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Implement constant propogation of multiply and divide instructions!!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2134 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-04-07 08:10:14 +00:00
parent 24823ccd47
commit 05c05ea9ca
4 changed files with 41 additions and 0 deletions
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14
lib/VMCore/ConstantFold.cpp
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@@ -47,6 +47,10 @@ class TemplateRules : public ConstRules {
const Constant *V2) const {
return SubClassName::Mul((const ArgType *)V1, (const ArgType *)V2);
}
virtual Constant *div(const Constant *V1,
const Constant *V2) const {
return SubClassName::Div((const ArgType *)V1, (const ArgType *)V2);
}
virtual ConstantBool *lessthan(const Constant *V1,
const Constant *V2) const {
@@ -107,6 +111,9 @@ class TemplateRules : public ConstRules {
inline static Constant *Mul(const ArgType *V1, const ArgType *V2) {
return 0;
}
inline static Constant *Div(const ArgType *V1, const ArgType *V2) {
return 0;
}
inline static ConstantBool *LessThan(const ArgType *V1, const ArgType *V2) {
return 0;
}
@@ -263,6 +270,13 @@ struct DirectRules
return ConstantClass::get(*Ty, Result);
}
inline static Constant *Div(const ConstantClass *V1,
const ConstantClass *V2) {
BuiltinType Result = (BuiltinType)V1->getValue() /
(BuiltinType)V2->getValue();
return ConstantClass::get(*Ty, Result);
}
inline static ConstantBool *LessThan(const ConstantClass *V1,
const ConstantClass *V2) {
bool Result = (BuiltinType)V1->getValue() < (BuiltinType)V2->getValue();