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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2021-11-03 12:51:41 +0000 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2021-11-03 13:46:05 +0000 |
| commit | a195c7270e4705a06a9aaade0d721d5f52ca2275 (patch) | |
| tree | abb0b6a8fb3ee012a7af5f3cdcb2cad0f044f30d /gcc/tree-vrp.c | |
| parent | 4096eb50d108a9ccef134f2e891c751b1cc9f6b2 (diff) | |
| download | gcc-a195c7270e4705a06a9aaade0d721d5f52ca2275.zip gcc-a195c7270e4705a06a9aaade0d721d5f52ca2275.tar.gz gcc-a195c7270e4705a06a9aaade0d721d5f52ca2275.tar.bz2 | |
AArch64: Improve GOT addressing
Improve GOT addressing by treating the instructions as a pair. This reduces
register pressure and improves code quality significantly. SPECINT2017
improves by 0.6% with -fPIC and codesize is 0.73% smaller. Perlbench has
0.9% smaller codesize, 1.5% fewer executed instructions and is 1.8% faster
on Neoverse N1.
ChangeLog:
2021-11-02 Wilco Dijkstra <wdijkstr@arm.com>
* config/aarch64/aarch64.md (movsi): Add alternative for GOT accesses.
(movdi): Likewise.
(ldr_got_small_<mode>): Remove pattern.
(ldr_got_small_sidi): Likewise.
* config/aarch64/aarch64.c (aarch64_load_symref_appropriately): Keep
GOT accesses as moves.
(aarch64_print_operand): Correctly print got_lo12 in L specifier.
(aarch64_mov_operand_p): Make GOT accesses valid move operands.
* config/aarch64/constraints.md: Add new constraint Usw for GOT access.
Diffstat (limited to 'gcc/tree-vrp.c')
0 files changed, 0 insertions, 0 deletions