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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2017-06-05 08:49:59 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2017-06-05 08:49:59 +0000 |
| commit | 279dc4b464e3cc207b1729d8a392240430c57f42 (patch) | |
| tree | 9561d1b7f733a9bfea072d79b805437a6d5f2a96 /gcc/config/aarch64/predicates.md | |
| parent | e49d8b68a2330971c75ba7ff625c770e6f2ce2b9 (diff) | |
| download | gcc-279dc4b464e3cc207b1729d8a392240430c57f42.zip gcc-279dc4b464e3cc207b1729d8a392240430c57f42.tar.gz gcc-279dc4b464e3cc207b1729d8a392240430c57f42.tar.bz2 | |
[AArch64] Use SUBS for parallel subtraction and comparison with immediate
* config/aarch64/aarch64.md (sub<mode>3_compare1_imm): New define_insn.
(peephole2): New peephole2 to emit the above.
* config/aarch64/predicates.md (aarch64_sub_immediate): New predicate.
* gcc.target/aarch64/subs_compare_2.c: New test.
From-SVN: r248870
Diffstat (limited to 'gcc/config/aarch64/predicates.md')
| -rw-r--r-- | gcc/config/aarch64/predicates.md | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/config/aarch64/predicates.md b/gcc/config/aarch64/predicates.md index 8e3ea9b..cd7ded9 100644 --- a/gcc/config/aarch64/predicates.md +++ b/gcc/config/aarch64/predicates.md @@ -77,6 +77,10 @@ (define_predicate "aarch64_fp_vec_pow2" (match_test "aarch64_vec_fpconst_pow_of_2 (op) > 0")) +(define_predicate "aarch64_sub_immediate" + (and (match_code "const_int") + (match_test "aarch64_uimm12_shift (-INTVAL (op))"))) + (define_predicate "aarch64_plus_immediate" (and (match_code "const_int") (ior (match_test "aarch64_uimm12_shift (INTVAL (op))") |