[pkg-d-commits] [ldc] 09/74: Add -fsave-optimization-record option.
Matthias Klumpp
mak at moszumanska.debian.org
Thu Jul 13 20:54:11 UTC 2017
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mak pushed a commit to annotated tag v1.3.0-beta2
in repository ldc.
commit 3fd99eb20753a17360f01249f8b9abc57a02cb21
Author: Johan Engelen <jbc.engelen at gmail.com>
Date: Wed May 3 00:11:59 2017 +0200
Add -fsave-optimization-record option.
Resolves issue #2089
---
driver/cl_options.cpp | 9 ++++++
driver/cl_options.h | 4 +++
driver/codegenerator.cpp | 53 +++++++++++++++++++++++++++++++++
driver/main.cpp | 6 ++++
tests/driver/save_optimization_record.d | 21 +++++++++++++
5 files changed, 93 insertions(+)
diff --git a/driver/cl_options.cpp b/driver/cl_options.cpp
index 9cac488..9f07305 100644
--- a/driver/cl_options.cpp
+++ b/driver/cl_options.cpp
@@ -510,6 +510,15 @@ cl::opt<LTOKind> ltoMode(
"Parallel importing and codegen (faster than 'full')")));
#endif
+#if LDC_LLVM_VER >= 400
+cl::opt<std::string>
+ saveOptimizationRecord("fsave-optimization-record",
+ cl::value_desc("filename"),
+ cl::desc("Generate a YAML optimization record file "
+ "of optimizations performed by LLVM"),
+ cl::ValueOptional);
+#endif
+
static cl::extrahelp footer(
"\n"
"-d-debug can also be specified without options, in which case it enables "
diff --git a/driver/cl_options.h b/driver/cl_options.h
index aa76b0b..2c7826c 100644
--- a/driver/cl_options.h
+++ b/driver/cl_options.h
@@ -118,5 +118,9 @@ inline bool isUsingThinLTO() { return ltoMode == LTO_Thin; }
inline bool isUsingLTO() { return false; }
inline bool isUsingThinLTO() { return false; }
#endif
+
+#if LDC_LLVM_VER >= 400
+extern cl::opt<std::string> saveOptimizationRecord;
+#endif
}
#endif
diff --git a/driver/codegenerator.cpp b/driver/codegenerator.cpp
index 5726ed3..d3e3a26 100644
--- a/driver/codegenerator.cpp
+++ b/driver/codegenerator.cpp
@@ -13,11 +13,16 @@
#include "mars.h"
#include "module.h"
#include "scope.h"
+#include "driver/cl_options.h"
#include "driver/linker.h"
#include "driver/toobj.h"
#include "gen/logger.h"
#include "gen/modules.h"
#include "gen/runtime.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/YAMLTraits.h"
/// The module with the frontend-generated C main() definition.
extern Module *g_entrypointModule;
@@ -27,6 +32,47 @@ extern Module *g_dMainModule;
namespace {
+std::unique_ptr<llvm::tool_output_file>
+createAndSetDiagnosticsOutputFile(IRState &irs, llvm::LLVMContext &ctx,
+ llvm::StringRef filename) {
+ std::unique_ptr<llvm::tool_output_file> diagnosticsOutputFile;
+
+#if LDC_LLVM_VER >= 400
+ // Set LLVM Diagnostics outputfile if requested
+ if (opts::saveOptimizationRecord.getNumOccurrences() > 0) {
+ llvm::SmallString<128> diagnosticsFilename;
+ if (!opts::saveOptimizationRecord.empty()) {
+ diagnosticsFilename = opts::saveOptimizationRecord.getValue();
+ } else {
+ diagnosticsFilename = filename;
+ llvm::sys::path::replace_extension(diagnosticsFilename, "opt.yaml");
+ }
+
+ std::error_code EC;
+ diagnosticsOutputFile = llvm::make_unique<llvm::tool_output_file>(
+ diagnosticsFilename, EC, llvm::sys::fs::F_None);
+ if (EC) {
+ irs.dmodule->error("Could not create file %s: %s",
+ diagnosticsFilename.c_str(), EC.message().c_str());
+ fatal();
+ }
+
+ ctx.setDiagnosticsOutputFile(
+ llvm::make_unique<llvm::yaml::Output>(diagnosticsOutputFile->os()));
+
+ // If there is instrumentation data available, also output function hotness
+ if (!global.params.genInstrProf && global.params.datafileInstrProf)
+ ctx.setDiagnosticHotnessRequested(true);
+ }
+#endif
+
+ return diagnosticsOutputFile;
+}
+
+} // anonymous namespace
+
+namespace {
+
/// Add the linker options metadata flag.
/// If the flag is already present, merge it with the new data.
void emitLinkerOptions(IRState &irs, llvm::Module &M, llvm::LLVMContext &ctx) {
@@ -188,7 +234,14 @@ void CodeGenerator::writeAndFreeLLModule(const char *filename) {
{llvm::MDString::get(ir_->context(), Version)};
IdentMetadata->addOperand(llvm::MDNode::get(ir_->context(), IdentNode));
+ std::unique_ptr<llvm::tool_output_file> diagnosticsOutputFile =
+ createAndSetDiagnosticsOutputFile(*ir_, context_, filename);
+
writeModule(&ir_->module, filename);
+
+ if (diagnosticsOutputFile)
+ diagnosticsOutputFile->keep();
+
delete ir_;
ir_ = nullptr;
}
diff --git a/driver/main.cpp b/driver/main.cpp
index 0efa58f..562dd51 100644
--- a/driver/main.cpp
+++ b/driver/main.cpp
@@ -413,6 +413,12 @@ void parseCommandLine(int argc, char **argv, Strings &sourceFiles,
toWinPaths(global.params.fileImppath);
#endif
+#if LDC_LLVM_VER >= 400
+ if (saveOptimizationRecord.getNumOccurrences() > 0) {
+ global.params.outputSourceLocations = true;
+ }
+#endif
+
// PGO options
#if LDC_WITH_PGO
if (genfileInstrProf.getNumOccurrences() > 0) {
diff --git a/tests/driver/save_optimization_record.d b/tests/driver/save_optimization_record.d
new file mode 100644
index 0000000..2fadd36
--- /dev/null
+++ b/tests/driver/save_optimization_record.d
@@ -0,0 +1,21 @@
+// REQUIRES: atleast_llvm400
+
+// Automatic output filename generation from LL output file
+// RUN: %ldc -c -betterC -O3 -g -fsave-optimization-record -output-ll -of=%t.1.ll %s \
+// RUN: && FileCheck %s --check-prefix=LLVM < %t.1.ll \
+// RUN: && FileCheck %s --check-prefix=YAML < %t.1.opt.yaml
+
+// Explicit filename specified
+// RUN: %ldc -c -betterC -O3 -g -fsave-optimization-record=%t.abcdefg -output-ll -of=%t.ll %s \
+// RUN: && FileCheck %s --check-prefix=LLVM < %t.ll \
+// RUN: && FileCheck %s --check-prefix=YAML < %t.abcdefg
+
+int alwaysInlined(int a) { return a; }
+int foo()
+{
+ // LLVM: 8329424
+ // YAML: File: save_optimization_record.d, Line: [[@LINE+1]]
+ return 8329423 + alwaysInlined(1);
+}
+
+// LLVM: !DILocation(line
--
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