mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
38686bdffd
and use it in one place in inline asm handling stuff. Before
we'd generate this for an invalid modifier letter:
$ clang asm.c -c -o t.o
fatal error: error in backend: Invalid operand found in inline asm: 'abc incl ${0:Z}'
INLINEASM <es:abc incl ${0:Z}>, 10, %EAX<def>, 2147483657, %EAX, 14, %EFLAGS<earlyclobber,def,dead>, <!-1>
Now we generate this:
$ clang asm.c -c -o t.o
error: invalid operand in inline asm: 'incl ${0:Z}'
asm.c:3:12: note: generated from here
__asm__ ("incl %Z0" : "+r" (X));
^
1 error generated.
This is much better but still admittedly not great ("why" is the operand
invalid??), codegen should try harder with its diagnostics :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100723 91177308-0d34-0410-b5e6-96231b3b80d8
131 lines
4.3 KiB
C++
131 lines
4.3 KiB
C++
//===-- LLVMContext.cpp - Implement LLVMContext -----------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements LLVMContext, as a wrapper around the opaque
|
|
// class LLVMContextImpl.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/LLVMContext.h"
|
|
#include "llvm/Metadata.h"
|
|
#include "llvm/Constants.h"
|
|
#include "llvm/Instruction.h"
|
|
#include "llvm/Support/ManagedStatic.h"
|
|
#include "llvm/Support/SourceMgr.h"
|
|
#include "LLVMContextImpl.h"
|
|
using namespace llvm;
|
|
|
|
static ManagedStatic<LLVMContext> GlobalContext;
|
|
|
|
LLVMContext& llvm::getGlobalContext() {
|
|
return *GlobalContext;
|
|
}
|
|
|
|
LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) {
|
|
// Create the first metadata kind, which is always 'dbg'.
|
|
unsigned DbgID = getMDKindID("dbg");
|
|
assert(DbgID == MD_dbg && "dbg kind id drifted"); (void)DbgID;
|
|
}
|
|
LLVMContext::~LLVMContext() { delete pImpl; }
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Recoverable Backend Errors
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void LLVMContext::setInlineAsmDiagnosticHandler(void *DiagHandler,
|
|
void *DiagContext) {
|
|
pImpl->InlineAsmDiagHandler = DiagHandler;
|
|
pImpl->InlineAsmDiagContext = DiagContext;
|
|
}
|
|
|
|
/// getInlineAsmDiagnosticHandler - Return the diagnostic handler set by
|
|
/// setInlineAsmDiagnosticHandler.
|
|
void *LLVMContext::getInlineAsmDiagnosticHandler() const {
|
|
return pImpl->InlineAsmDiagHandler;
|
|
}
|
|
|
|
/// getInlineAsmDiagnosticContext - Return the diagnostic context set by
|
|
/// setInlineAsmDiagnosticHandler.
|
|
void *LLVMContext::getInlineAsmDiagnosticContext() const {
|
|
return pImpl->InlineAsmDiagContext;
|
|
}
|
|
|
|
void LLVMContext::emitError(StringRef ErrorStr) {
|
|
emitError(0U, ErrorStr);
|
|
}
|
|
|
|
void LLVMContext::emitError(const Instruction *I, StringRef ErrorStr) {
|
|
unsigned LocCookie = 0;
|
|
if (const MDNode *SrcLoc = I->getMetadata("srcloc")) {
|
|
if (SrcLoc->getNumOperands() != 0)
|
|
if (const ConstantInt *CI = dyn_cast<ConstantInt>(SrcLoc->getOperand(0)))
|
|
LocCookie = CI->getZExtValue();
|
|
}
|
|
return emitError(LocCookie, ErrorStr);
|
|
}
|
|
|
|
void LLVMContext::emitError(unsigned LocCookie, StringRef ErrorStr) {
|
|
// If there is no error handler installed, just print the error and exit.
|
|
if (pImpl->InlineAsmDiagHandler == 0) {
|
|
errs() << "error: " << ErrorStr << "\n";
|
|
exit(1);
|
|
}
|
|
|
|
// If we do have an error handler, we can report the error and keep going.
|
|
SMDiagnostic Diag("", "error: " + ErrorStr.str());
|
|
|
|
((SourceMgr::DiagHandlerTy)(intptr_t)pImpl->InlineAsmDiagHandler)
|
|
(Diag, pImpl->InlineAsmDiagContext, LocCookie);
|
|
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Metadata Kind Uniquing
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef NDEBUG
|
|
/// isValidName - Return true if Name is a valid custom metadata handler name.
|
|
static bool isValidName(StringRef MDName) {
|
|
if (MDName.empty())
|
|
return false;
|
|
|
|
if (!isalpha(MDName[0]))
|
|
return false;
|
|
|
|
for (StringRef::iterator I = MDName.begin() + 1, E = MDName.end(); I != E;
|
|
++I) {
|
|
if (!isalnum(*I) && *I != '_' && *I != '-' && *I != '.')
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
/// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
|
|
unsigned LLVMContext::getMDKindID(StringRef Name) const {
|
|
assert(isValidName(Name) && "Invalid MDNode name");
|
|
|
|
unsigned &Entry = pImpl->CustomMDKindNames[Name];
|
|
|
|
// If this is new, assign it its ID.
|
|
if (Entry == 0) Entry = pImpl->CustomMDKindNames.size();
|
|
return Entry;
|
|
}
|
|
|
|
/// getHandlerNames - Populate client supplied smallvector using custome
|
|
/// metadata name and ID.
|
|
void LLVMContext::getMDKindNames(SmallVectorImpl<StringRef> &Names) const {
|
|
Names.resize(pImpl->CustomMDKindNames.size()+1);
|
|
Names[0] = "";
|
|
for (StringMap<unsigned>::const_iterator I = pImpl->CustomMDKindNames.begin(),
|
|
E = pImpl->CustomMDKindNames.end(); I != E; ++I)
|
|
// MD Handlers are numbered from 1.
|
|
Names[I->second] = I->first();
|
|
}
|