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| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-11-16 11:11:47 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-11-16 11:11:47 +0000 |
| commit | 217ccab8f46ca5b260319e7b71b421daec6d11c8 (patch) | |
| tree | a3ef07b19bc12a62c9612d4bf2d8179469013b49 /gcc/tree-loop-distribution.c | |
| parent | e58703e2c1b09d39714740e00933d32df965de32 (diff) | |
| download | gcc-217ccab8f46ca5b260319e7b71b421daec6d11c8.zip gcc-217ccab8f46ca5b260319e7b71b421daec6d11c8.tar.gz gcc-217ccab8f46ca5b260319e7b71b421daec6d11c8.tar.bz2 | |
[AArch64] Pattern-match SVE extending loads
This patch pattern-matches a partial SVE load followed by a sign or zero
extension into an extending load. (The partial load is already an
extending load; we just don't rely on the upper bits of the elements.)
Nothing yet uses the extra LDFF1 and LDNF1 combinations, but it seemed
more consistent to provide them, since I needed to update the pattern
to use a predicated extension anyway.
2019-11-16 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64-sve.md
(@aarch64_load_<ANY_EXTEND:optab><VNx8_WIDE:mode><VNx8_NARROW:mode>):
(@aarch64_load_<ANY_EXTEND:optab><VNx4_WIDE:mode><VNx4_NARROW:mode>)
(@aarch64_load_<ANY_EXTEND:optab><VNx2_WIDE:mode><VNx2_NARROW:mode>):
Combine into...
(@aarch64_load_<ANY_EXTEND:optab><SVE_HSDI:mode><SVE_PARTIAL_I:mode>):
...this new pattern, handling extension to partial modes as well
as full modes. Describe the extension as a predicated rather than
unpredicated extension.
(@aarch64_ld<fn>f1_<ANY_EXTEND:optab><VNx8_WIDE:mode><VNx8_NARROW:mode>)
(@aarch64_ld<fn>f1_<ANY_EXTEND:optab><VNx4_WIDE:mode><VNx4_NARROW:mode>)
(@aarch64_ld<fn>f1_<ANY_EXTEND:optab><VNx2_WIDE:mode><VNx2_NARROW:mode>):
Combine into...
(@aarch64_ld<fn>f1_<ANY_EXTEND:optab><SVE_HSDI:mode><SVE_PARTIAL_I:mode>):
...this new pattern, handling extension to partial modes as well
as full modes. Describe the extension as a predicated rather than
unpredicated extension.
* config/aarch64/aarch64-sve-builtins.cc
(function_expander::use_contiguous_load_insn): Add an extra
predicate for extending loads.
* config/aarch64/aarch64.c (aarch64_extending_load_p): New function.
(aarch64_sve_adjust_stmt_cost): Likewise.
(aarch64_add_stmt_cost): Use aarch64_sve_adjust_stmt_cost to adjust
the cost of SVE vector stmts.
gcc/testsuite/
* gcc.target/aarch64/sve/load_extend_1.c: New test.
* gcc.target/aarch64/sve/load_extend_2.c: Likewise.
* gcc.target/aarch64/sve/load_extend_3.c: Likewise.
* gcc.target/aarch64/sve/load_extend_4.c: Likewise.
* gcc.target/aarch64/sve/load_extend_5.c: Likewise.
* gcc.target/aarch64/sve/load_extend_6.c: Likewise.
* gcc.target/aarch64/sve/load_extend_7.c: Likewise.
* gcc.target/aarch64/sve/load_extend_8.c: Likewise.
* gcc.target/aarch64/sve/load_extend_9.c: Likewise.
* gcc.target/aarch64/sve/load_extend_10.c: Likewise.
* gcc.target/aarch64/sve/reduc_4.c: Add
--param aarch64-sve-compare-costs=0.
From-SVN: r278343
Diffstat (limited to 'gcc/tree-loop-distribution.c')
0 files changed, 0 insertions, 0 deletions