diff options
| author | Jiahao Xu <xujiahao@loongson.cn> | 2024-01-16 10:23:20 +0800 |
|---|---|---|
| committer | Lulu Cheng <chenglulu@loongson.cn> | 2024-01-26 16:21:47 +0800 |
| commit | e3a9b77d732de83877a9ed5914e6d429a65e0bf7 (patch) | |
| tree | 9ab354072f023fd52a14ad20799f713291f9cb44 /gcc/config/loongarch | |
| parent | dddafe948230b4895f8d4371eee7996fb2dba44a (diff) | |
| download | gcc-e3a9b77d732de83877a9ed5914e6d429a65e0bf7.zip gcc-e3a9b77d732de83877a9ed5914e6d429a65e0bf7.tar.gz gcc-e3a9b77d732de83877a9ed5914e6d429a65e0bf7.tar.bz2 | |
LoongArch: Split vec_selects of bottom elements into simple move
For below pattern, can be treated as a simple move because floating point
and vector share a common register on loongarch64.
(set (reg/v:SF 32 $f0 [orig:93 res ] [93])
(vec_select:SF (reg:V8SF 32 $f0 [115])
(parallel [
(const_int 0 [0])
])))
gcc/ChangeLog:
* config/loongarch/lasx.md (vec_extract<mode>_0):
New define_insn_and_split patten.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/vect-extract.c: New test.
Diffstat (limited to 'gcc/config/loongarch')
| -rw-r--r-- | gcc/config/loongarch/lasx.md | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md index 5d478b9..e2115ff 100644 --- a/gcc/config/loongarch/lasx.md +++ b/gcc/config/loongarch/lasx.md @@ -746,6 +746,21 @@ DONE; }) +(define_insn_and_split "vec_extract<mode>_0" + [(set (match_operand:<UNITMODE> 0 "register_operand" "=f") + (vec_select:<UNITMODE> + (match_operand:FLASX 1 "register_operand" "f") + (parallel [(const_int 0)])))] + "ISA_HAS_LSX" + "#" + "&& reload_completed" + [(set (match_dup 0) (match_dup 1))] +{ + operands[1] = gen_rtx_REG (<UNITMODE>mode, REGNO (operands[1])); +} + [(set_attr "move_type" "fmove") + (set_attr "mode" "<UNITMODE>")]) + (define_expand "vec_perm<mode>" [(match_operand:LASX 0 "register_operand") (match_operand:LASX 1 "register_operand") |