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Split SimpleConstantVal up into its components, so each Constant subclass gets

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a different enum value.  This allows 'classof' for these to be really simple,
not needing to call getType() anymore.

This speeds up isa/dyncast/etc for constants, and also makes them smaller.
For example, the text section of a release build of InstCombine.cpp shrinks
from 230037 bytes to 216363 bytes, a 6% reduction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23466 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2005-09-27 06:08:32 +00:00
parent a9ec8ab32b
commit 225e8dd2f5
3 changed files with 32 additions and 35 deletions
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8
include/llvm/Constant.h
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@ -61,12 +61,8 @@ public:
static inline bool classof(const Constant *) { return true; }
static inline bool classof(const GlobalValue *) { return true; }
static inline bool classof(const Value *V) {
return V->getValueType() == Value::SimpleConstantVal ||
V->getValueType() == Value::ConstantExprVal ||
V->getValueType() == Value::ConstantAggregateZeroVal ||
V->getValueType() == Value::FunctionVal ||
V->getValueType() == Value::GlobalVariableVal ||
V->getValueType() == Value::UndefValueVal;
return V->getValueType() >= ConstantFirstVal &&
V->getValueType() <= ConstantLastVal;
}
/// replaceUsesOfWithOnConstant - This method is a special form of