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Implement constant folding of casts from boolean constants to other values 

llvm-svn: 7812
This commit is contained in:
Chris Lattner 2003-08-13 15:52:25 +00:00
parent 35364c8408
commit cea4d8c2f5
1 changed files with 19 additions and 0 deletions
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19
llvm/lib/VMCore/ConstantHandling.cpp
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@ -344,6 +344,25 @@ struct BoolRules : public TemplateRules<ConstantBool, BoolRules> {
static Constant *Xor(const ConstantBool *V1, const ConstantBool *V2) { static Constant *Xor(const ConstantBool *V1, const ConstantBool *V2) {
return ConstantBool::get(V1->getValue() ^ V2->getValue()); return ConstantBool::get(V1->getValue() ^ V2->getValue());
} }
// Casting operators. ick
#define DEF_CAST(TYPE, CLASS, CTYPE) \
static CLASS *CastTo##TYPE (const ConstantBool *V) { \
return CLASS::get(Type::TYPE##Ty, (CTYPE)(bool)V->getValue()); \
}
DEF_CAST(Bool , ConstantBool, bool)
DEF_CAST(SByte , ConstantSInt, signed char)
DEF_CAST(UByte , ConstantUInt, unsigned char)
DEF_CAST(Short , ConstantSInt, signed short)
DEF_CAST(UShort, ConstantUInt, unsigned short)
DEF_CAST(Int , ConstantSInt, signed int)
DEF_CAST(UInt , ConstantUInt, unsigned int)
DEF_CAST(Long , ConstantSInt, int64_t)
DEF_CAST(ULong , ConstantUInt, uint64_t)
DEF_CAST(Float , ConstantFP , float)
DEF_CAST(Double, ConstantFP , double)
#undef DEF_CAST
}; };