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| author | Jakub Jelinek <jakub@redhat.com> | 2021-06-11 12:58:22 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2021-06-11 12:58:22 +0200 |
| commit | a984da88a35b42f444d1f9eeba77aa520b950d35 (patch) | |
| tree | 5eba5bb9f1750ee5fa2e5a4c419bf933f98c9116 /gcc/fold-const.c | |
| parent | 1fa991d1d74cb1ce96c48ede70ae0be7a9683ce3 (diff) | |
| download | gcc-a984da88a35b42f444d1f9eeba77aa520b950d35.zip gcc-a984da88a35b42f444d1f9eeba77aa520b950d35.tar.gz gcc-a984da88a35b42f444d1f9eeba77aa520b950d35.tar.bz2 | |
i386: Fix up *vec_concat<mode>_0_1 [PR101007]
On Fri, Apr 23, 2021 at 12:53:58PM +0800, Hongtao Liu via Gcc-patches wrote:
> -(define_insn "*vec_concatv4si_0"
> - [(set (match_operand:V4SI 0 "register_operand" "=v,x")
> - (vec_concat:V4SI
> - (match_operand:V2SI 1 "nonimmediate_operand" "vm,?!*y")
> - (match_operand:V2SI 2 "const0_operand" " C,C")))]
> +(define_insn "*vec_concat<mode>_0"
> + [(set (match_operand:VI124_128 0 "register_operand" "=v,x")
> + (vec_concat:VI124_128
> + (match_operand:<ssehalfvecmode> 1 "nonimmediate_operand" "vm,?!*y")
> + (match_operand:<ssehalfvecmode> 2 "const0_operand" " C,C")))]
> "TARGET_SSE2"
> "@
> %vmovq\t{%1, %0|%0, %1}
> @@ -22154,6 +22157,24 @@ (define_insn "avx_vec_concat<mode>"
> (set_attr "prefix" "maybe_evex")
> (set_attr "mode" "<sseinsnmode>")])
>
> +(define_insn_and_split "*vec_concat<mode>_0"
> + [(set (match_operand:V 0 "register_operand")
> + (vec_select:V
> + (vec_concat:<ssedoublevecmode>
> + (match_operand:V 1 "nonimmediate_operand")
> + (match_operand:V 2 "const0_operand"))
> + (match_parallel 3 "movq_parallel"
> + [(match_operand 4 "const_int_operand")])))]
> + "ix86_pre_reload_split ()"
> + "#"
> + "&& 1"
> + [(set (match_dup 0)
> + (vec_concat:V (match_dup 1) (match_dup 5)))]
> +{
> + operands[1] = gen_lowpart (<ssehalfvecmode>mode, operands[1]);
> + operands[5] = CONST0_RTX (<ssehalfvecmode>mode);
> +})
This regressed the following testcase with -msse -mno-sse2.
The define_insn_and_split splits the permutation into *vec_concat<mode>_0
or *vec_concatv2di_0 insns which both have TARGET_SSE2 in their
conditions (for the former you can see it above), but the
define_insn_and_split matches always when the V mode's condition do,
which for V16QI/V8HI/V4SI/V2DI/V4SF modes is always (well, when those
modes are valid, which is TARGET_SSE).
2021-06-11 Jakub Jelinek <jakub@redhat.com>
PR target/101007
* config/i386/sse.md (*vec_concat<mode>_0_1): Require TARGET_SSE2.
* gcc.target/i386/sse-pr101007.c: New test.
Diffstat (limited to 'gcc/fold-const.c')
0 files changed, 0 insertions, 0 deletions