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Add a ScalarEvolution::getAnyExtendExpr utility function for performing

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extension with unspecified bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73293 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-06-13 15:56:47 +00:00
parent e7d6df7353
commit 2ce84c8d47
2 changed files with 66 additions and 0 deletions
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7
include/llvm/Analysis/ScalarEvolution.h
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@@ -393,6 +393,7 @@ namespace llvm {
SCEVHandle getTruncateExpr(const SCEVHandle &Op, const Type *Ty);
SCEVHandle getZeroExtendExpr(const SCEVHandle &Op, const Type *Ty);
SCEVHandle getSignExtendExpr(const SCEVHandle &Op, const Type *Ty);
SCEVHandle getAnyExtendExpr(const SCEVHandle &Op, const Type *Ty);
SCEVHandle getAddExpr(std::vector<SCEVHandle> &Ops);
SCEVHandle getAddExpr(const SCEVHandle &LHS, const SCEVHandle &RHS) {
std::vector<SCEVHandle> Ops;
@@ -465,6 +466,12 @@ namespace llvm {
/// it is sign extended. The conversion must not be narrowing.
SCEVHandle getNoopOrSignExtend(const SCEVHandle &V, const Type *Ty);
/// getNoopOrAnyExtend - Return a SCEV corresponding to a conversion of
/// the input value to the specified type. If the type must be extended,
/// it is extended with unspecified bits. The conversion must not be
/// narrowing.
SCEVHandle getNoopOrAnyExtend(const SCEVHandle &V, const Type *Ty);
/// getTruncateOrNoop - Return a SCEV corresponding to a conversion of the
/// input value to the specified type. The conversion must not be
/// widening.