Progress towards shepherding debug info through SelectionDAG.
No functional effect yet. This is still evolving and should
not be viewed as final.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98195 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index 625de11..e6ad363 100644
--- a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -508,6 +508,7 @@
return;
if (!sd)
return;
+ assert(sd->getKind() == SDDbgValue::SD);
unsigned VReg = getVR(SDValue(sd->getSDNode(), sd->getResNo()), VRBaseMap);
const TargetInstrDesc &II = TII->get(TargetOpcode::DBG_VALUE);
DebugLoc DL = sd->getDebugLoc();
@@ -524,26 +525,46 @@
MBB->insert(InsertPos, MI);
}
-/// EmitDbgValue - Generate constant debug info. No SDNode is involved.
+/// EmitDbgValue - Generate debug info that does not refer to a SDNode.
void
-InstrEmitter::EmitDbgValue(SDDbgValue *sd) {
+InstrEmitter::EmitDbgValue(SDDbgValue *sd,
+ DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM) {
if (!sd)
return;
const TargetInstrDesc &II = TII->get(TargetOpcode::DBG_VALUE);
+ uint64_t Offset = sd->getOffset();
+ MDNode* mdPtr = sd->getMDPtr();
+ SDDbgValue::DbgValueKind kind = sd->getKind();
DebugLoc DL = sd->getDebugLoc();
- MachineInstr *MI;
- Value *V = sd->getConst();
- if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
- MI = BuildMI(*MF, DL, II).addImm(CI->getZExtValue()).
- addImm(sd->getOffset()).
- addMetadata(sd->getMDPtr());
- } else if (ConstantFP *CF = dyn_cast<ConstantFP>(V)) {
- MI = BuildMI(*MF, DL, II).addFPImm(CF).addImm(sd->getOffset()).
- addMetadata(sd->getMDPtr());
+ MachineInstr* MI;
+ if (kind == SDDbgValue::CNST) {
+ Value *V = sd->getConst();
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
+ MI = BuildMI(*MF, DL, II).addImm(CI->getZExtValue()).
+ addImm(Offset).addMetadata(mdPtr);
+ } else if (ConstantFP *CF = dyn_cast<ConstantFP>(V)) {
+ MI = BuildMI(*MF, DL, II).addFPImm(CF).
+ addImm(Offset).addMetadata(mdPtr);
+ } else {
+ // Could be an Undef. In any case insert an Undef so we can see what we
+ // dropped.
+ MI = BuildMI(*MF, DL, II).addReg(0U).
+ addImm(Offset).addMetadata(mdPtr);
+ }
+ } else if (kind == SDDbgValue::FX) {
+ unsigned FrameIx = sd->getFrameIx();
+ // Stack address; this needs to be lowered in target-dependent fashion.
+ // FIXME test that the target supports this somehow; if not emit Undef.
+ // Create a pseudo for EmitInstrWithCustomInserter's consumption.
+ MI = BuildMI(*MF, DL, II).addImm(FrameIx).
+ addImm(Offset).addMetadata(mdPtr);
+ MBB = TLI->EmitInstrWithCustomInserter(MI, MBB, EM);
+ InsertPos = MBB->end();
+ return;
} else {
// Insert an Undef so we can see what we dropped.
- MI = BuildMI(*MF, DL, II).addReg(0U).addImm(sd->getOffset()).
- addMetadata(sd->getMDPtr());
+ MI = BuildMI(*MF, DL, II).addReg(0U).
+ addImm(Offset).addMetadata(mdPtr);
}
MBB->insert(InsertPos, MI);
}