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Change the informal convention of DBG_VALUE so that we can express a

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register-indirect address with an offset of 0.
It used to be that a DBG_VALUE is a register-indirect value if the offset
(operand 1) is nonzero. The new convention is that a DBG_VALUE is
register-indirect if the first operand is a register and the second
operand is an immediate. For plain registers use the combination reg, reg.

rdar://problem/13658587

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180816 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl
2013-04-30 22:16:46 +00:00
parent f13fc1b23a
commit a2b56692c8
14 changed files with 222 additions and 45 deletions
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lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+3 -1
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@@ -597,7 +597,9 @@ static bool emitDebugValueComment(const MachineInstr *MI, AsmPrinter &AP) {
OS << AP.TM.getRegisterInfo()->getName(MI->getOperand(0).getReg());
}
OS << '+' << MI->getOperand(1).getImm();
// It's only an offset if it's an immediate.
if (MI->getOperand(1).isImm())
OS << '+' << MI->getOperand(1).getImm();
// NOTE: Want this comment at start of line, don't emit with AddComment.
AP.OutStreamer.EmitRawText(OS.str());
return true;