[PATCH] D101970: [X86FixupLEAs] Transform the sequence LEA/SUB to SUB/SUB

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: llvm/lib/Target/X86/X86InstrInfo.cpp:2707
+  // Check if Reg1 comes from LEA in the same MBB.
+  if (MachineOperand *Op = MRI.getOneDef(Reg1)) {
+    MachineInstr *Inst = Op->getParent();
----------------
I think you might be able to use getUniqueVRegDef which will return the MachineInstr directly


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  https://reviews.llvm.org/D101970/new/

https://reviews.llvm.org/D101970