From c13c9e5a9d288eac494a38f0710d34446167f940 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Mon, 30 Sep 2013 16:39:19 +0000
Subject: Move command line options to the users of libLTO. Fixes
 --enable-shared build.

Patch by Richard Sandiford.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191680 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llvm-lto/llvm-lto.cpp | 57 ++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 48 insertions(+), 9 deletions(-)

(limited to 'tools/llvm-lto/llvm-lto.cpp')

diff --git a/tools/llvm-lto/llvm-lto.cpp b/tools/llvm-lto/llvm-lto.cpp
index 82a2c8288f..2f51c0c3d0 100644
--- a/tools/llvm-lto/llvm-lto.cpp
+++ b/tools/llvm-lto/llvm-lto.cpp
@@ -12,6 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/CodeGen/CommandFlags.h"
 #include "llvm/LTO/LTOCodeGenerator.h"
 #include "llvm/LTO/LTOModule.h"
 #include "llvm/Support/CommandLine.h"
@@ -23,13 +24,26 @@
 
 using namespace llvm;
 
-static cl::list<std::string> InputFilenames(cl::Positional, cl::OneOrMore,
-                                            cl::desc("<input bitcode files>"));
+static cl::opt<bool>
+DisableOpt("disable-opt", cl::init(false),
+  cl::desc("Do not run any optimization passes"));
 
-static cl::opt<std::string> OutputFilename("o",
-                                           cl::desc("Override output filename"),
-                                           cl::init(""),
-                                           cl::value_desc("filename"));
+static cl::opt<bool>
+DisableInline("disable-inlining", cl::init(false),
+  cl::desc("Do not run the inliner pass"));
+
+static cl::opt<bool>
+DisableGVNLoadPRE("disable-gvn-loadpre", cl::init(false),
+  cl::desc("Do not run the GVN load PRE pass"));
+
+static cl::list<std::string>
+InputFilenames(cl::Positional, cl::OneOrMore,
+  cl::desc("<input bitcode files>"));
+
+static cl::opt<std::string>
+OutputFilename("o", cl::init(""),
+  cl::desc("Override output filename"),
+  cl::value_desc("filename"));
 
 int main(int argc, char **argv) {
   // Print a stack trace if we signal out.
@@ -45,6 +59,28 @@ int main(int argc, char **argv) {
   InitializeAllAsmPrinters();
   InitializeAllAsmParsers();
 
+  // set up the TargetOptions for the machine
+  TargetOptions Options;
+  Options.LessPreciseFPMADOption = EnableFPMAD;
+  Options.NoFramePointerElim = DisableFPElim;
+  Options.AllowFPOpFusion = FuseFPOps;
+  Options.UnsafeFPMath = EnableUnsafeFPMath;
+  Options.NoInfsFPMath = EnableNoInfsFPMath;
+  Options.NoNaNsFPMath = EnableNoNaNsFPMath;
+  Options.HonorSignDependentRoundingFPMathOption =
+    EnableHonorSignDependentRoundingFPMath;
+  Options.UseSoftFloat = GenerateSoftFloatCalls;
+  if (FloatABIForCalls != FloatABI::Default)
+    Options.FloatABIType = FloatABIForCalls;
+  Options.NoZerosInBSS = DontPlaceZerosInBSS;
+  Options.GuaranteedTailCallOpt = EnableGuaranteedTailCallOpt;
+  Options.DisableTailCalls = DisableTailCalls;
+  Options.StackAlignmentOverride = OverrideStackAlignment;
+  Options.TrapFuncName = TrapFuncName;
+  Options.PositionIndependentExecutable = EnablePIE;
+  Options.EnableSegmentedStacks = SegmentedStacks;
+  Options.UseInitArray = UseInitArray;
+
   unsigned BaseArg = 0;
   std::string ErrorMessage;
 
@@ -52,11 +88,12 @@ int main(int argc, char **argv) {
 
   CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC);
   CodeGen.setDebugInfo(LTO_DEBUG_MODEL_DWARF);
+  CodeGen.setTargetOptions(Options);
 
   for (unsigned i = BaseArg; i < InputFilenames.size(); ++i) {
     std::string error;
     OwningPtr<LTOModule> Module(LTOModule::makeLTOModule(InputFilenames[i].c_str(),
-                                                         error));
+                                                         Options, error));
     if (!error.empty()) {
       errs() << argv[0] << ": error loading file '" << InputFilenames[i]
              << "': " << error << "\n";
@@ -74,7 +111,8 @@ int main(int argc, char **argv) {
   if (!OutputFilename.empty()) {
     size_t len = 0;
     std::string ErrorInfo;
-    const void *Code = CodeGen.compile(&len, ErrorInfo);
+    const void *Code = CodeGen.compile(&len, DisableOpt, DisableInline,
+                                       DisableGVNLoadPRE, ErrorInfo);
     if (Code == NULL) {
       errs() << argv[0]
              << ": error compiling the code: " << ErrorInfo << "\n";
@@ -92,7 +130,8 @@ int main(int argc, char **argv) {
   } else {
     std::string ErrorInfo;
     const char *OutputName = NULL;
-    if (!CodeGen.compile_to_file(&OutputName, ErrorInfo)) {
+    if (!CodeGen.compile_to_file(&OutputName, DisableOpt, DisableInline,
+                                 DisableGVNLoadPRE, ErrorInfo)) {
       errs() << argv[0]
              << ": error compiling the code: " << ErrorInfo
              << "\n";
-- 
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