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Show stackmap entry encodings in stackmap debug logs. This makes it easier to

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cross-reference debug output with encoded stack-maps, and to create stackmap
test-cases. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195874 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames 2013-11-27 20:10:16 +00:00
parent 839b0556cd
commit 60ffb59df3
1 changed files with 27 additions and 23 deletions
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50
lib/CodeGen/StackMaps.cpp
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@ -251,6 +251,29 @@ void StackMaps::serializeToStackMapSection() {
for (LocationVec::const_iterator LocI = CSLocs.begin(), LocE = CSLocs.end();
LocI != LocE; ++LocI, ++operIdx) {
const Location &Loc = *LocI;
unsigned RegNo = 0;
int Offset = Loc.Offset;
if(Loc.Reg) {
RegNo = MCRI.getDwarfRegNum(Loc.Reg, false);
for (MCSuperRegIterator SR(Loc.Reg, TRI);
SR.isValid() && (int)RegNo < 0; ++SR) {
RegNo = TRI->getDwarfRegNum(*SR, false);
}
// If this is a register location, put the subregister byte offset in
// the location offset.
if (Loc.LocType == Location::Register) {
assert(!Loc.Offset && "Register location should have zero offset");
unsigned LLVMRegNo = MCRI.getLLVMRegNum(RegNo, false);
unsigned SubRegIdx = MCRI.getSubRegIndex(LLVMRegNo, Loc.Reg);
if (SubRegIdx)
Offset = MCRI.getSubRegIdxOffset(SubRegIdx);
}
}
else {
assert(Loc.LocType != Location::Register &&
"Missing location register");
}
DEBUG(
dbgs() << WSMP << " Loc " << operIdx << ": ";
switch (Loc.LocType) {
@ -276,31 +299,12 @@ void StackMaps::serializeToStackMapSection() {
dbgs() << "Constant Index " << Loc.Offset;
break;
}
dbgs() << "\n";
dbgs() << " [encoding: .byte " << Loc.LocType
<< ", .byte " << Loc.Size
<< ", .short " << RegNo
<< ", .int " << Offset << "]\n";
);
unsigned RegNo = 0;
int Offset = Loc.Offset;
if(Loc.Reg) {
RegNo = MCRI.getDwarfRegNum(Loc.Reg, false);
for (MCSuperRegIterator SR(Loc.Reg, TRI);
SR.isValid() && (int)RegNo < 0; ++SR) {
RegNo = TRI->getDwarfRegNum(*SR, false);
}
// If this is a register location, put the subregister byte offset in
// the location offset.
if (Loc.LocType == Location::Register) {
assert(!Loc.Offset && "Register location should have zero offset");
unsigned LLVMRegNo = MCRI.getLLVMRegNum(RegNo, false);
unsigned SubRegIdx = MCRI.getSubRegIndex(LLVMRegNo, Loc.Reg);
if (SubRegIdx)
Offset = MCRI.getSubRegIdxOffset(SubRegIdx);
}
}
else {
assert(Loc.LocType != Location::Register &&
"Missing location register");
}
AP.OutStreamer.EmitIntValue(Loc.LocType, 1);
AP.OutStreamer.EmitIntValue(Loc.Size, 1);
AP.OutStreamer.EmitIntValue(RegNo, 2);