From 8500e487c71276377a788bb0b7c439416bf06335 Mon Sep 17 00:00:00 2001
From: Max Kazantsev <max.kazantsev@azul.com>
Date: Fri, 8 Dec 2017 12:54:32 +0000
Subject: [PATCH] [NFC] Rename variable from Cond to Pred to make it more sound

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320144 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/ScalarEvolution.cpp | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 8001d99603a..3ed7dde47bb 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -7069,18 +7069,18 @@ ScalarEvolution::computeExitLimitFromICmp(const Loop *L,
                                           bool ControlsExit,
                                           bool AllowPredicates) {
   // If the condition was exit on true, convert the condition to exit on false
-  ICmpInst::Predicate Cond;
+  ICmpInst::Predicate Pred;
   if (!L->contains(FBB))
-    Cond = ExitCond->getPredicate();
+    Pred = ExitCond->getPredicate();
   else
-    Cond = ExitCond->getInversePredicate();
-  const ICmpInst::Predicate OriginalCond = Cond;
+    Pred = ExitCond->getInversePredicate();
+  const ICmpInst::Predicate OriginalPred = Pred;
 
   // Handle common loops like: for (X = "string"; *X; ++X)
   if (LoadInst *LI = dyn_cast<LoadInst>(ExitCond->getOperand(0)))
     if (Constant *RHS = dyn_cast<Constant>(ExitCond->getOperand(1))) {
       ExitLimit ItCnt =
-        computeLoadConstantCompareExitLimit(LI, RHS, L, Cond);
+        computeLoadConstantCompareExitLimit(LI, RHS, L, Pred);
       if (ItCnt.hasAnyInfo())
         return ItCnt;
     }
@@ -7097,11 +7097,11 @@ ScalarEvolution::computeExitLimitFromICmp(const Loop *L,
   if (isLoopInvariant(LHS, L) && !isLoopInvariant(RHS, L)) {
     // If there is a loop-invariant, force it into the RHS.
     std::swap(LHS, RHS);
-    Cond = ICmpInst::getSwappedPredicate(Cond);
+    Pred = ICmpInst::getSwappedPredicate(Pred);
   }
 
   // Simplify the operands before analyzing them.
-  (void)SimplifyICmpOperands(Cond, LHS, RHS);
+  (void)SimplifyICmpOperands(Pred, LHS, RHS);
 
   // If we have a comparison of a chrec against a constant, try to use value
   // ranges to answer this query.
@@ -7110,13 +7110,13 @@ ScalarEvolution::computeExitLimitFromICmp(const Loop *L,
       if (AddRec->getLoop() == L) {
         // Form the constant range.
         ConstantRange CompRange =
-            ConstantRange::makeExactICmpRegion(Cond, RHSC->getAPInt());
+            ConstantRange::makeExactICmpRegion(Pred, RHSC->getAPInt());
 
         const SCEV *Ret = AddRec->getNumIterationsInRange(CompRange, *this);
         if (!isa<SCEVCouldNotCompute>(Ret)) return Ret;
       }
 
-  switch (Cond) {
+  switch (Pred) {
   case ICmpInst::ICMP_NE: {                     // while (X != Y)
     // Convert to: while (X-Y != 0)
     ExitLimit EL = howFarToZero(getMinusSCEV(LHS, RHS), L, ControlsExit,
@@ -7132,7 +7132,7 @@ ScalarEvolution::computeExitLimitFromICmp(const Loop *L,
   }
   case ICmpInst::ICMP_SLT:
   case ICmpInst::ICMP_ULT: {                    // while (X < Y)
-    bool IsSigned = Cond == ICmpInst::ICMP_SLT;
+    bool IsSigned = Pred == ICmpInst::ICMP_SLT;
     ExitLimit EL = howManyLessThans(LHS, RHS, L, IsSigned, ControlsExit,
                                     AllowPredicates);
     if (EL.hasAnyInfo()) return EL;
@@ -7140,7 +7140,7 @@ ScalarEvolution::computeExitLimitFromICmp(const Loop *L,
   }
   case ICmpInst::ICMP_SGT:
   case ICmpInst::ICMP_UGT: {                    // while (X > Y)
-    bool IsSigned = Cond == ICmpInst::ICMP_SGT;
+    bool IsSigned = Pred == ICmpInst::ICMP_SGT;
     ExitLimit EL =
         howManyGreaterThans(LHS, RHS, L, IsSigned, ControlsExit,
                             AllowPredicates);
@@ -7158,7 +7158,7 @@ ScalarEvolution::computeExitLimitFromICmp(const Loop *L,
     return ExhaustiveCount;
 
   return computeShiftCompareExitLimit(ExitCond->getOperand(0),
-                                      ExitCond->getOperand(1), L, OriginalCond);
+                                      ExitCond->getOperand(1), L, OriginalPred);
 }
 
 ScalarEvolution::ExitLimit
-- 
2.11.0