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Debug info: Factor the retrieving of the DIVariable from a MachineInstr

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into a function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205973 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl 2014-04-10 17:39:48 +00:00
parent f0aeabb5a6
commit b7b9bf458b
2 changed files with 11 additions and 3 deletions
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9
include/llvm/CodeGen/MachineInstr.h
View File

@ -24,6 +24,7 @@
#include "llvm/ADT/ilist_node.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/MC/MCInstrDesc.h"
@ -243,6 +244,14 @@ public:
///
DebugLoc getDebugLoc() const { return debugLoc; }
/// getDebugVariable() - Return the debug variable referenced by
/// this DBG_VALUE instruction.
DIVariable getDebugVariable() const {
assert(isDebugValue() && "not a DBG_VALUE");
const MDNode *Var = getOperand(getNumOperands() - 1).getMetadata();
return DIVariable(Var);
}
/// emitError - Emit an error referring to the source location of this
/// instruction. This should only be used for inline assembly that is somehow
/// impossible to compile. Other errors should have been handled much

5
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -1198,7 +1198,7 @@ static DebugLocEntry getDebugLocEntry(AsmPrinter *Asm,
const MCSymbol *SLabel,
const MachineInstr *MI,
DwarfCompileUnit *Unit) {
const MDNode *Var = MI->getOperand(MI->getNumOperands() - 1).getMetadata();
const MDNode *Var = MI->getDebugVariable();
assert(MI->getNumOperands() == 3);
if (MI->getOperand(0).isReg()) {
@ -1493,8 +1493,7 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
assert(MI->getNumOperands() > 1 && "Invalid machine instruction!");
// Keep track of user variables.
const MDNode *Var =
MI->getOperand(MI->getNumOperands() - 1).getMetadata();
const MDNode *Var = MI->getDebugVariable();
// Variable is in a register, we need to check for clobbers.
if (isDbgValueInDefinedReg(MI))