From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12919 invoked by alias); 21 Apr 2002 14:26:00 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 12903 invoked by uid 71); 21 Apr 2002 14:26:00 -0000 Date: Sun, 21 Apr 2002 07:26:00 -0000 Message-ID: <20020421142600.12902.qmail@sources.redhat.com> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, From: "Billinghurst, David \(CRTS\)" Subject: RE: fortran/6304: Failure of LAPACK test dtest on irix6.5 with -mabi=64 -O2 Reply-To: "Billinghurst, David \(CRTS\)" X-SW-Source: 2002-04/txt/msg01070.txt.bz2 List-Id: The following reply was made to PR fortran/6304; it has been noted by GNATS. From: "Billinghurst, David (CRTS)" To: , Cc: Subject: RE: fortran/6304: Failure of LAPACK test dtest on irix6.5 with -mabi=64 -O2 Date: Mon, 22 Apr 2002 00:25:06 +1000 Test case is now attached to PR. Either GNATS lost the original, or I=20 forgot to attach it. =20 The reduced test case last passed at 2001-12-13 11:30 UTC. The patch = that=20 introduced (or uncovered) this failure also broke irix bootstrap. I=20 identified and applied the fix by rth that allows bootstrapping to=20 confirm this analysis. The test that triggers the failure is =20 Thu Dec 13 12:31:07 CET 2001 Jan Hubicka * predict.c (estimate_probability): Reorganize opcode heuristics. * predict.def (PRED_OPCODE_POSITIVE, PRED_OPCODE_NONEQUAL, PRED_FPOPCODE): New. * i386.c (override_options): Recognize various CPU variants and set SSE/MMX/3dNOW flags accordingly. * i386.h (MASK_MMX_SET, MASK_SSE_SET, MASK_SSE2_SET, MASK_3DNOW_SET, MASK_3DNOW_A_SET): New. (MASK_ACCUMULATE_OUTGOING_ARGS_SET): New. (MASK_NO_ACCUMULATE_OUTGOING_ARGS): Delete. (MASK_*): Renumber. (TARGET_FLAGS): Use new masks. (CPP_CPU_SPECS): Recognize new CPU variants. * invoke.texi (-mcpu): Update documentation. * flags.h (flag_prefetch_loop_arrays): Declare. * loop.h (LOOP_PREFETCH): Define new constant. * loop.c (strength_reduce): Call emit_prefetch_instructions. (MAX_PREFETCHES, PREFETCH_BLOCKS_BEFORE_LOOP_MAX, PREFETCH_BLOCKS_BEFORE_LOOP_MIN, PREFETCH_BLOCKS_IN_LOOP_MIN): New constants. (check_store_data): New structure. (check_store, emit_prefetch_instructions, rtx_equal_for_prefetch_p): New functions. * toplev.c: Include insn-flags.h. (flag_prefetch_loop_arrays): New global variable. (lang_independent_option): Add -fprefetch-loop-arrays. (rest_of_compilation) Pass LOOP_PREFETCH when flag_prefetch_loop_arrays is set. * Makefile.in (toplev.c): Depend on insn-flags.h. * invoke.texi (-fprefetch-loop-arrays): Document. * predict.c (estimate_probability): Distribute the loop exit probability according to number of exit edges. * cfgcleanup.c (insns_match_p): Break out from ...; (flow_find_cross_jump): ... here; (outgoing_edges_match): Add parameter MODE; attempt to match everything except for tablejumps. (try_crossjump_to_edge): Accept complex edges. (try_crossjump_bb): Likewise. The patch that enabled irix6.5 bootstrap is 2001-12-16 Richard Henderson * toplev.c (parse_options_and_default_flags): Don't enable flag_cprop_registers at -O1.