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Name program modules by the entry's file name so profiles match in every checkout (#2462)

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This commit is contained in:
Chris Tate
2026-10-28 06:43:48 -05:00
committed by GitHub
parent 35eda071b2 23d95a99fd
commit 8b27e9cd2f
3 changed files with 22 additions and 3 deletions
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native/llvm-codegen/src/emit.cpp
+11 -2
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@@ -44,6 +44,7 @@
#include "llvm/Support/Caching.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SHA256.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/ThreadPool.h"
@@ -465,6 +466,14 @@ std::optional<EmitFailure> writeRecordedBlocks(const EmitOptions &Options) {
return std::nullopt;
}
// The source file name a program's modules carry: the entry's file name,
// without its directory. Profiles name a module's local functions after it
// ("<name>;<function>"), so a profile collected in one checkout matches the
// builds of every other one.
std::string moduleSourceName(StringRef SourcePath) {
return sys::path::filename(SourcePath).str();
}
// Owns the analysis managers a pipeline needs for one module.
struct Pipeline {
PassInstrumentationCallbacks Callbacks;
@@ -796,7 +805,7 @@ Expected<std::unique_ptr<Module>> loadPartition(const EmitOptions &Options,
return createStringError(inconvertibleErrorCode(), Stream.str());
}
if (!Options.SourcePath.empty())
Mod->setSourceFileName(Options.SourcePath);
Mod->setSourceFileName(moduleSourceName(Options.SourcePath));
Mod->setTargetTriple(Triple(Options.Target));
Mod->setDataLayout(Machine.createDataLayout());
if (std::optional<EmitFailure> Failure = verify(*Mod, "verification_failed"))
@@ -1669,7 +1678,7 @@ int emit(const EmitOptions &Options) {
return reportError("invalid_ir", Stream.str(), Options.DiagnosticFormat);
}
if (!Options.SourcePath.empty())
Mod->setSourceFileName(Options.SourcePath);
Mod->setSourceFileName(moduleSourceName(Options.SourcePath));
std::string LookupError;
std::unique_ptr<TargetMachine> Machine =