[MC/Mach-O] Implement integrated assembler support for linker options.
- Also, fixup syntax errors in LangRef and missing newline in the MCAsmStreamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172837 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 76c2546..1170bf2 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -406,14 +406,14 @@
// MachO
//===----------------------------------------------------------------------===//
-/// emitModuleFlags - Emit the module flags that specify the garbage collection
-/// information.
+/// emitModuleFlags - Perform code emission for module flags.
void TargetLoweringObjectFileMachO::
emitModuleFlags(MCStreamer &Streamer,
ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
Mangler *Mang, const TargetMachine &TM) const {
unsigned VersionVal = 0;
unsigned ImageInfoFlags = 0;
+ MDNode *LinkerOptions = 0;
StringRef SectionVal;
for (ArrayRef<Module::ModuleFlagEntry>::iterator
@@ -427,14 +427,33 @@
StringRef Key = MFE.Key->getString();
Value *Val = MFE.Val;
- if (Key == "Objective-C Image Info Version")
+ if (Key == "Objective-C Image Info Version") {
VersionVal = cast<ConstantInt>(Val)->getZExtValue();
- else if (Key == "Objective-C Garbage Collection" ||
- Key == "Objective-C GC Only" ||
- Key == "Objective-C Is Simulated")
+ } else if (Key == "Objective-C Garbage Collection" ||
+ Key == "Objective-C GC Only" ||
+ Key == "Objective-C Is Simulated") {
ImageInfoFlags |= cast<ConstantInt>(Val)->getZExtValue();
- else if (Key == "Objective-C Image Info Section")
+ } else if (Key == "Objective-C Image Info Section") {
SectionVal = cast<MDString>(Val)->getString();
+ } else if (Key == "Linker Options") {
+ LinkerOptions = cast<MDNode>(Val);
+ }
+ }
+
+ // Emit the linker options if present.
+ if (LinkerOptions) {
+ for (unsigned i = 0, e = LinkerOptions->getNumOperands(); i != e; ++i) {
+ MDNode *MDOptions = cast<MDNode>(LinkerOptions->getOperand(i));
+ SmallVector<std::string, 4> StrOptions;
+
+ // Convert to strings.
+ for (unsigned ii = 0, ie = MDOptions->getNumOperands(); ii != ie; ++ii) {
+ MDString *MDOption = cast<MDString>(MDOptions->getOperand(ii));
+ StrOptions.push_back(MDOption->getString());
+ }
+
+ Streamer.EmitLinkerOptions(StrOptions);
+ }
}
// The section is mandatory. If we don't have it, then we don't have GC info.