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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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9
include/llvm/ConstantHandling.h
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@ -73,6 +73,8 @@ public:
const Constant *V2) const = 0;
virtual Constant *mul(const Constant *V1,
const Constant *V2) const = 0;
virtual Constant *div(const Constant *V1,
const Constant *V2) const = 0;
virtual ConstantBool *lessthan(const Constant *V1,
const Constant *V2) const = 0;
@ -146,6 +148,11 @@ inline Constant *operator*(const Constant &V1, const Constant &V2) {
return ConstRules::get(V1)->mul(&V1, &V2);
}
inline Constant *operator/(const Constant &V1, const Constant &V2) {
assert(V1.getType() == V2.getType() && "Constant types must be identical!");
return ConstRules::get(V1)->div(&V1, &V2);
}
inline ConstantBool *operator<(const Constant &V1,
const Constant &V2) {
assert(V1.getType() == V2.getType() && "Constant types must be identical!");
@ -197,6 +204,8 @@ inline Constant *ConstantFoldBinaryInstruction(unsigned Opcode,
switch (Opcode) {
case Instruction::Add: return *V1 + *V2;
case Instruction::Sub: return *V1 - *V2;
case Instruction::Mul: return *V1 * *V2;
case Instruction::Div: return *V1 / *V2;
case Instruction::SetEQ: return *V1 == *V2;
case Instruction::SetNE: return *V1 != *V2;