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Teach llvm-lto to respect the given RelocModel. 

Patch by Nick Tomlinson!

llvm-svn: 206177
This commit is contained in:
James Molloy 2014-04-14 13:54:16 +00:00
parent f434c4fa3f
commit 951e529f66
3 changed files with 21 additions and 3 deletions
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3
llvm/include/llvm-c/lto.h
View File

@ -79,7 +79,8 @@ typedef enum {
typedef enum {
LTO_CODEGEN_PIC_MODEL_STATIC = 0,
LTO_CODEGEN_PIC_MODEL_DYNAMIC = 1,
LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC = 2
LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC = 2,
LTO_CODEGEN_PIC_MODEL_DEFAULT = 3
} lto_codegen_model;
/** opaque reference to a loaded object module */

6
llvm/lib/LTO/LTOCodeGenerator.cpp
View File

@ -65,7 +65,7 @@ const char* LTOCodeGenerator::getVersionString() {
LTOCodeGenerator::LTOCodeGenerator()
: Context(getGlobalContext()), Linker(new Module("ld-temp.o", Context)),
TargetMach(NULL), EmitDwarfDebugInfo(false), ScopeRestrictionsDone(false),
CodeModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC), NativeObjectFile(NULL),
CodeModel(LTO_CODEGEN_PIC_MODEL_DEFAULT), NativeObjectFile(NULL),
DiagHandler(NULL), DiagContext(NULL) {
initializeLTOPasses();
}
@ -161,6 +161,7 @@ void LTOCodeGenerator::setCodePICModel(lto_codegen_model model) {
case LTO_CODEGEN_PIC_MODEL_STATIC:
case LTO_CODEGEN_PIC_MODEL_DYNAMIC:
case LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC:
case LTO_CODEGEN_PIC_MODEL_DEFAULT:
CodeModel = model;
return;
}
@ -295,6 +296,9 @@ bool LTOCodeGenerator::determineTarget(std::string &errMsg) {
case LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC:
RelocModel = Reloc::DynamicNoPIC;
break;
case LTO_CODEGEN_PIC_MODEL_DEFAULT:
// RelocModel is already the default, so leave it that way.
break;
}
// construct LTOModule, hand over ownership of module and target

15
llvm/tools/llvm-lto/llvm-lto.cpp
View File

@ -83,7 +83,20 @@ int main(int argc, char **argv) {
LTOCodeGenerator CodeGen;
CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC);
switch (RelocModel) {
case Reloc::Static:
CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_STATIC);
break;
case Reloc::PIC_:
CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC);
break;
case Reloc::DynamicNoPIC:
CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC);
break;
default:
CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DEFAULT);
}
CodeGen.setDebugInfo(LTO_DEBUG_MODEL_DWARF);
CodeGen.setTargetOptions(Options);