Update a comment to reflect the code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73704 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 50fb55785abd8fa2285e9cc811e8bf696f115a04..9c6941f0d318b4e263c603f9e3bb2a0db5171223 100644 (file)
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -778,8 +778,7 @@ SCEVHandle ScalarEvolution::getTruncateExpr(const SCEVHandle &Op,
   if (const SCEVZeroExtendExpr *SZ = dyn_cast<SCEVZeroExtendExpr>(Op))
     return getTruncateOrZeroExtend(SZ->getOperand(), Ty);
 
-  // If the input value is a chrec scev made out of constants, truncate
-  // all of the constants.
+  // If the input value is a chrec scev, truncate the chrec's operands.
   if (const SCEVAddRecExpr *AddRec = dyn_cast<SCEVAddRecExpr>(Op)) {
     SmallVector<SCEVHandle, 4> Operands;
     for (unsigned i = 0, e = AddRec->getNumOperands(); i != e; ++i)