old linkage
NewF->setLinkage(OrigLinkage);
LLVM_DEBUG(dbgs() << "Write to file '" << Dumpfile << "'...\n"); LLVM_DEBUG(dbgs() << "Write to file '" << Dumpfile << "'...\n");
std::unique_ptr<ToolOutputFile> Out; std::unique_ptr<ToolOutputFile> Out;

4
polly/test/Support/dumpfunction.ll
View File

@ -22,7 +22,7 @@
@callee_alias = dso_local unnamed_addr alias void(i32, double*, i32), void(i32, double*, i32 )* @callee @callee_alias = dso_local unnamed_addr alias void(i32, double*, i32), void(i32, double*, i32 )* @callee
define void @callee(i32 %n, double* noalias nonnull %A, i32 %i) { define internal void @callee(i32 %n, double* noalias nonnull %A, i32 %i) {
entry: entry:
br label %for br label %for
@ -49,7 +49,7 @@ return:
} }
define void @caller(i32 %n, double* noalias nonnull %A) { define internal void @caller(i32 %n, double* noalias nonnull %A) {
entry: entry:
br label %for br label %for