Author: nicholas
Date: Tue Nov 20 02:44:50 2007
New Revision: 44249
URL: http://llvm.org/viewvc/llvm-project?rev=44249&view=rev
Log:
Small cleanup. Use APInt::getHighBitsSet method instead of shift left.
"setcc" -> "icmp op" in comments. No functionality change.
Modified:
llvm/trunk/lib/Analysis/ScalarEvolution.cpp
Modified: llvm/trunk/lib/Analysis/ScalarEvolution.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ScalarEvolution.cpp?rev=44249&r1=44248&r2=44249&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/ScalarEvolution.cpp (original)
+++ llvm/trunk/lib/Analysis/ScalarEvolution.cpp Tue Nov 20 02:44:50 2007
@@ -1207,7 +1207,7 @@
SCEVHandle ComputeIterationCount(const Loop *L);
/// ComputeLoadConstantCompareIterationCount - Given an exit condition of
- /// 'setcc load X, cst', try to see if we can compute the trip count.
+ /// 'icmp op load X, cst', try to see if we can compute the trip count.
SCEVHandle ComputeLoadConstantCompareIterationCount(LoadInst *LI,
Constant *RHS,
const Loop *L,
@@ -1418,13 +1418,12 @@
if (!V.isMinValue())
return V;
else // Zero is a multiple of everything.
- return APInt(C->getBitWidth(), 1).shl(C->getBitWidth()-1);
+ return APInt::getHighBitsSet(C->getBitWidth(), 1);
}
- if (SCEVTruncateExpr *T = dyn_cast<SCEVTruncateExpr>(S)) {
+ if (SCEVTruncateExpr *T = dyn_cast<SCEVTruncateExpr>(S))
return GetConstantFactor(T->getOperand()).trunc(
cast<IntegerType>(T->getType())->getBitWidth());
- }
if (SCEVZeroExtendExpr *E = dyn_cast<SCEVZeroExtendExpr>(S))
return GetConstantFactor(E->getOperand()).zext(
cast<IntegerType>(E->getType())->getBitWidth());
@@ -1787,7 +1786,7 @@
}
/// ComputeLoadConstantCompareIterationCount - Given an exit condition of
-/// 'setcc load X, cst', try to se if we can compute the trip count.
+/// 'icmp op load X, cst', try to se if we can compute the trip count.
SCEVHandle ScalarEvolutionsImpl::
ComputeLoadConstantCompareIterationCount(LoadInst *LI, Constant *RHS,
const Loop *L,
_______________________________________________
llvm-commits mailing list
llvm-commits@cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
