Use DW_OP_fbreg when offset is based on frame register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114585 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 8e3c1f1..ae193e6 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -811,6 +811,16 @@
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+ const TargetRegisterInfo *TRI = Asm->TM.getRegisterInfo();
+
+ if (TRI->getFrameRegister(*Asm->MF) == Location.getReg()
+ && Location.getOffset()) {
+ // If variable offset is based in frame register then use fbreg.
+ addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_fbreg);
+ addSInt(Block, 0, dwarf::DW_FORM_sdata, Location.getOffset());
+ addBlock(Die, Attribute, 0, Block);
+ return;
+ }
if (Location.isReg()) {
if (Reg < 32) {