From: Dávid Bolvanský <david.bolvansky@gmail.com>
Date: Thu, 24 Mar 2022 07:33:29 +0000 (+0100)
Subject: [NFCI] Fix set-but-unused warning in InstCombineAddSub.cpp
X-Git-Tag: upstream/15.0.7~12480
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4397504c2d12c0101367b941308773d1504ac5fe;p=platform%2Fupstream%2Fllvm.git

[NFCI] Fix set-but-unused warning in InstCombineAddSub.cpp
---

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
index de79fe0..5e4d842 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
@@ -693,9 +693,6 @@ unsigned FAddCombine::calcInstrNumber(const AddendVect &Opnds) {
   unsigned OpndNum = Opnds.size();
   unsigned InstrNeeded = OpndNum - 1;
 
-  // The number of addends in the form of "(-1)*x".
-  unsigned NegOpndNum = 0;
-
   // Adjust the number of instructions needed to emit the N-ary add.
   for (const FAddend *Opnd : Opnds) {
     if (Opnd->isConstant())
@@ -707,9 +704,6 @@ unsigned FAddCombine::calcInstrNumber(const AddendVect &Opnds) {
       continue;
 
     const FAddendCoef &CE = Opnd->getCoef();
-    if (CE.isMinusOne() || CE.isMinusTwo())
-      NegOpndNum++;
-
     // Let the addend be "c * x". If "c == +/-1", the value of the addend
     // is immediately available; otherwise, it needs exactly one instruction
     // to evaluate the value.