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Emit stub debug info for generated functions to work around LLVM bug 2172.

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This commit is contained in:
Christian Kamm
2008-10-12 14:38:55 +02:00
parent c2f17bda87
commit b413b9aa54
3 changed files with 103 additions and 2 deletions
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50
gen/toobj.cpp
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@@ -449,6 +449,12 @@ void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath, ch
/* ================================================================== */
// the following code generates functions and needs to output
// debug info. these macros are useful for that
#define DBG_TYPE ( getPtrToType(llvm::StructType::get(NULL,NULL)) )
#define DBG_CAST(X) ( llvm::ConstantExpr::getBitCast(X, DBG_TYPE) )
// build module ctor
llvm::Function* build_module_ctor()
@@ -473,12 +479,23 @@ llvm::Function* build_module_ctor()
llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn);
IRBuilder<> builder(bb);
// debug info
LLGlobalVariable* subprog;
if(global.params.symdebug) {
subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str());
builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog));
}
for (size_t i=0; i<n; i++) {
llvm::Function* f = gIR->ctors[i]->ir.irFunc->func;
llvm::CallInst* call = builder.CreateCall(f,"");
call->setCallingConv(llvm::CallingConv::Fast);
}
// debug info end
if(global.params.symdebug)
builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog));
builder.CreateRetVoid();
return fn;
}
@@ -507,12 +524,23 @@ static llvm::Function* build_module_dtor()
llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn);
IRBuilder<> builder(bb);
// debug info
LLGlobalVariable* subprog;
if(global.params.symdebug) {
subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str());
builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog));
}
for (size_t i=0; i<n; i++) {
llvm::Function* f = gIR->dtors[i]->ir.irFunc->func;
llvm::CallInst* call = builder.CreateCall(f,"");
call->setCallingConv(llvm::CallingConv::Fast);
}
// debug info end
if(global.params.symdebug)
builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog));
builder.CreateRetVoid();
return fn;
}
@@ -541,12 +569,23 @@ static llvm::Function* build_module_unittest()
llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn);
IRBuilder<> builder(bb);
// debug info
LLGlobalVariable* subprog;
if(global.params.symdebug) {
subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str());
builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog));
}
for (size_t i=0; i<n; i++) {
llvm::Function* f = gIR->unitTests[i]->ir.irFunc->func;
llvm::CallInst* call = builder.CreateCall(f,"");
call->setCallingConv(llvm::CallingConv::Fast);
}
// debug info end
if(global.params.symdebug)
builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog));
builder.CreateRetVoid();
return fn;
}
@@ -587,6 +626,13 @@ static LLFunction* build_module_reference_and_ctor(LLConstant* moduleinfo)
llvm::BasicBlock* bb = llvm::BasicBlock::Create("moduleinfoCtorEntry", ctor);
IRBuilder<> builder(bb);
// debug info
LLGlobalVariable* subprog;
if(global.params.symdebug) {
subprog = DtoDwarfSubProgramInternal(fname.c_str(), fname.c_str());
builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog));
}
// get current beginning
LLValue* curbeg = builder.CreateLoad(mref, "current");
@@ -597,6 +643,10 @@ static LLFunction* build_module_reference_and_ctor(LLConstant* moduleinfo)
// replace beginning
builder.CreateStore(thismref, mref);
// debug info end
if(global.params.symdebug)
builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog));
// return
builder.CreateRetVoid();