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Refactor the ScalarTargetTransformInfo API for querying about the

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legality of an address mode to not use a struct of four values and
instead to accept them as parameters. I'd love to have named parameters
here as most callers only care about one or two of these, but the
defaults aren't terribly scary to write out.

That said, there is no real impact of this as the passes aren't yet
using STTI for this and are still relying upon TargetLowering.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171595 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2013-01-05 03:36:17 +00:00
parent b1a429fd1c
commit 64e407be0d
3 changed files with 14 additions and 4 deletions
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4
include/llvm/Target/TargetTransformImpl.h
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@ -37,7 +37,9 @@ public:
virtual bool isLegalICmpImmediate(int64_t imm) const;
virtual bool isLegalAddressingMode(const AddrMode &AM, Type *Ty) const;
virtual bool isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
int64_t BaseOffset, bool HasBaseReg,
int64_t Scale) const;
virtual bool isTruncateFree(Type *Ty1, Type *Ty2) const;

4
include/llvm/TargetTransformInfo.h
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@ -109,7 +109,9 @@ public:
/// The type may be VoidTy, in which case only return true if the addressing
/// mode is legal for a load/store of any legal type.
/// TODO: Handle pre/postinc as well.
virtual bool isLegalAddressingMode(const AddrMode &AM, Type *Ty) const {
virtual bool isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
int64_t BaseOffset, bool HasBaseReg,
int64_t Scale) const {
return false;
}
/// isTruncateFree - Return true if it's free to truncate a value of

10
lib/Target/TargetTransformImpl.cpp
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@ -27,8 +27,14 @@ bool ScalarTargetTransformImpl::isLegalICmpImmediate(int64_t imm) const {
return TLI->isLegalICmpImmediate(imm);
}
bool ScalarTargetTransformImpl::isLegalAddressingMode(const AddrMode &AM,
Type *Ty) const {
bool ScalarTargetTransformImpl::isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
int64_t BaseOffset, bool HasBaseReg,
int64_t Scale) const {
AddrMode AM;
AM.BaseGV = BaseGV;
AM.BaseOffs = BaseOffset;
AM.HasBaseReg = HasBaseReg;
AM.Scale = Scale;
return TLI->isLegalAddressingMode(AM, Ty);
}