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Add initial support for variants. This just parses the new format, no 

functionality is added

llvm-svn: 16636
This commit is contained in:
Chris Lattner 2004-10-03 19:34:31 +00:00
parent 42c43b2cb3
commit 91c538f2a1
1 changed files with 12 additions and 1 deletions
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13
llvm/utils/TableGen/CodeGenTarget.cpp
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@ -16,8 +16,14 @@
#include "CodeGenTarget.h"
#include "Record.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
static cl::opt<unsigned>
AsmWriterNum("asmwriternum", cl::init(0),
cl::desc("Make -gen-asm-writer emit assembly writer #N"));
/// getValueType - Return the MCV::ValueType that the specified TableGen record
/// corresponds to.
MVT::ValueType llvm::getValueType(Record *Rec) {
@ -100,7 +106,12 @@ Record *CodeGenTarget::getInstructionSet() const {
/// getAsmWriter - Return the AssemblyWriter definition for this target.
///
Record *CodeGenTarget::getAsmWriter() const {
return TargetRec->getValueAsDef("AssemblyWriter");
ListInit *LI = TargetRec->getValueAsListInit("AssemblyWriters");
if (AsmWriterNum >= LI->getSize())
throw "Target does not have an AsmWriter #" + utostr(AsmWriterNum) + "!";
DefInit *DI = dynamic_cast<DefInit*>(LI->getElement(AsmWriterNum));
if (!DI) throw std::string("AssemblyWriter list should be a list of defs!");
return DI->getDef();
}
void CodeGenTarget::ReadRegisters() const {