"Ling-hua Tseng" <[EMAIL PROTECTED]> writes: > The algorithm is highly dependent on the information of LOG_LINKS(insn). > But I found that there are not any dependecy info for `reload instructions' > because the register allocation pass and reloading pass are peformed after > the first insn scheduling pass.
Right. The LOG_LINKS field is not reliable after reload. > Should I write a violent algorithm to scan these data dependencies? Yes. > Are there any better solutions for this problem? At present, there is not. mips_avoid_hazard in config/mips/mips.c is an example of how the MIPS backend addresses a similar issue. Note the use of DELAYED_REG. Ian
