[LLVMdev] mayload and maystore?
reed kotler
rkotler at mips.com
Fri Sep 30 22:29:52 PDT 2011
these are supposed for any instruction which could possible read/write
memory?
(btw, should be canload or canstore in that case :) )
this does not seem to be consistent with their use in TD files.
/// mayLoad - Return true if this instruction could possibly read memory.
/// Instructions with this flag set are not necessarily simple load
/// instructions, they may load a value and modify it, for example.
bool mayLoad() const {
return Flags & (1 << MCID::MayLoad);
}
/// mayStore - Return true if this instruction could possibly modify
memory.
/// Instructions with this flag set are not necessarily simple store
/// instructions, they may store a modified value based on their
operands, or
/// may not actually modify anything, for example.
bool mayStore() const {
return Flags & (1 << MCID::MayStore);
}
More information about the llvm-dev
mailing list