I agree returning to the GCC 14 behaviour is the best approach given the
current stage.
> -Original Message-
> From: Jakub Jelinek
> Sent: 03 April 2025 09:16
> To: Roger Sayle
> Cc: 'Richard Biener' ; 'Jan Hubicka' ;
'Uros
> Bizjak' ;
issue
(where the current trunk implementation is typically more correct than GCC
14's).
Thoughts?
> -Original Message-
> From: Jakub Jelinek
> Sent: 02 April 2025 12:30
> To: Richard Biener ; Jan Hubicka ; Uros
Bizjak
> ; Roger Sayle ; Richard
> Sandiford
>
https://gcc.gnu.org/g:0f8fd6b336161ed0582edb08dbe6ea1932290a75
commit r15-7473-g0f8fd6b336161ed0582edb08dbe6ea1932290a75
Author: Roger Sayle
Date: Tue Feb 11 12:21:43 2025 +
Synchronize include/dwarf2.def with binutils
The contents of include/dwarf2.def have diverged between
file by copying
the definition of DW_CFA_AARCH64_negate_ra_state_with_pc from binutils,
restoring the ability to build a combined source tree.
Tested on x86_64-pc-linux-gnu with "make bootstrap".
Ok for mainline?
2025-02-10 Roger Sayle
include/Chang
https://gcc.gnu.org/g:bac00c34226bac3a95979b21dc2d668a96b14f6e
commit r15-3342-gbac00c34226bac3a95979b21dc2d668a96b14f6e
Author: Roger Sayle
Date: Sat Aug 31 14:17:18 2024 -0600
i386: Support read-modify-write memory operands in STV.
This patch enables STV when the first operand
xmm0
vmovdqa %xmm0, m(%rip)
ret
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-08-31 Roger Sayle
gcc/ChangeLog
* config/i386/i386-feature
https://gcc.gnu.org/g:3cb92be94e6581697369eeafdb67057c8cfba73f
commit r15-3281-g3cb92be94e6581697369eeafdb67057c8cfba73f
Author: Roger Sayle
Date: Wed Aug 28 21:19:28 2024 -0600
i386: Support wide immediate constants in STV.
This patch provides more accurate costs/gains for (wide
https://gcc.gnu.org/g:07d62a1711f3e3bbdd2146ab5914d3bc5e246509
commit r15-3162-g07d62a1711f3e3bbdd2146ab5914d3bc5e246509
Author: Roger Sayle
Date: Sun Aug 25 09:14:34 2024 -0600
i386: Update STV's gains for TImode arithmetic right shifts on AVX2.
This patch t
ithout --target_board=unix{-m32}
with no new failures. No new testcase (yet) as the code for both the
vector and scalar forms of the above function are still suboptimal
so code generation is in flux, but this improvement should be a step
in the right direction. Ok for mainline?
2024-08-24 Roger Sayle
https://gcc.gnu.org/g:b6fb4f7f651d2aa89548c5833fe2679af2638df5
commit r15-2940-gb6fb4f7f651d2aa89548c5833fe2679af2638df5
Author: Roger Sayle
Date: Thu Aug 15 22:02:05 2024 +0100
i386: Improve split of *extendv2di2_highpart_stv_noavx512vl.
This patch follows up on the previous
instruction.
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-08-15 Roger Sayle
gcc/ChangeLog
* config/i386/i386-features.cc (timode_immed_const_gain): New
which applies
when not performing the above optimization, i.e. on TARGET_XOP.
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-08-15 Roger Sayle
Uros B
Hi Xianmiao,
I have no objection to reverting that original patch, if it was indeed made
obsolete by
later changes to the i386 backend.
The theory at the time was that it was possible for backends to define mov
instructions
that emitted clobbers if necessary, but it's very difficult for a backen
https://gcc.gnu.org/g:7a970bd03f1d8eed7703db8a8db3c753ea68899f
commit r15-2880-g7a970bd03f1d8eed7703db8a8db3c753ea68899f
Author: Roger Sayle
Date: Mon Aug 12 06:52:48 2024 +0100
PR target/116275: Handle STV of *extenddi2_doubleword_highpart on i386.
This patch resolves PR target
h and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-08-11 Roger Sayle
gcc/ChangeLog
PR target/116275
* config/i386/i386.md (*extendv2di2_highpart_stv_noavx512vl): New
define_insn_and_split to handle the STV conversion of the DImode
pa
https://gcc.gnu.org/g:4d44f3fc387815eb232d7757352857993a1d21d9
commit r15-2816-g4d44f3fc387815eb232d7757352857993a1d21d9
Author: Roger Sayle
Date: Thu Aug 8 11:16:29 2024 +0100
i386: Tweak ix86_mode_can_transfer_bits to restore bootstrap on RHEL.
This minor patch, very similar to
DFmode being "non-literal types in constant expressions".
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, with no new failures. Ok for mainline?
2024-08-08 Roger Sayle
gcc/ChangeLog
* config/i386/i386.cc (ix86_mode_can_transfer_bit
e
has been committed as obvious. Sorry again for the inconvenience.
Tested on x86_64-pc-linux-gnu with RUNTESTFLAGS="dg.exp=sse2-pr85572-1.C".
2024-08-07 Roger Sayle
gcc/testsuite/ChangeLog
* g++.dg/other/sse2-pr85572-1.C: Update expected output after
my recent patc
https://gcc.gnu.org/g:990a65fb1aa5d1b05a7737df879afb6900e2ce96
commit r15-2793-g990a65fb1aa5d1b05a7737df879afb6900e2ce96
Author: Roger Sayle
Date: Wed Aug 7 12:52:26 2024 +0100
testsuite: Fix recent regression of g++.dg/other/sse2-pr85572-1.C
My sincere apologies for not noticing
https://gcc.gnu.org/g:2f759fa9f4dd78ae8d86482ccda72a335aaac404
commit r15-2758-g2f759fa9f4dd78ae8d86482ccda72a335aaac404
Author: Roger Sayle
Date: Tue Aug 6 17:19:29 2024 +0100
i386: Refactor V2DI arithmetic right shift expansion for STV.
This patch refactors ashrv2di RTL
-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-08-05 Roger Sayle
gcc/ChangeLog
* config/i386/i386-features.cc (timode_immed_const_gain): New
function to determine the gain/cost on a CONST_
ficial).
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-08-05 Roger Sayle
gcc/ChangeLog
* config/i386/i386-expand.cc (ix86_expand_v2di_ashiftrt): New
make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline? If the testcases need to be
tweaked for non-IEEE targets (the transformations themselves should
be portable to VAX and IBM floating point formats) hopefully that
can be done as follow-up patches
/pipermail/gcc-patches/2024-July/657881.html
[which I'm sad to see is taking a while to review/get approved].
Ok for mainline?
2024-07-27 Roger Sayle
gcc/ChangeLog
* config/nvptx/nptx.md (UNSPEC_COPYSIGN): No longer required.
(UNSPEC_ISFINITE): New UNSPEC.
(
https://gcc.gnu.org/g:928116e94a5a8a995dffd926af58abfa7286e78e
commit r15-2359-g928116e94a5a8a995dffd926af58abfa7286e78e
Author: Roger Sayle
Date: Sat Jul 27 15:16:19 2024 +0100
Fold ctz(-x) and ctz(abs(x)) as ctz(x) in match.pd.
The subject line pretty much says it all; the
with no new failures. Ok for mainline?
2024-07-23 Roger Sayle
gcc/ChangeLog
* match.pd (ctz (-X) => ctz (X)): New simplification.
gcc/testsuite/ChangeLog
* gcc.dg/fold-ctz-1.c: New test case.
Thanks in advance,
Roger
--
diff --git a/gcc/match.pd b/gcc/match.pd
index 6818856..
#x27;s no harm in (also) confirming that it
exists in g++_include_flags.
This patch has been tested on x86_64-pc-linux-gnu (where it allows
a cross-compiler to arc-linux to produce g++ compilation results).
Ok for mainline?
2024-07-22 Roger Sayle
gcc/testsuite/ChangeLog
* lib/g++.
opsys, is anyone able to test these changes?
Thanks in advance.
2024-07-22 Roger Sayle
gcc/ChangeLog
* config/arc/arc-protos.h (output_rlc_loop): Prototype here.
(arc_split_rlc): Prototype here.
* config/arc/arc.cc (output_rlc_loop): Output a zero-overhead
loop o
https://gcc.gnu.org/g:030186cabe8128e752619e101768cf8823a42c38
commit r15-2132-g030186cabe8128e752619e101768cf8823a42c38
Author: Roger Sayle
Date: Thu Jul 18 08:27:36 2024 +0100
Implement a -ftrapping-math/-fsignaling-nans TODO in match.pd.
I've been investigating some (fl
e?
2024-07-17 Roger Sayle
gcc/ChangeLog
* match.pd ((FTYPE) N CMP CST): Only worry about exceptions with
flag_trapping_math, and about signaling NaNs with HONOR_SNANS.
gcc/testsuite/ChangeLog
* c-c++-common/pr57371-4.c: Update comment.
* c-c++-common/pr57371-5
Hi Jørgen,
Awesome. Very many thanks for the speedy fix.
Roger
--
> -Original Message-
> From: Jørgen Kvalsvik
> Sent: 14 July 2024 20:46
> To: gcc-patches@gcc.gnu.org
> Cc: jeffreya...@gmail.com; ro...@nextmovesoftware.com; Jørgen Kvalsvik
>
> Subject: [PATCH] Use foreach, not lmap,
https://gcc.gnu.org/g:df9451936c6c9e4faea371e3f188e1fc6b6d39e3
commit r15-2053-gdf9451936c6c9e4faea371e3f188e1fc6b6d39e3
Author: Roger Sayle
Date: Tue Jul 16 07:58:28 2024 +0100
PR tree-optimization/114661: Generalize MULT_EXPR recognition in match.pd.
This patch resolves PR tree
https://gcc.gnu.org/g:74e6dfb23163c2dd670d1d60fbf4c782e0b44b94
commit r15-2027-g74e6dfb23163c2dd670d1d60fbf4c782e0b44b94
Author: Roger Sayle
Date: Sun Jul 14 17:22:27 2024 +0100
i386: Tweak i386-expand.cc to restore bootstrap on RHEL.
This is a minor change to restore bootstrap
Im seeing (dejagnu) testsuite problems from this (recent) patch.
Running /home/roger/GCC/patchem/gcc/testsuite/gcc.misc-tests/gcov.exp ...
ERROR: (DejaGnu) proc "lmap key { snd } {
if { $key in $seen } continue
set key
}" does not exist.
The error code is NONE
The info on th
ke bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures (from this change). Ok for mainline?
2024-07-14 Roger Sayle
* config/i386/i386-expand.cc (ix86_expand_fp_absneg_operator):
Use E_?Fmode enumeration constants in switch statement.
tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-07-14 Roger Sayle
Richard Biener
gcc/ChangeLog
PR tree-optimization/114661
* match.pd ((X*C1)|(X*C2) to
https://gcc.gnu.org/g:6b5d263f2c90c3e22cdf576970c94bca268c5296
commit r15-2000-g6b5d263f2c90c3e22cdf576970c94bca268c5296
Author: Roger Sayle
Date: Fri Jul 12 12:30:56 2024 +0100
i386: Some AVX512 ternlog expansion refinements.
This patch replaces the calls to force_reg in
line?
2024-07-11 Roger Sayle
Hongtao Liu
gcc/ChangeLog
* config/i386/i386-expand.cc (ix86_broadcast_from_constant):
Use CONST_VECTOR_P instead of comparison against GET_CODE.
(ix86_gen_bcst_mem): Likewise.
(ix86_ternlog_le
ns@16 cycles
This patch has been minimally tested by building a cross-compiler
to arc-linux hosted on x86_64-pc-linux-gnu where there are no new
failures from "make -k check" in the compile-only tests.
Ok for mainline (after 3rd-party testing)?
2024-07-11 Roger Sayle
gcc/ChangeLog
s
4.123190 seconds
So about a 3.7x performance improvement.
This patch has been tested with make and make -k check for nvptx-none
hosted on x86_64-pc-linux-gnu with no new failures. Ok for mainline?
2024-07-11 Roger Sayle
gcc/ChangeLog
* config/nvptx/nvptx.cc (nvptx_rtx_size_costs): New f
t
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-07-09 Roger Sayle
gcc/ChangeLog
PR tree-optimization/114661
* match.pd ((X*C1)|(X*C2
}
with no new failures. Ok for mainline?
2024-07-07 Roger Sayle
gcc/ChangeLog
* config/i386/i386-expand.cc (ix86_broadcast_from_constant):
Use CONST_VECTOR_P instead of comparison against GET_CODE.
(ix86_gen_bcst_mem): Likewise.
(ix86_ternlog_leaf_p): Likewise
https://gcc.gnu.org/g:9a7e3f57e1ab8e6e4cf5ea3c0998aa50c6220579
commit r15-1869-g9a7e3f57e1ab8e6e4cf5ea3c0998aa50c6220579
Author: Roger Sayle
Date: Sat Jul 6 05:24:39 2024 +0100
PR target/115751: Avoid force_reg in ix86_expand_ternlog.
This patch fixes a problem with splitting of
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-07-04 Roger Sayle
gcc/ChangeLog
PR target/115751
* config/i386/i386-expand.c (ix86_expand_t
https://gcc.gnu.org/g:727f8b142b7d5442af6c2e903293abc367a8de5f
commit r15-1835-g727f8b142b7d5442af6c2e903293abc367a8de5f
Author: Roger Sayle
Date: Thu Jul 4 07:31:17 2024 +0100
i386: Add additional variant of bswaphisi2_lowpart peephole2.
This patch adds an additional variation
$8, %di
jmp ext
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-07-01 Roger Sayle
gcc/ChangeLog
* config/i386/i386.md (bswaphisi2_lowpa
https://gcc.gnu.org/g:589865a8e4f6bd26c622ea0ee0a38565a0d42e80
commit r15-1752-g589865a8e4f6bd26c622ea0ee0a38565a0d42e80
Author: Roger Sayle
Date: Mon Jul 1 12:21:20 2024 +0100
testsuite: Fix -m32 gcc.target/i386/pr102464-vrndscaleph.c on RedHat.
This patch fixes the 4 FAILs of
https://gcc.gnu.org/g:142b5263b18be96e5d9ce406ad2c1b6ab35c190f
commit r15-1751-g142b5263b18be96e5d9ce406ad2c1b6ab35c190f
Author: Roger Sayle
Date: Mon Jul 1 12:18:26 2024 +0100
i386: Additional peephole2 to use lea in round-up integer division.
A common idiom for implementing an
hange.
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-06-30 Roger Sayle
gcc/ChangeLog
* config/i386/sse.md (*vmov_constm1_pternlog_false_dep):
Hi Uros,
> On Sat, Jun 29, 2024 at 6:21 PM Roger Sayle
> wrote:
> > A common idiom for implementing an integer division that rounds
> > upwards is to write (x + y - 1) / y. Conveniently on x86, the two
> > additions to form the numerator can be performed by a single
ound
is to define __NO_MATH_INLINES before #include (or alternatively
use __builtin_floor, __builtin_ceil, etc.).
This patch has been tested on x86_64-pc-linux-gnu with make -k check,
with and without --target_board=unix{-m32}. Ok for mainline?
2024-06-30 Roger Sayle
gcc/testsuite/ChangeLog
inux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-06-29 Roger Sayle
gcc/ChangeLog
* config/i386/i386.md (peephole2): Transform two consecutive
additions into a 3-component lea if !TARGET
https://gcc.gnu.org/g:07e915913b6b3d4e6e210f6dbc8e7e0e8ea594c4
commit r15-1702-g07e915913b6b3d4e6e210f6dbc8e7e0e8ea594c4
Author: Roger Sayle
Date: Fri Jun 28 07:16:07 2024 +0100
i386: Handle sign_extend like zero_extend in *concatditi3_[346]
This patch generalizes some of the
https://gcc.gnu.org/g:5938cf021e95b40b040974c9cbe7860399247f7f
commit r15-1701-g5938cf021e95b40b040974c9cbe7860399247f7f
Author: Roger Sayle
Date: Fri Jun 28 07:12:53 2024 +0100
i386: Some additional AVX512 ternlog refinements.
This patch is another round of refinements to fine
.@ventanamicro.com; rdapp@gmail.com; gcc-patches@gcc.gnu.org;
> Tom de Vries ; Roger Sayle
> Subject: Re: nvptx vs. [PATCH] Add a late-combine pass [PR106594]
>
> Hi!
>
> On 2024-06-27T22:27:21+0200, I wrote:
> > On 2024-06-27T18:49:17+0200, I wrote:
> >> On 2023-10-
with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-06-27 Roger Sayle
gcc/ChangeLog
* config/i386/i386.md (*concat3_3): Change zero_extend
to any_extend in first operand to left shift by mode precision.
(*concat3_4): Likewise.
ently use decimal.
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-06-27 Roger Sayle
gcc/ChangeLog
* config/i386/i386-expand.cc (ix86_ternlo
https://gcc.gnu.org/g:d8b05aef77443e1d3d8f3f5d2c56ac49a503fee3
commit r15-1584-gd8b05aef77443e1d3d8f3f5d2c56ac49a503fee3
Author: Roger Sayle
Date: Mon Jun 24 15:34:03 2024 +0100
PR tree-optimization/113673: Avoid load merging when potentially trapping.
This patch fixes PR tree
sue is also described at
https://github.com/foss-for-synopsys-dwc-arc-processors/gcc/issues/110
Tested with a cross-compiler to arc-linux hosted on x86_64,
with no new (compile-only) regressions from make -k check.
Ok for mainline if this passes Claudiu's and/or Jeff's testing?
20
ke bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-06-21 Roger Sayle
Richard Biener
gcc/ChangeLog
PR tree-optimization/113673
* gimple-ssa-store-merging.cc (find_bswap_or_nop_lo
https://gcc.gnu.org/g:9a76db24e044c8058497051a652cca4228cbc8e9
commit r15-1502-g9a76db24e044c8058497051a652cca4228cbc8e9
Author: Roger Sayle
Date: Thu Jun 20 16:30:15 2024 +0100
i386: Allow all register_operand SUBREGs in x86_ternlog_idx.
This patch tweaks ix86_ternlog_idx to
ode V4SF.
This patch allows the recently added ternlog_operand to accept this case.
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-06-18 Roger Sayle
gcc/C
https://gcc.gnu.org/g:c129a34dc8e69f7b34cf72835aeba2cefbb8673a
commit r15-1306-gc129a34dc8e69f7b34cf72835aeba2cefbb8673a
Author: Roger Sayle
Date: Fri Jun 14 06:29:27 2024 +0100
i386: More use of m{32,64}bcst addressing modes with ternlog.
This patch makes more use of m32bcst and
ret// 1 = 42
total
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-06-12 Roger Sayle
gcc/ChangeLog
* config/i386/i38
https://gcc.gnu.org/g:a797398cfbc75899fdb7d97436c0c89c02b133c0
commit r15-1175-ga797398cfbc75899fdb7d97436c0c89c02b133c0
Author: Roger Sayle
Date: Tue Jun 11 09:31:34 2024 +0100
i386: PR target/115397: AVX512 ternlog vs. -m32 -fPIC constant pool.
This patch fixes PR target/115397
x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-06-10 Roger Sayle
gcc/ChangeLog
PR target/115397
* config/i386/i386-expand.cc (ix86_expand_te
https://gcc.gnu.org/g:e22b7f741ab54ff3a3f8a676ce9e7414fe174958
commit r15--ge22b7f741ab54ff3a3f8a676ce9e7414fe174958
Author: Roger Sayle
Date: Sat Jun 8 05:01:38 2024 +0100
analyzer: Restore g++ 4.8 bootstrap; use std::move to return
std::unique_ptr.
This patch restores
using "scl enable devetoolset-10") as host compilers.
Ok for mainline?
2024-06-07 Roger Sayle
gcc/analyzer/ChangeLog
* constraint-manager.cc (equiv_class::make_dump_widget): Use
std::move to return a std::unique_ptr.
(bounded_ranges_constraint::make_dump_wi
https://gcc.gnu.org/g:fb3e4c549d16d5050e10114439ad77149f33c597
commit r15-1101-gfb3e4c549d16d5050e10114439ad77149f33c597
Author: Roger Sayle
Date: Fri Jun 7 14:03:20 2024 +0100
i386: PR target/115351: RTX costs for *concatditi3 and *insvti_highpart.
This patch addresses PR target
https://gcc.gnu.org/g:ec985bc97a01577bca8307f986caba7ba7633cde
commit r15-1100-gec985bc97a01577bca8307f986caba7ba7633cde
Author: Roger Sayle
Date: Fri Jun 7 13:57:23 2024 +0100
i386: Improve handling of ternlog instructions in i386/sse.md
This patch improves the way that the x86
e?
2024-06-07 Roger Sayle
gcc/ChangeLog
PR target/115351
* config/i386/i386.cc (ix86_rtx_costs): Provide estimates for the
*concatditi3 and *insvti_highpart patterns, about two insns.
gcc/testsuite/ChangeLog
PR target/115351
* g++.target/i386/pr1153
https://gcc.gnu.org/g:a3b16e73a2d5b2d4d20ef6f2fd164cea633bbec8
commit r15-775-ga3b16e73a2d5b2d4d20ef6f2fd164cea633bbec8
Author: Roger Sayle
Date: Wed May 22 16:45:48 2024 +0100
i386: Correct insn_cost of movabsq.
This single line patch fixes a strange quirk/glitch in i386&#
e -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-05-22 Roger Sayle
gcc/ChangeLog
* config/i386/i386.cc (ix86_rtx_costs) :
A CONST_INT that isn't x86_64_immediate_operand requires an extra
(expensive) movabsq in
https://gcc.gnu.org/g:26df7b4684e201e66c09dd018603a248ddc5f437
commit r15-774-g26df7b4684e201e66c09dd018603a248ddc5f437
Author: Roger Sayle
Date: Wed May 22 13:48:52 2024 +0100
Avoid ICE in except.cc on targets that don't support exceptions.
A number of testcases currently
This patch has been tested on nvptx-none hosted on x86_64-pc-linux-gnu
with no new failures in the testsuite, and ~220 fewer FAILs.
Ok for mainline?
2024-05-22 Roger Sayle
gcc/ChangeLog
* except.cc (output_function_exception_table): Move call to
get_personality
https://gcc.gnu.org/g:1676ef6e91b902f592270e4bcf10b4fc342e200d
commit r15-648-g1676ef6e91b902f592270e4bcf10b4fc342e200d
Author: Roger Sayle
Date: Sun May 19 09:49:45 2024 +0100
nvptx: Correct pattern for popcountdi2 insn in nvptx.md.
The result of a POPCOUNT operation in RTL
64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-05-17 Roger Sayle
Hongtao Liu
gcc/ChangeLog
PR target/115021
* config/i386/i386-expand.cc (ix86_expand
inux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-05-12 Roger Sayle
gcc/ChangeLog
PR target/115021
* config/i386/i386-expand.cc (ix86_expand_args_builtin): Call
fixup_modeless_co
https://gcc.gnu.org/g:46077992180d6d86c86544df5e8cb943492d3b01
commit r15-390-g46077992180d6d86c86544df5e8cb943492d3b01
Author: Roger Sayle
Date: Sun May 12 16:27:22 2024 +0100
arm: Use utxb rN, rM, ror #8 to implement zero_extract on armv6.
Examining the code generated for the
https://gcc.gnu.org/g:f5a8cdc1ef5d6aa2de60849c23658ac5298df7bb
commit r15-366-gf5a8cdc1ef5d6aa2de60849c23658ac5298df7bb
Author: Roger Sayle
Date: Fri May 10 20:26:40 2024 +0100
i386: Improve V[48]QI shifts on AVX512/SSE4.1
The following one line patch improves the code generated
his weekend.
Thanks again,
Roger
> From: Hongtao Liu
> On Fri, May 10, 2024 at 6:26 AM Roger Sayle
> wrote:
> >
> >
> > The following one line patch improves the code generated for V8QI and
> > V4QI shifts when AV512BW and AVX512VL functionality is available.
&
ch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-05-09 Roger Sayle
gcc/ChangeLog
* config/i386/i386-expand.cc (ix86_expand_vecop_qihi_partial):
Don
https://gcc.gnu.org/g:f2449b55fb2d32fc4200667ba79847db31f6530d
commit r15-352-gf2449b55fb2d32fc4200667ba79847db31f6530d
Author: Roger Sayle
Date: Thu May 9 22:45:54 2024 +0100
Constant fold {-1,-1} << 1 in simplify-rtx.cc
This patch addresses a missed optimization opportun
https://gcc.gnu.org/g:79649a5dcd81bc05c0ba591068c9075de43bd417
commit r15-222-g79649a5dcd81bc05c0ba591068c9075de43bd417
Author: Roger Sayle
Date: Tue May 7 07:14:40 2024 +0100
PR target/106060: Improved SSE vector constant materialization on x86.
This patch resolves PR target
> From: Richard Biener
> On Thu, May 2, 2024 at 11:34 AM Roger Sayle
> wrote:
> >
> >
> > > From: Richard Biener On Fri, Apr 26,
> > > 2024 at 10:19 AM Roger Sayle
> > > wrote:
> > > >
> > > > This patch address
> From: Richard Biener
> On Fri, Apr 26, 2024 at 10:19 AM Roger Sayle
> wrote:
> >
> > This patch addresses PR middle-end/111701 where optimization of
> > signbit(x*x) using tree_nonnegative_p incorrectly eliminates a
> > floating point multiplication whe
> On Tue, Apr 30, 2024 at 10:23 AM Roger Sayle
> wrote:
> > Hi Richard,
> > Thanks for looking into this.
> >
> > It’s not the call to size_binop_loc (for CEIL_DIV_EXPR) that's
> > problematic, but the call to fold_convert_loc (loc, size_type_node,
which does
more of a tree traversal checking error_operand_p within the unary and binary
operators of an expression tree.
Please let me know what you think/recommend.
Best regards,
Roger
--
> -Original Message-
> From: Richard Biener
> Sent: 30 April 2024 08:38
> To: Roger Sayle
>
ng away) a CEIL_DIV_EXPR in the
common case that "char" is a single-byte. The current code relies on
the middle-end's tree folding to recognize that CEIL_DIV_EXPR of
integer_one_node is a no-op, that can be optimized away.
Ok for mainline?
2024-04-30 Roger Sayle
gcc/c-family/Chan
updating the
CFG is a part of the compiler that I'm less familiar with.
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-04-28 Roger Sayle
gcc/ChangeL
c-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-04-26 Roger Sayle
gcc/ChangeLog
PR middle-end/111701
* fold-const.cc (tree_binary_nonnegative_warnv_p) :
Split handling of flo
added/modified potentially contributed
to this lapse. Using lowpart_subreg should avoid/reduce confusion in
future.
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for ma
64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-02-05 Roger Sayle
gcc/ChangeLog
PR target/113690
* config/i386/i386-features.cc (timode_convert_cst): New helper
functi
ootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2023-01-30 Roger Sayle
gcc/ChangeLog
PR target/113560
* tree-ssa-math-opts.cc (is_widening_mult_rhs_p): Use range
information via tree_non_zero_bits to check i
This patch is a revised version of the fix for PR other/113336.
This patch has been tested on arm-linux-gnueabihf with --with-arch=armv6
with make bootstrap and make -k check where it fixes all of the FAILs in
libatomic. Ok for mainline?
2024-01-28 Roger Sayle
Victor Do
n now checks that VEC_SELECT or some funky (future)
rtx_code doesn't cause problems.
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline (in stage 1)?
2024-01-26 Roger Sa
no new failures. Ok for mainline (in stage 1)?
2024-01-25 Roger Sayle
Hongtao Liu
gcc/ChangeLog
PR target/106060
* config/i386/i386-expand.cc (enum ix86_vec_bcast_alg): New.
(struct ix86_vec_bcast_map_simode_t): New type for table below.
(ix86_vec
-level might lead to a code quality regression, if RTL
expansion doesn't know to lower it back to use PLUS on
those targets with lea but without rotate.
> From: Richard Biener
> Sent: 19 January 2024 11:04
> On Thu, Jan 18, 2024 at 8:55 PM Roger Sayle
> wrote:
> >
> > T
add2r1,r2,r1
j_s.d [blink]
add2r0,r3,r0
This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-01-18 Roger Sayle
gcc/ChangeLog
gnu with make bootstrap
and make -k check, both with and without --target_board=unix{-m32}
with no new failures. Ok for mainline?
2024-01-16 Roger Sayle
gcc/ChangeLog
PR target/106060
* config/i386/i386-expand.cc (enum ix86_vec_bcast_alg): New.
(struct ix86_vec_bcas
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