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Repair debug frames as a prelude to eh_frames. Switched to using MachineMoves

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by value so that clean up is less confusing (these vectors tend to be small.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33488 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2007-01-24 18:45:13 +00:00
parent 7cce0ac42b
commit 5e73d5bd2e
8 changed files with 84 additions and 38 deletions
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43
lib/CodeGen/DwarfWriter.cpp
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@ -2112,16 +2112,25 @@ private:
/// EmitFrameMoves - Emit frame instructions to describe the layout of the
/// frame.
void EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
std::vector<MachineMove *> &Moves) {
std::vector<MachineMove> &Moves) {
int stackGrowth =
Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
TargetFrameInfo::StackGrowsUp ?
TAI->getAddressSize() : -TAI->getAddressSize();
for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
MachineMove *Move = Moves[i];
unsigned LabelID = DebugInfo->MappedLabel(Move->getLabelID());
MachineMove &Move = Moves[i];
unsigned LabelID = Move.getLabelID();
// Throw out move if the label is invalid.
if (!LabelID) continue;
if (LabelID) {
LabelID = DebugInfo->MappedLabel(LabelID);
const MachineLocation &Dst = Move->getDestination();
const MachineLocation &Src = Move->getSource();
// Throw out move if the label is invalid.
if (!LabelID) continue;
}
const MachineLocation &Dst = Move.getDestination();
const MachineLocation &Src = Move.getSource();
// Advance row if new location.
if (BaseLabel && LabelID && BaseLabelID != LabelID) {
@ -2134,11 +2143,6 @@ private:
BaseLabel = "loc";
}
int stackGrowth =
Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
TargetFrameInfo::StackGrowsUp ?
TAI->getAddressSize() : -TAI->getAddressSize();
// If advancing cfa.
if (Dst.isRegister() && Dst.getRegister() == MachineLocation::VirtualFP) {
if (!Src.isRegister()) {
@ -2159,6 +2163,16 @@ private:
} else {
assert(0 && "Machine move no supported yet.");
}
} else if (Src.isRegister() &&
Src.getRegister() == MachineLocation::VirtualFP) {
if (Dst.isRegister()) {
EmitInt8(DW_CFA_def_cfa_register);
EOL("DW_CFA_def_cfa_register");
EmitULEB128Bytes(RI->getDwarfRegNum(Dst.getRegister()));
EOL("Register");
} else {
assert(0 && "Machine move no supported yet.");
}
} else {
unsigned Reg = RI->getDwarfRegNum(Src.getRegister());
int Offset = Dst.getOffset() / stackGrowth;
@ -2433,10 +2447,9 @@ private:
EmitSLEB128Bytes(stackGrowth); EOL("CIE Data Alignment Factor");
EmitInt8(RI->getDwarfRegNum(RI->getRARegister())); EOL("CIE RA Column");
std::vector<MachineMove *> Moves;
std::vector<MachineMove> Moves;
RI->getInitialFrameState(Moves);
EmitFrameMoves(NULL, 0, Moves);
for (unsigned i = 0, N = Moves.size(); i < N; ++i) delete Moves[i];
Asm->EmitAlignment(2);
EmitLabel("frame_common_end", 0);
@ -2467,7 +2480,7 @@ private:
"func_begin", SubprogramCount);
EOL("FDE address range");
std::vector<MachineMove *> &Moves = DebugInfo->getFrameMoves();
std::vector<MachineMove> &Moves = DebugInfo->getFrameMoves();
EmitFrameMoves("func_begin", SubprogramCount, Moves);