From a016c8cb03e2b3175e48b2f81d81ad39abef5b54 Mon Sep 17 00:00:00 2001
From: Jan Beulich <jbeulich@suse.com>
Date: Mon, 7 Aug 2023 11:53:17 +0200
Subject: [PATCH] x86: drop redundant "prefix_data16" attributes

The attribute defaults to 1 for TI-mode insns of type sselog, sselog1,
sseiadd, sseimul, and sseishft.

In *<code>v8hi3 [smaxmin] and *<code>v16qi3 [umaxmin] also drop the
similarly stray "prefix_extra" at this occasion. These two max/min
flavors are encoded in 0f space.

gcc/

	* config/i386/mmx.md (*mmx_pinsrd): Drop "prefix_data16".
	(*mmx_pinsrb): Likewise.
	(*mmx_pextrb): Likewise.
	(*mmx_pextrb_zext): Likewise.
	(mmx_pshufbv8qi3): Likewise.
	(mmx_pshufbv4qi3): Likewise.
	(mmx_pswapdv2si2): Likewise.
	(*pinsrb): Likewise.
	(*pextrb): Likewise.
	(*pextrb_zext): Likewise.
	* config/i386/sse.md (*sse4_1_mulv2siv2di3<mask_name>): Likewise.
	(*sse2_eq<mode>3): Likewise.
	(*sse2_gt<mode>3): Likewise.
	(<sse2p4_1>_pinsr<ssemodesuffix>): Likewise.
	(*vec_extract<mode>): Likewise.
	(*vec_extract<PEXTR_MODE12:mode>_zext): Likewise.
	(*vec_extractv16qi_zext): Likewise.
	(ssse3_ph<plusminus_mnemonic>wv8hi3): Likewise.
	(ssse3_pmaddubsw128): Likewise.
	(*<ssse3_avx2>_pmulhrsw<mode>3<mask_name>): Likewise.
	(<ssse3_avx2>_pshufb<mode>3<mask_name>): Likewise.
	(<ssse3_avx2>_psign<mode>3): Likewise.
	(<ssse3_avx2>_palignr<mode>): Likewise.
	(*abs<mode>2): Likewise.
	(sse4_2_pcmpestr): Likewise.
	(sse4_2_pcmpestri): Likewise.
	(sse4_2_pcmpestrm): Likewise.
	(sse4_2_pcmpestr_cconly): Likewise.
	(sse4_2_pcmpistr): Likewise.
	(sse4_2_pcmpistri): Likewise.
	(sse4_2_pcmpistrm): Likewise.
	(sse4_2_pcmpistr_cconly): Likewise.
	(vgf2p8affineinvqb_<mode><mask_name>): Likewise.
	(vgf2p8affineqb_<mode><mask_name>): Likewise.
	(vgf2p8mulb_<mode><mask_name>): Likewise.
	(*<code>v8hi3 [smaxmin]): Drop "prefix_data16" and
	"prefix_extra".
	(*<code>v16qi3 [umaxmin]): Likewise.
---
 gcc/config/i386/mmx.md | 10 ----------
 gcc/config/i386/sse.md | 34 ----------------------------------
 2 files changed, 44 deletions(-)

diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
index fcb0864e202a..f80dd6fde89c 100644
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -3863,7 +3863,6 @@
     }
 }
   [(set_attr "isa" "noavx,avx")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "type" "sselog")
    (set_attr "length_immediate" "1")
@@ -3950,7 +3949,6 @@
 }
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "orig,vex")
@@ -4002,7 +4000,6 @@
    %vpextrb\t{%2, %1, %k0|%k0, %1, %2}
    %vpextrb\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "maybe_vex")
@@ -4017,7 +4014,6 @@
   "TARGET_SSE4_1 && TARGET_MMX_WITH_SSE"
   "%vpextrb\t{%2, %1, %k0|%k0, %1, %2}"
   [(set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "maybe_vex")
@@ -4035,7 +4031,6 @@
    vpshufb\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,maybe_evex")
    (set_attr "btver2_decode" "vector")
@@ -4053,7 +4048,6 @@
    vpshufb\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,maybe_evex")
    (set_attr "btver2_decode" "vector")
@@ -4191,7 +4185,6 @@
    (set_attr "mmx_isa" "native,*")
    (set_attr "type" "mmxcvt,sselog1")
    (set_attr "prefix_extra" "1,*")
-   (set_attr "prefix_data16" "*,1")
    (set_attr "length_immediate" "*,1")
    (set_attr "mode" "DI,TI")])
 
@@ -4531,7 +4524,6 @@
 }
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "orig,vex")
@@ -4575,7 +4567,6 @@
    %vpextrb\t{%2, %1, %k0|%k0, %1, %2}
    %vpextrb\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "maybe_vex")
@@ -4590,7 +4581,6 @@
   "TARGET_SSE4_1"
   "%vpextrb\t{%2, %1, %k0|%k0, %1, %2}"
   [(set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "maybe_vex")
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 65389a3e05f5..b0761406cf63 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -15672,7 +15672,6 @@
    vpmuldq\t{%2, %1, %0<mask_operand3>|%0<mask_operand3>, %1, %2}"
   [(set_attr "isa" "noavx,noavx,avx")
    (set_attr "type" "sseimul")
-   (set_attr "prefix_data16" "1,1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,orig,vex")
    (set_attr "mode" "TI")])
@@ -16746,8 +16745,6 @@
    vp<maxmin_int>w\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sseiadd")
-   (set_attr "prefix_data16" "1,*")
-   (set_attr "prefix_extra" "*,1")
    (set_attr "prefix" "orig,vex")
    (set_attr "mode" "TI")])
 
@@ -16830,8 +16827,6 @@
    vp<maxmin_int>b\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sseiadd")
-   (set_attr "prefix_data16" "1,*")
-   (set_attr "prefix_extra" "*,1")
    (set_attr "prefix" "orig,vex")
    (set_attr "mode" "TI")])
 
@@ -17059,7 +17054,6 @@
    vpcmpeq<ssemodesuffix>\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "ssecmp")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix" "orig,vex")
    (set_attr "mode" "TI")])
 
@@ -17121,7 +17115,6 @@
    vpcmpgt<ssemodesuffix>\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "ssecmp")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix" "orig,vex")
    (set_attr "mode" "TI")])
 
@@ -18877,12 +18870,6 @@
 	    (match_test "GET_MODE_NUNITS (<MODE>mode) == 2"))
        (const_string "1")
        (const_string "*")))
-   (set (attr "prefix_data16")
-     (if_then_else
-       (and (not (match_test "TARGET_AVX"))
-	    (match_test "GET_MODE_NUNITS (<MODE>mode) == 8"))
-       (const_string "1")
-       (const_string "*")))
    (set (attr "prefix_extra")
      (if_then_else
        (ior (eq_attr "prefix" "evex")
@@ -20043,7 +20030,6 @@
    %vpextr<ssemodesuffix>\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "isa" "*,sse4")
    (set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1")
    (set (attr "prefix_extra")
      (if_then_else
        (eq (const_string "<MODE>mode") (const_string "V8HImode"))
@@ -20064,7 +20050,6 @@
   "TARGET_SSE2"
   "%vpextr<PEXTR_MODE12:ssemodesuffix>\t{%2, %1, %k0|%k0, %1, %2}"
   [(set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1")
    (set (attr "prefix_extra")
      (if_then_else
        (eq (const_string "<PEXTR_MODE12:MODE>mode") (const_string "V8HImode"))
@@ -20084,7 +20069,6 @@
   "TARGET_SSE4_1"
   "%vpextrb\t{%2, %1, %k0|%k0, %1, %2}"
   [(set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "maybe_vex")
@@ -21298,7 +21282,6 @@
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sseiadd")
    (set_attr "atom_unit" "complex")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,vex")
    (set_attr "mode" "TI")])
@@ -21569,7 +21552,6 @@
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sseiadd")
    (set_attr "atom_unit" "simul")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,vex")
    (set_attr "mode" "TI")])
@@ -21697,7 +21679,6 @@
    vpmulhrsw\t{%2, %1, %0<mask_operand4>|%0<mask_operand4>, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sseimul")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,maybe_evex")
    (set_attr "mode" "<sseinsnmode>")])
@@ -21821,7 +21802,6 @@
    vpshufb\t{%2, %1, %0<mask_operand3>|%0<mask_operand3>, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,maybe_evex")
    (set_attr "btver2_decode" "vector")
@@ -21888,7 +21868,6 @@
    vpsign<ssemodesuffix>\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,vex")
    (set_attr "mode" "<sseinsnmode>")])
@@ -21956,7 +21935,6 @@
   [(set_attr "isa" "noavx,avx")
    (set_attr "type" "sseishft")
    (set_attr "atom_unit" "sishuf")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "orig,vex")
@@ -22050,7 +22028,6 @@
   "TARGET_SSSE3"
   "%vpabs<ssemodesuffix>\t{%1, %0|%0, %1}"
   [(set_attr "type" "sselog1")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "maybe_vex")
    (set_attr "mode" "<sseinsnmode>")])
@@ -24302,7 +24279,6 @@
   DONE;
 }
   [(set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "memory" "none,load")
@@ -24328,7 +24304,6 @@
   "TARGET_SSE4_2"
   "%vpcmpestri\t{%5, %3, %1|%1, %3, %5}"
   [(set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "maybe_vex")
    (set_attr "length_immediate" "1")
@@ -24356,7 +24331,6 @@
   "TARGET_SSE4_2"
   "%vpcmpestrm\t{%5, %3, %1|%1, %3, %5}"
   [(set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "maybe_vex")
@@ -24382,7 +24356,6 @@
    %vpcmpestri\t{%6, %4, %2|%2, %4, %6}
    %vpcmpestri\t{%6, %4, %2|%2, %4, %6}"
   [(set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "memory" "none,load,none,load")
@@ -24437,7 +24410,6 @@
   DONE;
 }
   [(set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "memory" "none,load")
@@ -24459,7 +24431,6 @@
   "TARGET_SSE4_2"
   "%vpcmpistri\t{%3, %2, %1|%1, %2, %3}"
   [(set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "maybe_vex")
@@ -24483,7 +24454,6 @@
   "TARGET_SSE4_2"
   "%vpcmpistrm\t{%3, %2, %1|%1, %2, %3}"
   [(set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix" "maybe_vex")
@@ -24507,7 +24477,6 @@
    %vpcmpistri\t{%4, %3, %2|%2, %3, %4}
    %vpcmpistri\t{%4, %3, %2|%2, %3, %4}"
   [(set_attr "type" "sselog")
-   (set_attr "prefix_data16" "1")
    (set_attr "prefix_extra" "1")
    (set_attr "length_immediate" "1")
    (set_attr "memory" "none,load,none,load")
@@ -29344,7 +29313,6 @@
    gf2p8affineinvqb\t{%3, %2, %0| %0, %2, %3}
    vgf2p8affineinvqb\t{%3, %2, %1, %0<mask_operand4>| %0<mask_operand4>, %1, %2, %3}"
   [(set_attr "isa" "noavx,avx")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,maybe_evex")
    (set_attr "mode" "<sseinsnmode>")])
@@ -29361,7 +29329,6 @@
    gf2p8affineqb\t{%3, %2, %0| %0, %2, %3}
    vgf2p8affineqb\t{%3, %2, %1, %0<mask_operand4>| %0<mask_operand4>, %1, %2, %3}"
   [(set_attr "isa" "noavx,avx")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,maybe_evex")
    (set_attr "mode" "<sseinsnmode>")])
@@ -29377,7 +29344,6 @@
    gf2p8mulb\t{%2, %0| %0, %2}
    vgf2p8mulb\t{%2, %1, %0<mask_operand3>| %0<mask_operand3>, %1, %2}"
   [(set_attr "isa" "noavx,avx")
-   (set_attr "prefix_data16" "1,*")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "orig,maybe_evex")
    (set_attr "mode" "<sseinsnmode>")])
-- 
2.47.2