On Thu, Mar 26, 2015 at 11:25 AM, Bill Schmidt <wschm...@linux.vnet.ibm.com> wrote:
>> This is a follow-up to >> https://gcc.gnu.org/ml/gcc-patches/2015-03/msg01310.html, which >> backported the POWER-specific little-endian swap optimization pass to >> the 4.9 branch. We also need to backport this to the 4.8 branch. This >> patch does that. >> >> The patch is very similar to the 4.9 backport, except for two things. >> First, the passes infrastructure changed quite a bit between 4.8 and >> 4.9, so the code to describe the new pass to the pass manager is >> somewhat different. Second, I've omitted three of the test cases, which >> happen to fail on 4.8 for unrelated reasons. (We run out of volatile >> registers and end up saving non-volatiles to the stack in the prologue, >> which generates load/swap sequences for now.) >> >> Tested on powerpc64le-unknown-linux-gnu with no regressions. Is this OK >> for 4.8? >> >> Thanks, >> Bill >> >> >> [gcc] >> >> 2015-03-26 Bill Schmidt <wschm...@linux.vnet.ibm.com> >> >> Backport of r214242, r214254, and bug fix patches from mainline >> * config/rs6000/rs6000.c (tree-pass.h): New #include. >> (rs6000_analyze_swaps): New declaration. >> (gate_analyze_swaps): New function. >> (execute_analyze_swaps): Likewise. >> (pass_analyze_swaps): New struct rtl_opt_pass. >> (rs6000_option_override): Register swap-optimization pass. >> (swap_web_entry): New class. >> (special_handling_values): New enum. >> (union_defs): New function. >> (union_uses): Likewise. >> (insn_is_load_p): Likewise. >> (insn_is_store_p): Likewise. >> (insn_is_swap_p): Likewise. >> (rtx_is_swappable_p): Likewise. >> (insn_is_swappable_p): Likewise. >> (chain_purpose): New enum. >> (chain_contains_only_swaps): New function. >> (mark_swaps_for_removal): Likewise. >> (swap_const_vector_halves): Likewise. >> (adjust_subreg_index): Likewise. >> (permute_load): Likewise. >> (permute_store): Likewise. >> (adjust_extract): Likewise. >> (adjust_splat): Likewise. >> (handle_special_swappables): Likewise. >> (replace_swap_with_copy): Likewise. >> (dump_swap_insn_table): Likewise. >> (rs6000_analyze_swaps): Likewise. >> * config/rs6000/rs6000.opt (moptimize-swaps): New option. >> * df.h (web_entry_base): New class, replacing struct web_entry. >> (web_entry_base::pred): New method. >> (web_entry_base::set_pred): Likewise. >> (web_entry_base::unionfind_root): Likewise. >> (web_entry_base::unionfind_union): Likewise. >> (unionfind_root): Delete external reference. >> (unionfind_union): Likewise. >> (union_defs): Likewise. >> * web.c (web_entry_base::unionfind_root): Convert to method. >> (web_entry_base::unionfind_union): Likewise. >> (web_entry): New class. >> (union_match_dups): Convert to use class structure. >> (union_defs): Likewise. >> (entry_register): Likewise. >> (web_main): Likewise. >> >> >> [gcc/testsuite] >> >> 2015-03-26 Bill Schmidt <wschm...@linux.vnet.ibm.com> >> >> Backport r214254 and related tests from mainline >> * gcc.target/powerpc/swaps-p8-1.c: New test. >> * gcc.target/powerpc/swaps-p8-3.c: New test. >> * gcc.target/powerpc/swaps-p8-4.c: New test. >> * gcc.target/powerpc/swaps-p8-5.c: New test. >> * gcc.target/powerpc/swaps-p8-6.c: New test. >> * gcc.target/powerpc/swaps-p8-7.c: New test. >> * gcc.target/powerpc/swaps-p8-8.c: New test. >> * gcc.target/powerpc/swaps-p8-9.c: New test. >> * gcc.target/powerpc/swaps-p8-10.c: New test. >> * gcc.target/powerpc/swaps-p8-11.c: New test. >> * gcc.target/powerpc/swaps-p8-12.c: New test. >> * gcc.target/powerpc/swaps-p8-13.c: New test. >> * gcc.target/powerpc/swaps-p8-15.c: New test. >> * gcc.target/powerpc/swaps-p8-17.c: New test. Okay. Thanks, David
