When creating cast scevs, canonicalize the destination type. This
avoids duplicate scevs that differ only in type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70549 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 3e2b735..ae3eb48 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -649,6 +649,9 @@
SCEVHandle ScalarEvolution::getTruncateExpr(const SCEVHandle &Op, const Type *Ty) {
assert(getTypeSizeInBits(Op->getType()) > getTypeSizeInBits(Ty) &&
"This is not a truncating conversion!");
+ assert(isSCEVable(Ty) &&
+ "This is not a conversion to a SCEVable type!");
+ Ty = getEffectiveSCEVType(Ty);
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(Op))
return getUnknown(
@@ -689,6 +692,9 @@
const Type *Ty) {
assert(getTypeSizeInBits(Op->getType()) < getTypeSizeInBits(Ty) &&
"This is not an extending conversion!");
+ assert(isSCEVable(Ty) &&
+ "This is not a conversion to a SCEVable type!");
+ Ty = getEffectiveSCEVType(Ty);
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(Op)) {
const Type *IntTy = getEffectiveSCEVType(Ty);
@@ -771,6 +777,9 @@
const Type *Ty) {
assert(getTypeSizeInBits(Op->getType()) < getTypeSizeInBits(Ty) &&
"This is not an extending conversion!");
+ assert(isSCEVable(Ty) &&
+ "This is not a conversion to a SCEVable type!");
+ Ty = getEffectiveSCEVType(Ty);
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(Op)) {
const Type *IntTy = getEffectiveSCEVType(Ty);