From: Michael Meissner <meissner@linux.ibm.com>
To: Michael Meissner <meissner@linux.ibm.com>,
gcc-patches@gcc.gnu.org,
Segher Boessenkool <segher@kernel.crashing.org>,
"Kewen.Lin" <linkw@linux.ibm.com>,
David Edelsohn <dje.gcc@gmail.com>,
Peter Bergner <bergner@linux.ibm.com>,
Will Schmidt <will_schmidt@vnet.ibm.com>
Subject: [PATCH 2/6] PowerPC: Make -mcpu=future enable -mblock-ops-vector-pair.
Date: Wed, 9 Nov 2022 21:45:39 -0500 [thread overview]
Message-ID: <Y2xl0/RvJdmvchfJ@toto.the-meissners.org> (raw)
In-Reply-To: <Y2xlRIxBIy3VG/xL@toto.the-meissners.org>
This patch enables generating load and store vector pair instructions when
doing certain memory copy operations when -mcpu=future is used. In doing tests
on power10, it was determined that using these instructions were problematical
in a few cases, so we disabled generating them by default. This patch
re-enabled generating these instructions if -mcpu=future is used.
The patches have been tested on the following platforms. I added the patches
for PR target/107299 that I submitted on November 2nd before doing the builds so
that GCC would build on systems using IEEE 128-bit long double.
* https://gcc.gnu.org/pipermail/gcc-patches/2022-November/604834.html
There were no regressions with doing bootstrap builds and running the regression
tests:
1) Power10 LE using --with-cpu=power10 --with-long-double-format=ieee;
2) Power10 LE using --with-cpu=power10 --with-long-double-format=ibm;
3) Power9 LE using --with-cpu=power9 --with-long-double-format=ibm; and
4) Power8 BE using --with-cpu=power8 (both 32-bit & 64-bit tested).
Can I check this patch into the GCC 13 master branch?
2022-11-09 Michael Meissner <meissner@linux.ibm.com>
gcc/
* config/rs6000/rs6000-cpus.def (ISA_FUTURE_MASKS): Add
-mblock-ops-vector-pair.
(POWERPC_MASKS): Likewise.
---
gcc/config/rs6000/rs6000-cpus.def | 2 ++
1 file changed, 2 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-cpus.def b/gcc/config/rs6000/rs6000-cpus.def
index 5eac7d97e65..e8df7927055 100644
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -89,6 +89,7 @@
/* Flags for a potential future processor that may or may not be delivered. */
#define ISA_FUTURE_MASKS (ISA_3_1_MASKS_SERVER \
+ | OPTION_MASK_BLOCK_OPS_VECTOR_PAIR \
| OPTION_MASK_FUTURE)
/* Flags that need to be turned off if -mno-power9-vector. */
@@ -126,6 +127,7 @@
/* Mask of all options to set the default isa flags based on -mcpu=<xxx>. */
#define POWERPC_MASKS (OPTION_MASK_ALTIVEC \
+ | OPTION_MASK_BLOCK_OPS_VECTOR_PAIR \
| OPTION_MASK_CMPB \
| OPTION_MASK_CRYPTO \
| OPTION_MASK_DFP \
--
2.38.1
--
Michael Meissner, IBM
PO Box 98, Ayer, Massachusetts, USA, 01432
email: meissner@linux.ibm.com
next prev parent reply other threads:[~2022-11-10 2:45 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-10 2:43 [PATCH 0/6] PowerPC Dense Math prelimary support (-mcpu=future) Michael Meissner
2022-11-10 2:44 ` [PATCH 1/6] PowerPC: Add -mcpu=future Michael Meissner
2022-11-11 21:07 ` Peter Bergner
2023-01-20 21:05 ` Ping: " Michael Meissner
2023-01-27 20:00 ` Segher Boessenkool
2022-11-10 2:45 ` Michael Meissner [this message]
2023-01-20 21:07 ` Ping: [PATCH 2/6] PowerPC: Make -mcpu=future enable -mblock-ops-vector-pair Michael Meissner
2022-11-10 2:46 ` [PATCH 3/6] PowerPC: Add support for accumulators in DMR registers Michael Meissner
2023-01-20 21:08 ` Ping: " Michael Meissner
2022-11-10 2:50 ` [PATCH 4/6] PowerPC: Make MMA insns support " Michael Meissner
2023-01-20 21:10 ` Ping: " Michael Meissner
2022-11-10 2:51 ` [PATCH 5/6] PowerPC: Switch to dense math names for all MMA operations Michael Meissner
2023-01-20 21:11 ` Ping: " Michael Meissner
2022-11-10 2:52 ` [PATCH 6/6] PowerPC: Add support for 1,024 bit DMR registers Michael Meissner
2023-01-20 21:12 ` Ping: " Michael Meissner
2022-11-12 5:07 ` [PATCH 7] PowerPC: Add -mcpu=future saturating subtract built-ins Michael Meissner
2023-01-20 21:13 ` Ping: " Michael Meissner
2022-11-12 5:10 ` [PATCH 8] PowerPC: Support load/store vector with right length Michael Meissner
2023-01-20 21:15 ` Patch: " Michael Meissner
2023-01-27 19:59 ` [PATCH 0/6] PowerPC Dense Math prelimary support (-mcpu=future) Segher Boessenkool
2023-01-28 7:29 ` Michael Meissner
2023-01-30 2:52 ` Michael Meissner
2023-02-01 3:31 ` Michael Meissner
2023-02-02 0:05 ` Segher Boessenkool
2023-10-18 23:55 [PATCH 0/6] PowerPC Future patches Michael Meissner
2023-10-19 0:00 ` [PATCH 2/6] PowerPC: Make -mcpu=future enable -mblock-ops-vector-pair Michael Meissner
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