On Thu, Apr 02, 2015 at 01:03:19PM -0400, David Edelsohn wrote: > On Thu, Apr 2, 2015 at 1:22 AM, Alan Modra <amo...@gmail.com> wrote: > > This cures an unrecognizable insn ICE by modifying a predicate of > > extenddftf2_internal (the only place this predicate is used) to ensure > > that rtl optimization passes do not substitute 0.0 for a register with > > known 0.0 value, except when VSX is enabled. ie. Don't undo the > > necessary register move emitted by the extenddftf2_fprs expander. > > Bootstrapped and regression tested powerpc64le-linux, powerpc64-linux > > and powerpc-linux. OK to apply? > > > > PR target/65576 > > PR target/65240 > > * config/rs6000/predicates.md (zero_reg_mem_operand): Exclude > > 0.0 constant unless TARGET_VSX. > > This change seems to disable the final alternative in the > extenddftf2_internal pattern.
It looks to me like it was already disabled, by r96390. -- Alan Modra Australia Development Lab, IBM
