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| author | Tamar Christina <tamar.christina@arm.com> | 2023-11-09 14:02:21 +0000 |
|---|---|---|
| committer | Tamar Christina <tamar.christina@arm.com> | 2023-11-09 14:06:07 +0000 |
| commit | 2ea13fb9c0b56e9b8c0425d101cf81437a5200cf (patch) | |
| tree | b08b0df01641cb0d615d36171aac5f07f800d70c /libcpp/line-map.cc | |
| parent | f30ecd8050444fb902ab66b4600c590908861fdf (diff) | |
| download | gcc-2ea13fb9c0b56e9b8c0425d101cf81437a5200cf.zip gcc-2ea13fb9c0b56e9b8c0425d101cf81437a5200cf.tar.gz gcc-2ea13fb9c0b56e9b8c0425d101cf81437a5200cf.tar.bz2 | |
AArch64: Add special patterns for creating DI scalar and vector constant 1 << 63 [PR109154]
This adds a way to generate special sequences for creation of constants for
which we don't have single instructions sequences which would have normally
lead to a GP -> FP transfer or a literal load.
The patch starts out by adding support for creating 1 << 63 using fneg (mov 0).
gcc/ChangeLog:
PR tree-optimization/109154
* config/aarch64/aarch64-protos.h (aarch64_simd_special_constant_p,
aarch64_maybe_generate_simd_constant): New.
* config/aarch64/aarch64-simd.md (*aarch64_simd_mov<VQMOV:mode>,
*aarch64_simd_mov<VDMOV:mode>): Add new coden for special constants.
* config/aarch64/aarch64.cc (aarch64_extract_vec_duplicate_wide_int):
Take optional mode.
(aarch64_simd_special_constant_p,
aarch64_maybe_generate_simd_constant): New.
* config/aarch64/aarch64.md (*movdi_aarch64): Add new codegen for
special constants.
* config/aarch64/constraints.md (Dx): new.
gcc/testsuite/ChangeLog:
PR tree-optimization/109154
* gcc.target/aarch64/fneg-abs_1.c: Updated.
* gcc.target/aarch64/fneg-abs_2.c: Updated.
* gcc.target/aarch64/fneg-abs_4.c: Updated.
* gcc.target/aarch64/dbl_mov_immediate_1.c: Updated.
Diffstat (limited to 'libcpp/line-map.cc')
0 files changed, 0 insertions, 0 deletions