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Add support for constant propogation of multiplies

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2001-07-20 19:15:36 +00:00
parent 622f740a7d
commit b5bcbc3bef
1 changed files with 15 additions and 2 deletions
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17
lib/VMCore/ConstantFold.cpp
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@ -42,6 +42,11 @@ class TemplateRules : public ConstRules {
return SubClassName::Sub((const ArgType *)V1, (const ArgType *)V2);
}
virtual ConstPoolVal *mul(const ConstPoolVal *V1,
const ConstPoolVal *V2) const {
return SubClassName::Mul((const ArgType *)V1, (const ArgType *)V2);
}
virtual ConstPoolBool *lessthan(const ConstPoolVal *V1,
const ConstPoolVal *V2) const {
return SubClassName::LessThan((const ArgType *)V1, (const ArgType *)V2);
@ -56,11 +61,12 @@ class TemplateRules : public ConstRules {
inline static ConstPoolVal *Add(const ArgType *V1, const ArgType *V2) {
return 0;
}
inline static ConstPoolVal *Sub(const ArgType *V1, const ArgType *V2) {
return 0;
}
inline static ConstPoolVal *Mul(const ArgType *V1, const ArgType *V2) {
return 0;
}
inline static ConstPoolBool *LessThan(const ArgType *V1, const ArgType *V2) {
return 0;
}
@ -138,6 +144,13 @@ struct DirectRules
return new ConstPoolClass(*Ty, Result);
}
inline static ConstPoolVal *Mul(const ConstPoolClass *V1,
const ConstPoolClass *V2) {
BuiltinType Result = (BuiltinType)V1->getValue() *
(BuiltinType)V2->getValue();
return new ConstPoolClass(*Ty, Result);
}
inline static ConstPoolBool *LessThan(const ConstPoolClass *V1,
const ConstPoolClass *V2) {
bool Result = (BuiltinType)V1->getValue() < (BuiltinType)V2->getValue();