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Implement constant propogation of logical (and, or, xor) expressions.

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Fixes testcase: test/Regression/Transforms/ConstProp/logicaltest.ll

llvm-svn: 3153
This commit is contained in:
Chris Lattner 2002-07-30 16:24:25 +00:00
parent 34164fb6c2
commit a4fb4b46c2
1 changed files with 21 additions and 1 deletions
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22
include/llvm/ConstantHandling.h
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@ -71,6 +71,9 @@ public:
virtual Constant *mul(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *div(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *rem(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *op_and(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *op_or (const Constant *V1, const Constant *V2) const = 0;
virtual Constant *op_xor(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *shl(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *shr(const Constant *V1, const Constant *V2) const = 0;
@ -130,7 +133,7 @@ inline Constant *operator~(const Constant &V) {
}
// Standard binary operators...
inline Constant *operator+(const Constant &V1, const Constant &V2) {
assert(V1.getType() == V2.getType() && "Constant types must be identical!");
return ConstRules::get(V1)->add(&V1, &V2);
@ -156,6 +159,23 @@ inline Constant *operator%(const Constant &V1, const Constant &V2) {
return ConstRules::get(V1)->rem(&V1, &V2);
}
// Logical Operators...
inline Constant *operator&(const Constant &V1, const Constant &V2) {
assert(V1.getType() == V2.getType() && "Constant types must be identical!");
return ConstRules::get(V1)->op_and(&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)->op_or(&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)->op_xor(&V1, &V2);
}
// Shift Instructions...
inline Constant *operator<<(const Constant &V1, const Constant &V2) {
assert(V1.getType()->isIntegral() && V2.getType() == Type::UByteTy);
return ConstRules::get(V1)->shl(&V1, &V2);