Displaying 1 result from an estimated 1 matches for "sdnpoptoutflag".
2009 Sep 09
0
[LLVMdev] How to express physical register dependencies between instructions
...ically in the case for conditionnal branch, where an
instruction which sets the condition codes is followed by a conditionnal
branch.
Assuming CCFLAGS is defined in my registerInfo.td, and that I am using
llvm-2.5 release, it seems several items need to be set in the .td file :
1 - SDNPOptInFlag / SDNPOptOutFlag
2 - Defs = [CCFLAGS] / Uses = [CCFLAGS]
3 - (implicit CCFLAGS)
4 - explicit usage of CCFLAGS
As a new comer to LLVM, I am missing the druid's lore to pick up the mixture
of right items to have it work.
I am asking the question because in our case, I observe that the
pre-RA-scheduling pass mov...