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* [gcc r14-8384] aarch64: Re-enable ldp/stp fusion pass
@ 2024-01-24 9:23 Alex Coplan
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From: Alex Coplan @ 2024-01-24 9:23 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:da9647e98aa289ba3aba41cf5bbe14d0f5f27e77
commit r14-8384-gda9647e98aa289ba3aba41cf5bbe14d0f5f27e77
Author: Alex Coplan <alex.coplan@arm.com>
Date: Wed Jan 24 09:22:19 2024 +0000
aarch64: Re-enable ldp/stp fusion pass
Since, to the best of my knowledge, all reported regressions related to
the ldp/stp fusion pass have now been fixed, and PGO+LTO bootstrap with
--enable-languages=all is working again with the passes enabled, this
patch turns the passes back on by default, as agreed with Jakub here:
https://gcc.gnu.org/pipermail/gcc-patches/2024-January/642478.html
gcc/ChangeLog:
* config/aarch64/aarch64.opt (-mearly-ldp-fusion): Set default
to 1.
(-mlate-ldp-fusion): Likewise.
Diff:
---
gcc/config/aarch64/aarch64.opt | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gcc/config/aarch64/aarch64.opt b/gcc/config/aarch64/aarch64.opt
index c495cb34fbf..ceed5cdb201 100644
--- a/gcc/config/aarch64/aarch64.opt
+++ b/gcc/config/aarch64/aarch64.opt
@@ -290,12 +290,12 @@ Target Var(aarch64_track_speculation)
Generate code to track when the CPU might be speculating incorrectly.
mearly-ldp-fusion
-Target Var(flag_aarch64_early_ldp_fusion) Optimization Init(0)
+Target Var(flag_aarch64_early_ldp_fusion) Optimization Init(1)
Enable the copy of the AArch64 load/store pair fusion pass that runs before
register allocation.
mlate-ldp-fusion
-Target Var(flag_aarch64_late_ldp_fusion) Optimization Init(0)
+Target Var(flag_aarch64_late_ldp_fusion) Optimization Init(1)
Enable the copy of the AArch64 load/store pair fusion pass that runs after
register allocation.
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2024-01-24 9:23 [gcc r14-8384] aarch64: Re-enable ldp/stp fusion pass Alex Coplan
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