https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98461
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
> So add combine splitter?
I'm testing this patch
1 file changed, 15 insertions(+), 1 deletion(-)
gcc/config/i386/sse.md | 16 +++++++++++++++-
modified gcc/config/i386/sse.md
@@ -640,7 +640,8 @@ (define_mode_attr ssedoublemode
(define_mode_attr ssebytemode
[(V8DI "V64QI") (V4DI "V32QI") (V2DI "V16QI")
- (V16SI "V64QI") (V8SI "V32QI") (V4SI "V16QI")])
+ (V16SI "V64QI") (V8SI "V32QI") (V4SI "V16QI")
+ (V32HI "V64QI") (V16HI "V32QI") (V8HI "V16QI")])
;; All 128bit vector integer modes
(define_mode_iterator VI_128 [V16QI V8HI V4SI V2DI])
@@ -16065,6 +16066,19 @@ (define_insn "<sse2_avx2>_pmovmskb"
(set_attr "prefix" "maybe_vex")
(set_attr "mode" "SI")])
+(define_split
+ [(set (match_operand:SI 0 "register_operand")
+ (unspec:SI
+ [(subreg:<ssebytemode>
+ (not:VI248_AVX2
+ (match_operand:VI248_AVX2 1 "register_operand")) 0)]
+ UNSPEC_MOVMSK))]
+ "TARGET_SSE2"
+ [(set (match_dup 0)
+ (unspec:SI [(match_dup 2)] UNSPEC_MOVMSK))
+ (set (match_dup 0) (not:SI (match_dup 0)))]
+ "operands[2] = lowpart_subreg (<ssebytemode>mode, operands[1],
<MODE>mode);")
+
(define_insn "*<sse2_avx2>_pmovmskb_zext"
[(set (match_operand:DI 0 "register_operand" "=r")
(zero_extend:DI
