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Integrate LLD 6.0.0+ for ELF and Mach-O targets

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LLD 5.0.0+ would work too, but as there's a new lldCommon library for
LLD 6.0.0 (and no more lldConfig), simply require 6.0.0+ to keep the
CMake setup reasonably simple.
This commit is contained in:
Martin 2017-05-29 20:58:48 +02:00
parent 00ba0d9c6d
commit fcbf99d394
3 changed files with 47 additions and 11 deletions
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30
driver/linker-gcc.cpp
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@ -23,6 +23,10 @@
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#if LDC_WITH_LLD && LDC_LLVM_VER >= 600
#include "lld/Common/Driver.h"
#endif
//////////////////////////////////////////////////////////////////////////////
static llvm::cl::opt<std::string>
@ -594,7 +598,7 @@ void ArgsBuilder::addTargetFlags() {
}
//////////////////////////////////////////////////////////////////////////////
// (Yet unused) specialization for plain ld.
// Specialization for plain ld.
class LdArgsBuilder : public ArgsBuilder {
void addSanitizers(const llvm::Triple &triple) override {}
@ -628,6 +632,30 @@ class LdArgsBuilder : public ArgsBuilder {
int linkObjToBinaryGcc(llvm::StringRef outputPath, bool useInternalLinker,
llvm::cl::boolOrDefault fullyStaticFlag) {
#if LDC_WITH_LLD && LDC_LLVM_VER >= 600
if (useInternalLinker) {
LdArgsBuilder argsBuilder;
argsBuilder.build(outputPath, fullyStaticFlag);
const auto fullArgs =
getFullArgs("ld.lld", argsBuilder.args, global.params.verbose);
bool success = false;
if (global.params.targetTriple->isOSBinFormatELF()) {
success = lld::elf::link(fullArgs, /*CanExitEarly*/ false);
} else if (global.params.targetTriple->isOSBinFormatMachO()) {
success = lld::mach_o::link(fullArgs);
} else {
error(Loc(), "unknown target binary format for internal linking");
}
if (!success)
error(Loc(), "linking with LLD failed");
return success ? 0 : 1;
}
#endif
// find gcc for linking
const std::string tool = getGcc();