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Simplify. No intentional functionality change. 

llvm-svn: 74673
This commit is contained in:
Devang Patel 2009-07-02 00:08:09 +00:00
parent 1554825e20
commit 846a5e4d3e
1 changed files with 36 additions and 49 deletions
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85
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
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@ -3960,62 +3960,49 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
unsigned Line = Subprogram.getLineNumber();
MachineFunction &MF = DAG.getMachineFunction();
if (OptLevel == CodeGenOpt::None) {
// llvm.dbg.func.start implicitly defines a dbg_stoppoint which is what
// (most?) gdb expects.
// If this subprogram does not describe current function then this is
// beginning of a inlined function.
bool isInlinedFnStart = !Subprogram.describes(MF.getFunction());
if (isInlinedFnStart && OptLevel != CodeGenOpt::None)
// FIXME: Debugging informaation for inlined function is only
// supported at CodeGenOpt::Node.
return 0;
if (isInlinedFnStart && OptLevel == CodeGenOpt::None) {
// This is a beginning of an inlined function.
DebugLoc PrevLoc = CurDebugLoc;
// If llvm.dbg.func.start is seen in a new block before any
// llvm.dbg.stoppoint intrinsic then the location info is unknown.
// FIXME : Why DebugLoc is reset at the beginning of each block ?
if (PrevLoc.isUnknown())
return 0;
if (!Subprogram.describes(MF.getFunction())) {
// This is a beginning of an inlined function.
// If llvm.dbg.func.start is seen in a new block before any
// llvm.dbg.stoppoint intrinsic then the location info is unknown.
// FIXME : Why DebugLoc is reset at the beginning of each block ?
if (PrevLoc.isUnknown())
return 0;
// Record the source line.
setCurDebugLoc(DebugLoc::get(
MF.getOrCreateDebugLocID(CompileUnit.getGV(), Line, 0)));
if (DW && DW->ShouldEmitDwarfDebug()) {
DebugLocTuple PrevLocTpl = MF.getDebugLocTuple(PrevLoc);
unsigned LabelID = DW->RecordInlinedFnStart(Subprogram,
DICompileUnit(PrevLocTpl.CompileUnit),
PrevLocTpl.Line,
PrevLocTpl.Col);
// Record the source line.
unsigned LocID = MF.getOrCreateDebugLocID(CompileUnit.getGV(), Line, 0);
setCurDebugLoc(DebugLoc::get(LocID));
if (DW && DW->ShouldEmitDwarfDebug()) {
DebugLocTuple PrevLocTpl = MF.getDebugLocTuple(PrevLoc);
unsigned LabelID = DW->RecordInlinedFnStart(Subprogram,
DICompileUnit(PrevLocTpl.CompileUnit),
PrevLocTpl.Line,
PrevLocTpl.Col);
DAG.setRoot(DAG.getLabel(ISD::DBG_LABEL, getCurDebugLoc(),
getRoot(), LabelID));
}
} else {
// Record the source line.
unsigned Line = Subprogram.getLineNumber();
MF.setDefaultDebugLoc(DebugLoc::get(
MF.getOrCreateDebugLocID(CompileUnit.getGV(), Line, 0)));
if (DW && DW->ShouldEmitDwarfDebug()) {
// llvm.dbg.func_start also defines beginning of function scope.
DW->RecordRegionStart(cast<GlobalVariable>(FSI.getSubprogram()));
}
}
} else {
std::string SPName;
Subprogram.getLinkageName(SPName);
if (!SPName.empty()
&& strcmp(SPName.c_str(), MF.getFunction()->getNameStart())) {
// This is beginning of inlined function. Debugging information for
// inlined function is not handled yet (only supported by FastISel).
return 0;
}
// Record the source line but does not create a label for the normal
// function start. It will be emitted at asm emission time. However,
// create a label if this is a beginning of inlined function.
setCurDebugLoc(DebugLoc::get(
MF.getOrCreateDebugLocID(CompileUnit.getGV(), Line, 0)));
// FIXME - Start new region because llvm.dbg.func_start also defines
// beginning of function scope.
return 0;
}
// This is a beginning of a new function.
// Record the source line.
unsigned LocID = MF.getOrCreateDebugLocID(CompileUnit.getGV(), Line, 0);
MF.setDefaultDebugLoc(DebugLoc::get(LocID));
if (DW && DW->ShouldEmitDwarfDebug())
// llvm.dbg.func_start also defines beginning of function scope.
DW->RecordRegionStart(cast<GlobalVariable>(FSI.getSubprogram()));
return 0;
}
case Intrinsic::dbg_declare: {