Let dwarf writer allocate extra space in the debug location expression. This space, if requested, will be used for complex addresses of the Blocks' variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130178 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 609da25..a841ed6 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -753,7 +753,8 @@
}
/// EmitDwarfRegOp - Emit dwarf register operation.
-void AsmPrinter::EmitDwarfRegOp(const MachineLocation &MLoc) const {
+void AsmPrinter::EmitDwarfRegOp(const MachineLocation &MLoc,
+ unsigned ExtraExprSize) const {
const TargetRegisterInfo *RI = TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(MLoc.getReg(), false);
if (int Offset = MLoc.getOffset()) {
@@ -761,7 +762,7 @@
// use DW_OP_fbreg.
unsigned OffsetSize = Offset ? MCAsmInfo::getSLEB128Size(Offset) : 1;
OutStreamer.AddComment("Loc expr size");
- EmitInt16(1 + OffsetSize);
+ EmitInt16(1 + OffsetSize + ExtraExprSize);
OutStreamer.AddComment(
dwarf::OperationEncodingString(dwarf::DW_OP_fbreg));
EmitInt8(dwarf::DW_OP_fbreg);
@@ -776,7 +777,7 @@
EmitInt8(dwarf::DW_OP_reg0 + Reg);
} else {
OutStreamer.AddComment("Loc expr size");
- EmitInt16(1 + MCAsmInfo::getULEB128Size(Reg));
+ EmitInt16(1 + MCAsmInfo::getULEB128Size(Reg) + ExtraExprSize);
OutStreamer.AddComment(
dwarf::OperationEncodingString(dwarf::DW_OP_regx));
EmitInt8(dwarf::DW_OP_regx);