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Attach a DebugLoc to a GC point in order to get precise information in the JIT of a GC point. 

llvm-svn: 114736
This commit is contained in:
Nicolas Geoffray 2010-09-24 17:27:50 +00:00
parent 3aa045491f
commit cbb421887d
2 changed files with 14 additions and 9 deletions
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9
llvm/include/llvm/CodeGen/GCMetadata.h
View File

@ -36,6 +36,7 @@
#include "llvm/Pass.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/DebugLoc.h"
namespace llvm {
class AsmPrinter;
@ -59,8 +60,10 @@ namespace llvm {
struct GCPoint {
GC::PointKind Kind; //< The kind of the safe point.
MCSymbol *Label; //< A label.
DebugLoc Loc;
GCPoint(GC::PointKind K, MCSymbol *L) : Kind(K), Label(L) {}
GCPoint(GC::PointKind K, MCSymbol *L, DebugLoc DL)
: Kind(K), Label(L), Loc(DL) {}
};
/// GCRoot - Metadata for a pointer to an object managed by the garbage
@ -121,8 +124,8 @@ namespace llvm {
/// addSafePoint - Notes the existence of a safe point. Num is the ID of the
/// label just prior to the safe point (if the code generator is using
/// MachineModuleInfo).
void addSafePoint(GC::PointKind Kind, MCSymbol *Label) {
SafePoints.push_back(GCPoint(Kind, Label));
void addSafePoint(GC::PointKind Kind, MCSymbol *Label, DebugLoc DL) {
SafePoints.push_back(GCPoint(Kind, Label, DL));
}
/// getFrameSize/setFrameSize - Records the function's frame size.

14
llvm/lib/CodeGen/GCStrategy.cpp
View File

@ -345,13 +345,15 @@ void MachineCodeAnalysis::VisitCallPoint(MachineBasicBlock::iterator CI) {
MachineBasicBlock::iterator RAI = CI;
++RAI;
if (FI->getStrategy().needsSafePoint(GC::PreCall))
FI->addSafePoint(GC::PreCall, InsertLabel(*CI->getParent(), CI,
CI->getDebugLoc()));
if (FI->getStrategy().needsSafePoint(GC::PreCall)) {
MCSymbol* Label = InsertLabel(*CI->getParent(), CI, CI->getDebugLoc());
FI->addSafePoint(GC::PreCall, Label, CI->getDebugLoc());
}
if (FI->getStrategy().needsSafePoint(GC::PostCall))
FI->addSafePoint(GC::PostCall, InsertLabel(*CI->getParent(), RAI,
CI->getDebugLoc()));
if (FI->getStrategy().needsSafePoint(GC::PostCall)) {
MCSymbol* Label = InsertLabel(*CI->getParent(), RAI, CI->getDebugLoc());
FI->addSafePoint(GC::PostCall, Label, CI->getDebugLoc());
}
}
void MachineCodeAnalysis::FindSafePoints(MachineFunction &MF) {