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Make it possible to set the cpu used for codegen.

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llvm-svn: 110759
This commit is contained in:
Rafael Espindola 2010-08-11 00:15:13 +00:00
parent 603e66618f
commit f345661269
5 changed files with 29 additions and 1 deletions
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7
include/llvm-c/lto.h
View File

@ -205,6 +205,13 @@ extern bool
lto_codegen_set_pic_model(lto_code_gen_t cg, lto_codegen_model);
/**
* Sets the cpu to generate code for.
*/
extern void
lto_codegen_set_cpu(lto_code_gen_t cg, const char *cpu);
/**
* Sets the location of the "gcc" to run. If not set, libLTO will search for
* "gcc" on the path.

6
tools/gold/gold-plugin.cpp
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@ -70,6 +70,7 @@ namespace options {
static std::vector<std::string> pass_through;
static std::string extra_library_path;
static std::string triple;
static std::string mcpu;
// Additional options to pass into the code generator.
// Note: This array will contain all plugin options which are not claimed
// as plugin exclusive to pass to the code generator.
@ -85,6 +86,8 @@ namespace options {
if (opt == "generate-api-file") {
generate_api_file = true;
} else if (opt.startswith("mcpu=")) {
mcpu = opt.substr(strlen("mcpu="));
} else if (opt.startswith("as=")) {
if (!as_path.empty()) {
(*message)(LDPL_WARNING, "Path to as specified twice. "
@ -413,6 +416,9 @@ static ld_plugin_status all_symbols_read_hook(void) {
}
lto_codegen_set_assembler_args(cg, &as_args_p[0], as_args_p.size());
}
if (!options::mcpu.empty())
lto_codegen_set_cpu(cg, options::mcpu.c_str());
// Pass through extra options to the code generator.
if (!options::extra.empty()) {
for (std::vector<std::string>::iterator it = options::extra.begin();

7
tools/lto/LTOCodeGenerator.cpp
View File

@ -119,6 +119,11 @@ bool LTOCodeGenerator::setCodePICModel(lto_codegen_model model,
return true;
}
void LTOCodeGenerator::setCpu(const char* mCpu)
{
_mCpu = mCpu;
}
void LTOCodeGenerator::setAssemblerPath(const char* path)
{
if ( _assemblerPath )
@ -314,7 +319,7 @@ bool LTOCodeGenerator::determineTarget(std::string& errMsg)
// construct LTModule, hand over ownership of module and target
SubtargetFeatures Features;
Features.getDefaultSubtargetFeatures("" /* cpu */, llvm::Triple(Triple));
Features.getDefaultSubtargetFeatures(_mCpu, llvm::Triple(Triple));
std::string FeatureStr = Features.getString();
_target = march->createTargetMachine(Triple, FeatureStr);
}

2
tools/lto/LTOCodeGenerator.h
View File

@ -36,6 +36,7 @@ struct LTOCodeGenerator {
bool addModule(struct LTOModule*, std::string& errMsg);
bool setDebugInfo(lto_debug_model, std::string& errMsg);
bool setCodePICModel(lto_codegen_model, std::string& errMsg);
void setCpu(const char *cpu);
void setAssemblerPath(const char* path);
void setAssemblerArgs(const char** args, int nargs);
void addMustPreserveSymbol(const char* sym);
@ -63,6 +64,7 @@ private:
llvm::MemoryBuffer* _nativeObjectFile;
std::vector<const char*> _codegenOptions;
llvm::sys::Path* _assemblerPath;
std::string _mCpu;
std::vector<std::string> _assemblerArgs;
};

8
tools/lto/lto.cpp
View File

@ -210,6 +210,14 @@ bool lto_codegen_set_pic_model(lto_code_gen_t cg, lto_codegen_model model)
return cg->setCodePICModel(model, sLastErrorString);
}
//
// sets the cpu to generate code for
//
void lto_codegen_set_cpu(lto_code_gen_t cg, const char* cpu)
{
return cg->setCpu(cpu);
}
//
// sets the path to the assembler tool
//