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[NFC] Abstract out source argument index in MemTransferInst. 

Summary:
 References to the source operand within class MemTransferInst are currently
by a constant 1. Abstract this out into a named constant.

llvm-svn: 322289
This commit is contained in:
Daniel Neilson 2018-01-11 16:28:32 +00:00
parent 0acf13f659
commit 1d86b48a2d
1 changed files with 7 additions and 4 deletions
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11
llvm/include/llvm/IR/IntrinsicInst.h
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@ -462,11 +462,14 @@ namespace llvm {
/// This class wraps the llvm.memcpy/memmove intrinsics.
class MemTransferInst : public MemIntrinsic {
private:
enum { ARG_SOURCE = 1 };
public:
/// Return the arguments to the instruction.
Value *getRawSource() const { return const_cast<Value*>(getArgOperand(1)); }
const Use &getRawSourceUse() const { return getArgOperandUse(1); }
Use &getRawSourceUse() { return getArgOperandUse(1); }
Value *getRawSource() const { return const_cast<Value*>(getArgOperand(ARG_SOURCE)); }
const Use &getRawSourceUse() const { return getArgOperandUse(ARG_SOURCE); }
Use &getRawSourceUse() { return getArgOperandUse(ARG_SOURCE); }
/// This is just like getRawSource, but it strips off any cast
/// instructions that feed it, giving the original input. The returned
@ -480,7 +483,7 @@ namespace llvm {
void setSource(Value *Ptr) {
assert(getRawSource()->getType() == Ptr->getType() &&
"setSource called with pointer of wrong type!");
setArgOperand(1, Ptr);
setArgOperand(ARG_SOURCE, Ptr);
}
// Methods for support type inquiry through isa, cast, and dyn_cast: