[Bug target/105058] Incorrect register constraint in KL patterns

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105058

--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
cat test.c

 #include <immintrin.h>

 unsigned int ctrl;
 __m128i k1, k2, k3;

 void
 test_keylocker_11 (void)
 {
   register __m128i k4 __asm ("xmm16") = k2;
  asm volatile ("" : "+v" (k4));
  _mm_loadiwkey (ctrl, k1, k4, k3);
 }

gcc -O2 -march=skylake-avx512 -mkl -c


/tmp/ccy9VHP9.s: Assembler messages:
/tmp/ccy9VHP9.s:13: Error: unsupported instruction `loadiwkey'