Change createAsmParser to take a MCSubtargetInfo instead of triple,

CPU, and feature string. Parsing some asm directives can change
subtarget state (e.g. .code 16) and it must be reflected in other
modules (e.g. MCCodeEmitter). That is, the MCSubtargetInfo instance
must be shared.

llvm-svn: 134795

1 files changed, 6 insertions, 2 deletions

diff --git a/llvm/tools/llvm-mc/llvm-mc.cpp b/llvm/tools/llvm-mc/llvm-mc.cpp
index 15304fcc095..d73f7e5cf76 100644
--- a/llvm/tools/llvm-mc/llvm-mc.cpp
+++ b/llvm/tools/llvm-mc/llvm-mc.cpp
@@ -19,6 +19,7 @@
 #include "llvm/MC/MCInstPrinter.h"
 #include "llvm/MC/MCSectionMachO.h"
 #include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/SubtargetFeature.h"
 #include "llvm/Target/TargetAsmBackend.h"
 #include "llvm/Target/TargetAsmParser.h"
@@ -340,6 +341,9 @@ static int AssembleInput(const char *ProgName) {
     TM->getTargetLowering()->getObjFileLowering();
   const_cast<TargetLoweringObjectFile&>(TLOF).Initialize(Ctx, *TM);
 
+  OwningPtr<MCSubtargetInfo>
+    STI(TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr));
+
   // FIXME: There is a bit of code duplication with addPassesToEmitFile.
   if (FileType == OFT_AssemblyFile) {
     MCInstPrinter *IP =
@@ -371,8 +375,7 @@ static int AssembleInput(const char *ProgName) {
 
   OwningPtr<MCAsmParser> Parser(createMCAsmParser(*TheTarget, SrcMgr, Ctx,
                                                    *Str.get(), *MAI));
-  OwningPtr<TargetAsmParser>
-    TAP(TheTarget->createAsmParser(TripleName, MCPU, FeaturesStr, *Parser));
+  OwningPtr<TargetAsmParser> TAP(TheTarget->createAsmParser(*STI, *Parser));
   if (!TAP) {
     errs() << ProgName
            << ": error: this target does not support assembly parsing.\n";
@@ -448,6 +451,7 @@ int main(int argc, char **argv) {
   llvm::InitializeAllTargetInfos();
   // FIXME: We shouldn't need to initialize the Target(Machine)s.
   llvm::InitializeAllTargets();
+  llvm::InitializeAllMCSubtargetInfos();
   llvm::InitializeAllAsmPrinters();
   llvm::InitializeAllAsmParsers();
   llvm::InitializeAllDisassemblers();