The following typo was corrected, updated patch file below: /* Fuse CMP and CSET. */ - if (aarch64_fusion_enabled_p (AARCH64_FUSE_CMP_CSEL) + if (aarch64_fusion_enabled_p (AARCH64_FUSE_CMP_CSET)
0001-aarch64-Fuse-CMP-CSEL-and-CMP-CSET-for-mcpu-neoverse.patch
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> On 23 Jul 2024, at 12:16, Jennifer Schmitz <jschm...@nvidia.com> wrote: > > According to the Neoverse V2 Software Optimization Guide (section 4.14), the > instruction pairs CMP+CSEL and CMP+CSET can be fused, which had not been > implemented so far. This patch implements and tests the two fusion pairs. > > The patch was bootstrapped and regtested on aarch64-linux-gnu, no regression. > There was also no non-noise impact on SPEC CPU2017 benchmark. > OK for mainline? > > Signed-off-by: Jennifer Schmitz <jschm...@nvidia.com> > > gcc/ > > * config/aarch64/aarch64.cc (aarch_macro_fusion_pair_p): Implement > fusion logic. > * config/aarch64/aarch64-fusion-pairs.def (cmp+csel): New entry. > (cmp+cset): Likewise. > * config/aarch64/tuning_models/neoversev2.h: Enable logic in > field fusible_ops. > > gcc/testsuite/ > > * gcc.target/aarch64/fuse_cmp_csel.c: New test. > * gcc.target/aarch64/fuse_cmp_cset.c: Likewise. > <0001-aarch64-Fuse-CMP-CSEL-and-CMP-CSET-for-mcpu-neoverse.patch>
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