make clients have to know how to call getCallSiteDependencyFrom

[oota-llvm.git] / lib / Analysis / ScalarEvolutionExpander.cpp

diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index 628129dc5f05c411b3b879ee124386bbfaf6882f..211f013c25c49f8577521a010eafc27e795ae21a 100644 (file)
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -143,6 +143,15 @@ Value *SCEVExpander::visitUDivExpr(SCEVUDivExpr *S) {
   return InsertBinop(Instruction::UDiv, LHS, RHS, InsertPt);
 }
 
+Value *SCEVExpander::visitSDivExpr(SCEVSDivExpr *S) {
+  // Do not fold sdiv into ashr, unless you know that LHS is positive. On
+  // negative values, it rounds the wrong way.
+
+  Value *LHS = expand(S->getLHS());
+  Value *RHS = expand(S->getRHS());
+  return InsertBinop(Instruction::SDiv, LHS, RHS, InsertPt);
+}
+
 Value *SCEVExpander::visitAddRecExpr(SCEVAddRecExpr *S) {
   const Type *Ty = S->getType();
   const Loop *L = S->getLoop();
@@ -242,17 +251,17 @@ Value *SCEVExpander::visitAddRecExpr(SCEVAddRecExpr *S) {
 
 Value *SCEVExpander::visitTruncateExpr(SCEVTruncateExpr *S) {
   Value *V = expand(S->getOperand());
-  return CastInst::createTruncOrBitCast(V, S->getType(), "tmp.", InsertPt);
+  return CastInst::CreateTruncOrBitCast(V, S->getType(), "tmp.", InsertPt);
 }
 
 Value *SCEVExpander::visitZeroExtendExpr(SCEVZeroExtendExpr *S) {
   Value *V = expand(S->getOperand());
-  return CastInst::createZExtOrBitCast(V, S->getType(), "tmp.", InsertPt);
+  return CastInst::CreateZExtOrBitCast(V, S->getType(), "tmp.", InsertPt);
 }
 
 Value *SCEVExpander::visitSignExtendExpr(SCEVSignExtendExpr *S) {
   Value *V = expand(S->getOperand());
-  return CastInst::createSExtOrBitCast(V, S->getType(), "tmp.", InsertPt);
+  return CastInst::CreateSExtOrBitCast(V, S->getType(), "tmp.", InsertPt);
 }
 
 Value *SCEVExpander::visitSMaxExpr(SCEVSMaxExpr *S) {