From 423c10d13d758766de13a2785268e196ea7e38d7 Mon Sep 17 00:00:00 2001 From: CentOS Sources Date: Thu, 27 Jan 2022 04:57:31 +0000 Subject: [PATCH] import gcc-8.5.0-8.el8 --- .../gcc8-aarch64-mtune-neoverse-512tvb.patch | 105 ++++++++++++++++++ SPECS/gcc.spec | 7 +- 2 files changed, 111 insertions(+), 1 deletion(-) create mode 100644 SOURCES/gcc8-aarch64-mtune-neoverse-512tvb.patch diff --git a/SOURCES/gcc8-aarch64-mtune-neoverse-512tvb.patch b/SOURCES/gcc8-aarch64-mtune-neoverse-512tvb.patch new file mode 100644 index 0000000..af0a049 --- /dev/null +++ b/SOURCES/gcc8-aarch64-mtune-neoverse-512tvb.patch @@ -0,0 +1,105 @@ +From 9c108bb84d3a2447dac730c455df658be0a2c751 Mon Sep 17 00:00:00 2001 +From: Richard Sandiford +Date: Tue, 17 Aug 2021 15:15:27 +0100 +Subject: [PATCH] aarch64: Add -mtune=neoverse-512tvb +To: gcc-patches@gcc.gnu.org + +This patch adds an option to tune for Neoverse cores that have +a total vector bandwidth of 512 bits (4x128 for Advanced SIMD +and a vector-length-dependent equivalent for SVE). This is intended +to be a compromise between tuning aggressively for a single core like +Neoverse V1 (which can be too narrow) and tuning for AArch64 cores +in general (which can be too wide). + +-mcpu=neoverse-512tvb is equivalent to -mcpu=neoverse-v1 +-mtune=neoverse-512tvb. + +gcc/ + * doc/invoke.texi: Document -mtune=neoverse-512tvb and + -mcpu=neoverse-512tvb. + * config/aarch64/aarch64-cores.def (neoverse-512tvb): New entry. + * config/aarch64/aarch64-tune.md: Regenerate. + +(cherry picked from commit 048039c49b96875144f67e7789fdea54abf7710b) +--- + gcc/config/aarch64/aarch64-cores.def | 1 + + gcc/config/aarch64/aarch64-tune.md | 2 +- + gcc/doc/invoke.texi | 25 ++++++++++++++++++++++--- + 3 files changed, 24 insertions(+), 4 deletions(-) + +diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def +index dfb839c01cc..f348d31e22e 100644 +--- a/gcc/config/aarch64/aarch64-cores.def ++++ b/gcc/config/aarch64/aarch64-cores.def +@@ -99,6 +99,7 @@ AARCH64_CORE("saphira", saphira, falkor, 8_3A, AARCH64_FL_FOR_ARCH8_3 + /* ARM ('A') cores. */ + AARCH64_CORE("zeus", zeus, cortexa57, 8_4A, AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_SVE | AARCH64_FL_RNG, neoversev1, 0x41, 0xd40, -1) + AARCH64_CORE("neoverse-v1", neoversev1, cortexa57, 8_4A, AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_SVE | AARCH64_FL_RNG, neoversev1, 0x41, 0xd40, -1) ++AARCH64_CORE("neoverse-512tvb", neoverse512tvb, cortexa57, 8_4A, AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_SVE | AARCH64_FL_RNG, neoversev1, INVALID_IMP, INVALID_CORE, -1) + + /* Armv8.5-A Architecture Processors. */ + AARCH64_CORE("neoverse-n2", neoversen2, cortexa57, 8_4A, AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_F16 | AARCH64_FL_SVE | AARCH64_FL_RNG, neoversen2, 0x41, 0xd49, -1) +diff --git a/gcc/config/aarch64/aarch64-tune.md b/gcc/config/aarch64/aarch64-tune.md +index 2d7c9aa4740..09b76480f0b 100644 +--- a/gcc/config/aarch64/aarch64-tune.md ++++ b/gcc/config/aarch64/aarch64-tune.md +@@ -1,5 +1,5 @@ + ;; -*- buffer-read-only: t -*- + ;; Generated automatically by gentune.sh from aarch64-cores.def + (define_attr "tune" +- "cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,thunderxt81,thunderxt83,xgene1,falkor,qdf24xx,exynosm1,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,ares,neoversen1,saphira,zeus,neoversev1,neoversen2,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55" ++ "cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,thunderxt81,thunderxt83,xgene1,falkor,qdf24xx,exynosm1,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,ares,neoversen1,saphira,zeus,neoversev1,neoverse512tvb,neoversen2,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55" + (const (symbol_ref "((enum attr_tune) aarch64_tune)"))) +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +index 78ca7738df2..68fda03281a 100644 +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -14772,9 +14772,9 @@ performance of the code. Permissible values for this option are: + @samp{generic}, @samp{cortex-a35}, @samp{cortex-a53}, @samp{cortex-a55}, + @samp{cortex-a57}, @samp{cortex-a72}, @samp{cortex-a73}, @samp{cortex-a75}, + @samp{cortex-a76}, @samp{ares}, @samp{neoverse-n1}, @samp{neoverse-n2}, +-@samp{neoverse-v1}, @samp{zeus}, @samp{exynos-m1}, @samp{falkor}, +-@samp{qdf24xx}, @samp{saphira}, @samp{xgene1}, @samp{vulcan}, @samp{thunderx}, +-@samp{thunderxt88}, @samp{thunderxt88p1}, @samp{thunderxt81}, ++@samp{neoverse-v1}, @samp{zeus}, @samp{neoverse-512tvb}, @samp{exynos-m1}, ++@samp{falkor}, @samp{qdf24xx}, @samp{saphira}, @samp{xgene1}, @samp{vulcan}, ++@samp{thunderx}, @samp{thunderxt88}, @samp{thunderxt88p1}, @samp{thunderxt81}, + @samp{thunderxt83}, @samp{thunderx2t99}, @samp{cortex-a57.cortex-a53}, + @samp{cortex-a72.cortex-a53}, @samp{cortex-a73.cortex-a35}, + @samp{cortex-a73.cortex-a53}, @samp{cortex-a75.cortex-a55}, +@@ -14785,6 +14785,15 @@ The values @samp{cortex-a57.cortex-a53}, @samp{cortex-a72.cortex-a53}, + @samp{cortex-a75.cortex-a55} specify that GCC should tune for a + big.LITTLE system. + ++The value @samp{neoverse-512tvb} specifies that GCC should tune ++for Neoverse cores that (a) implement SVE and (b) have a total vector ++bandwidth of 512 bits per cycle. In other words, the option tells GCC to ++tune for Neoverse cores that can execute 4 128-bit Advanced SIMD arithmetic ++instructions a cycle and that can execute an equivalent number of SVE ++arithmetic instructions per cycle (2 for 256-bit SVE, 4 for 128-bit SVE). ++This is more general than tuning for a specific core like Neoverse V1 ++but is more specific than the default tuning described below. ++ + Additionally on native AArch64 GNU/Linux systems the value + @samp{native} tunes performance to the host system. This option has no effect + if the compiler is unable to recognize the processor of the host system. +@@ -14814,6 +14823,16 @@ by @option{-mtune}). Where this option is used in conjunction + with @option{-march} or @option{-mtune}, those options take precedence + over the appropriate part of this option. + ++@option{-mcpu=neoverse-512tvb} is special in that it does not refer ++to a specific core, but instead refers to all Neoverse cores that ++(a) implement SVE and (b) have a total vector bandwidth of 512 bits ++a cycle. Unless overridden by @option{-march}, ++@option{-mcpu=neoverse-512tvb} generates code that can run on a ++Neoverse V1 core, since Neoverse V1 is the first Neoverse core with ++these properties. Unless overridden by @option{-mtune}, ++@option{-mcpu=neoverse-512tvb} tunes code in the same way as for ++@option{-mtune=neoverse-512tvb}. ++ + @item -moverride=@var{string} + @opindex moverride + Override tuning decisions made by the back-end in response to a +-- +2.25.1 + diff --git a/SPECS/gcc.spec b/SPECS/gcc.spec index 97da7c2..891f941 100644 --- a/SPECS/gcc.spec +++ b/SPECS/gcc.spec @@ -4,7 +4,7 @@ %global gcc_major 8 # Note, gcc_release must be integer, if you want to add suffixes to # %%{release}, append them after %%{gcc_release} on Release: line. -%global gcc_release 7 +%global gcc_release 8 %global nvptx_tools_gitrev c28050f60193b3b95a18866a96f03334e874e78f %global nvptx_newlib_gitrev aadc8eb0ec43b7cd0dd2dfb484bae63c8b05ef24 %global _unpackaged_files_terminate_build 0 @@ -282,6 +282,7 @@ Patch21: gcc8-rh1981822.patch Patch22: gcc8-Wbidi-chars.patch Patch23: gcc8-pr96796.patch Patch24: gcc8-pch-tweaks.patch +Patch25: gcc8-aarch64-mtune-neoverse-512tvb.patch Patch30: gcc8-rh1668903-1.patch Patch31: gcc8-rh1668903-2.patch @@ -865,6 +866,7 @@ to NVidia PTX capable devices if available. %patch22 -p1 -b .bidi~ %patch23 -p1 -b .pr96796~ %patch24 -p1 -b .pch-tweaks~ +%patch25 -p1 -b .neoverse~ %patch30 -p0 -b .rh1668903-1~ %patch31 -p0 -b .rh1668903-2~ @@ -3181,6 +3183,9 @@ fi %endif %changelog +* Mon Jan 24 2022 Marek Polacek 8.5.0-8 +- aarch64: Add -mtune=neoverse-512tvb (#1845932) + * Fri Dec 10 2021 Marek Polacek 8.5.0-7 - backport PCH tweaks (#2030878)