From 8b55b736b16f913b7d236d612a6f3acdb73183d1 Mon Sep 17 00:00:00 2001 From: Andrew Trick Date: Mon, 14 Mar 2011 16:50:06 +0000 Subject: Added SCEV::NoWrapFlags to manage unsigned, signed, and self wrap properties. Added the self-wrap flag for SCEV::AddRecExpr. A slew of temporary FIXMEs indicate the intention of the no-self-wrap flag without changing behavior in this revision. llvm-svn: 127590 --- llvm/lib/Analysis/ScalarEvolutionNormalization.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'llvm/lib/Analysis/ScalarEvolutionNormalization.cpp') diff --git a/llvm/lib/Analysis/ScalarEvolutionNormalization.cpp b/llvm/lib/Analysis/ScalarEvolutionNormalization.cpp index ac36cef89eb..60e630aaab8 100644 --- a/llvm/lib/Analysis/ScalarEvolutionNormalization.cpp +++ b/llvm/lib/Analysis/ScalarEvolutionNormalization.cpp @@ -97,7 +97,8 @@ const SCEV *llvm::TransformForPostIncUse(TransformKind Kind, const SCEV *N = TransformForPostIncUse(Kind, O, LUser, 0, Loops, SE, DT); Operands.push_back(N); } - const SCEV *Result = SE.getAddRecExpr(Operands, L); + // Conservatively use AnyWrap until/unless we need FlagNW. + const SCEV *Result = SE.getAddRecExpr(Operands, L, SCEV::FlagAnyWrap); switch (Kind) { default: llvm_unreachable("Unexpected transform name!"); case NormalizeAutodetect: -- cgit v1.2.3