Refactor DebugLocDWARFExpression so it doesn't require access to the

TargetRegisterInfo. DebugLocEntry now holds a buffer with the raw bytes
of the pre-calculated DWARF expression.

Ought to be NFC, but it does slightly alter the output format of the
textual assembly.

This reapplies 230930 without the assertion in DebugLocEntry::finalize()
because not all Machine registers can be lowered into DWARF register
numbers and floating point constants cannot be expressed.

llvm-svn: 231023

1 files changed, 7 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index b0c7d48140f..56e8f11c16a 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -43,6 +43,12 @@ GenerateDwarfTypeUnits("generate-type-units", cl::Hidden,
                        cl::desc("Generate DWARF4 type units."),
                        cl::init(false));
 
+DIEDwarfExpression::DIEDwarfExpression(const AsmPrinter &AP,
+                                       DwarfUnit &DU, DIELoc &DIE)
+  : DwarfExpression(*AP.TM.getSubtargetImpl()->getRegisterInfo(),
+                    AP.getDwarfDebug()->getDwarfVersion()),
+    AP(AP), DU(DU), DIE(DIE) {}
+
 void DIEDwarfExpression::EmitOp(uint8_t Op, const char* Comment) {
   DU.addUInt(DIE, dwarf::DW_FORM_data1, Op);
 }
@@ -53,7 +59,7 @@ void DIEDwarfExpression::EmitUnsigned(unsigned Value) {
   DU.addUInt(DIE, dwarf::DW_FORM_udata, Value);
 }
 bool DIEDwarfExpression::isFrameRegister(unsigned MachineReg) {
-  return MachineReg == getTRI()->getFrameRegister(*AP.MF);
+  return MachineReg == TRI.getFrameRegister(*AP.MF);
 }