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Re: [PATCH rs6000] Disable some Cell microcoded instructions


* doc/invoke.texi (-mgen-cell-microcode): Document.
(-mwarn-cell-microcode): Document.
* cfglayout.c (locator_location): Export.
* rtl.h (locator_location): Define prototype.
* config/rs6000/predicates.md (cc_reg_not_micro_cr0_operand): New predicate.
* rs6000/rs6000-protos.h (rs6000_final_prescan_insn): Define prototype.
* config/rs6000/rs6000.opt (mgen-cell-microcode): New option.
(mwarn-cell-microcode): New option.
* rs6000/rs6000.c (rs6000_cell_dont_microcode): Delete unused variable.
(rs6000_override_options): Set rs6000_gen_cell_microcode if tuning for
cell and not already set.
Turn off string instructions if not generating cell microcode.
(rs6000_final_prescan_insn): New function that warns about microcoded
instructions.
* config/rs6000/rs6000.h (FINAL_PRESCAN_INSN): Define.
* config/rs6000/rs6000.md
Replace cc_reg_not_cr0_operand with cc_reg_not_micro_cr0_operand if
the instruction would have been microcoded on the Cell.
Set cell_micro to always on unnamed patterns for the string instructions.
(cell_micro): Update definition, remove load/store conditional microcoded.
(sign_extend:DI): Define new pattern for non microcoded version.
(sign_extend:SI): Likewise.
(compare (div:P)): Set cell_micro to not.
(andsi3): Define as an expand.
(andsi3_mc): New pattern.
(andsi3_nomc): New pattern.
(andsi3_internal0_nomc): New pattern.
(andsi3_internal2): Rename to ...
(andsi3_internal2_mc): this and enable iff generating microcode.
(andsi3_internal3): Rename to ...
(andsi3_internal3_mc): this and enable iff generating microcode.
(andsi3_internal4): Enable iif generating microcode.
(andsi3_internal5): Rename to ..
(andsi3_internal5_mc): this and enable iff generating microcode.
(andsi3_internal5_nomc): New pattern.
(extzvdi_internal1): Enable iff generating microcode.
(extzvdi_internal2): Likewise.
(rotlsi3_internal7): Set cell_micro to always if non immediate form.
(anddi3): Change to expand.
(anddi3_mc): Rename from anddi3.
(anddi3_no_mc): New pattern.
(anddi3_internal2): Rename to ..
(anddi3_internal2_mc): this and enable iff generating microcode.
(anddi3_internal2_nomc): New pattern.
(anddi3_internal3): Rename to ..
(anddi3_internal3_mc): this and enable iff generating microcode.
(anddi3_internal3_nomc): New pattern.
(movti_string): Set cell_micro to always if TARGET_STRING.
(stmsi8): Set cell_micro to always.
(stmsi7): Likewise.
(stmsi6): Likewise.
(stmsi5): Likewise.
(stmsi4): Likewise.
(stmsi3): Likewise.
(stmsi8_power): Likewise.
(stmsi7_power): Likewise.
(stmsi6_power): Likewise.
(stmsi5_power): Likewise.
(stmsi4_power): Likewise.
(stmsi3_power): Likewise.
(movsi_update2): Enable iff generating microcode.
(movhi_update3): Likewise.
(lmw): Set cell_micro to always.

Okay.

Thanks, David


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