[PATCH, i386]: Use kortest instead of ktest in *cmp<mode>_ccz_1

[PATCH, i386]: Use kortest instead of ktest in *cmp<mode>_ccz_1

[Uros Bizjak]

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Hello!

Attached patch uses equivalent instruction, where HImode variant is
also enabled for plain AVX512F isa.

2018-12-19  Uros Bizjak  <ubizjak@gmail.com>

    * config/i386/i386.md (SWI1248_AVX512BWDQ_64): Rename from
    SWI1248_AVX512BWDQ2_64.  Unconditionally enable HImode.
    (*cmp<mode>_ccz_1): Emit kortest instead of ktest insn.
    Use SWI1248_AVX512BWDQ_64 mode iterator and enable only for
    TARGET_AVX512F.

testsuite/ChangeLog:

2018-12-19  Uros Bizjak  <ubizjak@gmail.com>

    * gcc.target/i386/avx512dq-pr82855.c: Update scan-assembler pattern.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

Committed to mailine SVN.

Uros.

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Index: config/i386/i386.md
===================================================================
--- config/i386/i386.md	(revision 267276)
+++ config/i386/i386.md	(working copy)
@@ -1244,20 +1244,20 @@
 	(compare:CC (match_operand:SWI48 0 "nonimmediate_operand")
 		    (match_operand:SWI48 1 "<general_operand>")))])
 
-(define_mode_iterator SWI1248_AVX512BWDQ2_64
-  [(QI "TARGET_AVX512DQ") (HI "TARGET_AVX512DQ")
+(define_mode_iterator SWI1248_AVX512BWDQ_64
+  [(QI "TARGET_AVX512DQ") HI
    (SI "TARGET_AVX512BW") (DI "TARGET_AVX512BW && TARGET_64BIT")])
 
 (define_insn "*cmp<mode>_ccz_1"
   [(set (reg FLAGS_REG)
-	(compare (match_operand:SWI1248_AVX512BWDQ2_64 0
+	(compare (match_operand:SWI1248_AVX512BWDQ_64 0
 			"nonimmediate_operand" "<r>,?m<r>,$k")
-		 (match_operand:SWI1248_AVX512BWDQ2_64 1 "const0_operand")))]
-  "ix86_match_ccmode (insn, CCZmode)"
+		 (match_operand:SWI1248_AVX512BWDQ_64 1 "const0_operand")))]
+  "TARGET_AVX512F && ix86_match_ccmode (insn, CCZmode)"
   "@
    test{<imodesuffix>}\t%0, %0
    cmp{<imodesuffix>}\t{%1, %0|%0, %1}
-   ktest<mskmodesuffix>\t%0, %0"
+   kortest<mskmodesuffix>\t%0, %0"
   [(set_attr "type" "test,icmp,msklog")
    (set_attr "length_immediate" "0,1,*")
    (set_attr "prefix" "*,*,vex")
Index: testsuite/gcc.target/i386/avx512dq-pr82855.c
===================================================================
--- testsuite/gcc.target/i386/avx512dq-pr82855.c	(revision 267276)
+++ testsuite/gcc.target/i386/avx512dq-pr82855.c	(working copy)
@@ -1,7 +1,7 @@
 /* PR target/82855 */
 /* { dg-do compile } */
 /* { dg-options "-O2 -mavx512vl -mavx512dq" } */
-/* { dg-final { scan-assembler {\mktestb\M} } } */
+/* { dg-final { scan-assembler {\mkortestb\M} } } */
 
 #include <immintrin.h>