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At iSel time, update DebugLoc based on debug info attached with an instruction. 

llvm-svn: 82077
This commit is contained in:
Devang Patel 2009-09-16 20:39:11 +00:00
parent 0f64d71d99
commit 852c9b6627
1 changed files with 30 additions and 1 deletions
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31
llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -16,6 +16,7 @@
#include "SelectionDAGBuild.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/ANalysis/DebugInfo.h"
#include "llvm/Constants.h"
#include "llvm/CallingConv.h"
#include "llvm/DerivedTypes.h"
@ -370,12 +371,25 @@ void SelectionDAGISel::SelectBasicBlock(BasicBlock *LLVMBB,
BasicBlock::iterator Begin,
BasicBlock::iterator End) {
SDL->setCurrentBasicBlock(BB);
Metadata &TheMetadata = LLVMBB->getParent()->getContext().getMetadata();
MDKindID MDDbgKind = TheMetadata.getMDKind("dbg");
// Lower all of the non-terminator instructions. If a call is emitted
// as a tail call, cease emitting nodes for this block.
for (BasicBlock::iterator I = Begin; I != End && !SDL->HasTailCall; ++I)
for (BasicBlock::iterator I = Begin; I != End && !SDL->HasTailCall; ++I) {
if (MDDbgKind) {
// Update DebugLoc if debug information is attached with this
// instruction.
if (MDNode *Dbg =
dyn_cast_or_null<MDNode>(TheMetadata.getMD(MDDbgKind, I))) {
DILocation DILoc(Dbg);
DebugLoc Loc = ExtractDebugLocation(DILoc, MF->getDebugLocInfo());
SDL->setCurDebugLoc(Loc);
}
}
if (!isa<TerminatorInst>(I))
SDL->visit(*I);
}
if (!SDL->HasTailCall) {
// Ensure that all instructions which are used outside of their defining
@ -640,6 +654,9 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn,
#endif
);
Metadata &TheMetadata = Fn.getContext().getMetadata();
MDKindID MDDbgKind = TheMetadata.getMDKind("dbg");
// Iterate over all basic blocks in the function.
for (Function::iterator I = Fn.begin(), E = Fn.end(); I != E; ++I) {
BasicBlock *LLVMBB = &*I;
@ -722,6 +739,18 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn,
FastIS->startNewBlock(BB);
// Do FastISel on as many instructions as possible.
for (; BI != End; ++BI) {
if (MDDbgKind) {
// Update DebugLoc if debug information is attached with this
// instruction.
if (MDNode *Dbg =
dyn_cast_or_null<MDNode>(TheMetadata.getMD(MDDbgKind, BI))) {
DILocation DILoc(Dbg);
DebugLoc Loc = ExtractDebugLocation(DILoc,
MF.getDebugLocInfo());
FastIS->setCurDebugLoc(Loc);
}
}
// Just before the terminator instruction, insert instructions to
// feed PHI nodes in successor blocks.
if (isa<TerminatorInst>(BI))