| commit | bbdb72ba29ead4931a6cfff023c0485fa25e648b | |
| author | Wilco Dijkstra <wilco.dijkstra@arm.com> | |
| Fri, 1 Dec 2023 15:05:53 +0000 (1 15:05 +0000) | ||
| committer | Wilco Dijkstra <wilco.dijkstra@arm.com> | |
| Fri, 15 Dec 2023 13:19:40 +0000 (15 13:19 +0000) | ||
| tree | 64ee18aefebb804cdd9c9cf39cbbc2c56447936a | treesnapshot (tar.gz zip) |
| parent | 5ddf651ad91d34b754dbe280e5ab2b19cf90f8ee | commitdiff |
AArch64: Add inline memmove expansion
Add support for inline memmove expansions. The generated code is identical
as for memcpy, except that all loads are emitted before stores rather than
being interleaved. The maximum size is 256 bytes which requires at most 16
registers.
gcc/ChangeLog:
* config/aarch64/aarch64.opt (aarch64_mops_memmove_size_threshold):
Change default.
* config/aarch64/aarch64.md (cpymemdi): Add a parameter.
(movmemdi): Call aarch64_expand_cpymem.
* config/aarch64/aarch64.cc (aarch64_copy_one_block): Rename function,
simplify, support storing generated loads/stores.
(aarch64_expand_cpymem): Support expansion of memmove.
* config/aarch64/aarch64-protos.h (aarch64_expand_cpymem): Add bool arg.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/memmove.c: Add new test.
* gcc.target/aarch64/memmove2.c: Likewise.
Add support for inline memmove expansions. The generated code is identical
as for memcpy, except that all loads are emitted before stores rather than
being interleaved. The maximum size is 256 bytes which requires at most 16
registers.
gcc/ChangeLog:
* config/aarch64/aarch64.opt (aarch64_mops_memmove_size_threshold):
Change default.
* config/aarch64/aarch64.md (cpymemdi): Add a parameter.
(movmemdi): Call aarch64_expand_cpymem.
* config/aarch64/aarch64.cc (aarch64_copy_one_block): Rename function,
simplify, support storing generated loads/stores.
(aarch64_expand_cpymem): Support expansion of memmove.
* config/aarch64/aarch64-protos.h (aarch64_expand_cpymem): Add bool arg.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/memmove.c: Add new test.
* gcc.target/aarch64/memmove2.c: Likewise.