Add some new bits of debug info handling. No
functional change yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97855 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index 02fe85d..625de11 100644
--- a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -15,6 +15,7 @@
#define DEBUG_TYPE "instr-emitter"
#include "InstrEmitter.h"
+#include "SDDbgValue.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
@@ -497,6 +498,56 @@
assert(isNew && "Node emitted out of order - early");
}
+/// EmitDbgValue - Generate any debug info that refers to this Node. Constant
+/// dbg_value is not handled here.
+void
+InstrEmitter::EmitDbgValue(SDNode *Node,
+ DenseMap<SDValue, unsigned> &VRBaseMap,
+ SDDbgValue *sd) {
+ if (!Node->getHasDebugValue())
+ return;
+ if (!sd)
+ return;
+ unsigned VReg = getVR(SDValue(sd->getSDNode(), sd->getResNo()), VRBaseMap);
+ const TargetInstrDesc &II = TII->get(TargetOpcode::DBG_VALUE);
+ DebugLoc DL = sd->getDebugLoc();
+ MachineInstr *MI;
+ if (VReg) {
+ MI = BuildMI(*MF, DL, II).addReg(VReg, RegState::Debug).
+ addImm(sd->getOffset()).
+ addMetadata(sd->getMDPtr());
+ } else {
+ // Insert an Undef so we can see what we dropped.
+ MI = BuildMI(*MF, DL, II).addReg(0U).addImm(sd->getOffset()).
+ addMetadata(sd->getMDPtr());
+ }
+ MBB->insert(InsertPos, MI);
+}
+
+/// EmitDbgValue - Generate constant debug info. No SDNode is involved.
+void
+InstrEmitter::EmitDbgValue(SDDbgValue *sd) {
+ if (!sd)
+ return;
+ const TargetInstrDesc &II = TII->get(TargetOpcode::DBG_VALUE);
+ 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());
+ } else {
+ // Insert an Undef so we can see what we dropped.
+ MI = BuildMI(*MF, DL, II).addReg(0U).addImm(sd->getOffset()).
+ addMetadata(sd->getMDPtr());
+ }
+ MBB->insert(InsertPos, MI);
+}
+
/// EmitNode - Generate machine code for a node and needed dependencies.
///
void InstrEmitter::EmitNode(SDNode *Node, bool IsClone, bool IsCloned,