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rearrange how the handler in SourceMgr is installed, eliminating the use of

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the cookie argument to setDiagHandler

llvm-svn: 119483
This commit is contained in:
Chris Lattner 2010-11-17 08:03:32 +00:00
parent 003e3db609
commit 2cc6515616
1 changed files with 35 additions and 8 deletions
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43
lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
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@ -34,6 +34,34 @@
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
namespace {
struct SrcMgrDiagInfo {
const MDNode *LocInfo;
void *DiagHandler;
void *DiagContext;
};
}
/// SrcMgrDiagHandler - This callback is invoked when the SourceMgr for an
/// inline asm has an error in it. diagInfo is a pointer to the SrcMgrDiagInfo
/// struct above.
static void SrcMgrDiagHandler(const SMDiagnostic &Diag, void *diagInfo,
unsigned locCookie) {
SrcMgrDiagInfo *DiagInfo = static_cast<SrcMgrDiagInfo *>(diagInfo);
assert(DiagInfo && "Diagnostic context not passed down?");
unsigned LocCookie = 0;
if (const MDNode *LocInfo = DiagInfo->LocInfo)
if (LocInfo->getNumOperands() > 0)
if (const ConstantInt *CI = dyn_cast<ConstantInt>(LocInfo->getOperand(0)))
LocCookie = CI->getZExtValue();
SourceMgr::DiagHandlerTy ChainHandler =
(SourceMgr::DiagHandlerTy)(intptr_t)DiagInfo->DiagHandler;
ChainHandler(Diag, DiagInfo->DiagContext, LocCookie);
}
/// EmitInlineAsm - Emit a blob of inline asm to the output streamer.
void AsmPrinter::EmitInlineAsm(StringRef Str, const MDNode *LocMDNode) const {
assert(!Str.empty() && "Can't emit empty inline asm block");
@ -52,19 +80,18 @@ void AsmPrinter::EmitInlineAsm(StringRef Str, const MDNode *LocMDNode) const {
}
SourceMgr SrcMgr;
SrcMgrDiagInfo DiagInfo;
// If the current LLVMContext has an inline asm handler, set it in SourceMgr.
LLVMContext &LLVMCtx = MMI->getModule()->getContext();
bool HasDiagHandler = false;
if (void *DiagHandler = LLVMCtx.getInlineAsmDiagnosticHandler()) {
unsigned LocCookie = 0;
if (LocMDNode && LocMDNode->getNumOperands() > 0)
if (const ConstantInt *CI =
dyn_cast<ConstantInt>(LocMDNode->getOperand(0)))
LocCookie = CI->getZExtValue();
SrcMgr.setDiagHandler((SourceMgr::DiagHandlerTy)(intptr_t)DiagHandler,
LLVMCtx.getInlineAsmDiagnosticContext(), LocCookie);
// If the source manager has an issue, we arrange for SrcMgrDiagHandler
// to be invoked, getting DiagInfo passed into it.
DiagInfo.LocInfo = LocMDNode;
DiagInfo.DiagHandler = DiagHandler;
DiagInfo.DiagContext = LLVMCtx.getInlineAsmDiagnosticContext();
SrcMgr.setDiagHandler(SrcMgrDiagHandler, &DiagInfo);
HasDiagHandler = true;
}