[gcc r13-10207] i386: Fix up *avx512f_load<mode>_mask for -masm=intel [PR124335]

[Jakub Jelinek]

https://gcc.gnu.org/g:eea02fc012f297cfbc81bdb006150a4280ddffd3

commit r13-10207-geea02fc012f297cfbc81bdb006150a4280ddffd3
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Mar 3 09:50:44 2026 +0100

    i386: Fix up *avx512f_load<mode>_mask for -masm=intel [PR124335]
    
    The Intel syntax part is missing % before 3, so it always prints {3}
    rather than {k1} or similar.
    
    Fixed thusly.
    
    2026-03-03  Jakub Jelinek  <jakub@redhat.com>
    
            PR target/124335
            * config/i386/sse.md (*avx512f_load<mode>_mask): Use %{%3%} instead of
            %{3%} for -masm=intel syntax.
    
            * gcc.target/i386/avx512fp16-pr124335.c: New test.
    
    (cherry picked from commit b3502a668627caa7f49609a36dbeaf088f17037c)

Diff:
---
 gcc/config/i386/sse.md                              |  2 +-
 gcc/testsuite/gcc.target/i386/avx512fp16-pr124335.c | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index b111a451e18d..5191d00a39f3 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -1529,7 +1529,7 @@
 	  (match_operand:<ssevecmode> 4 "const0_operand")
 	  (const_int 1)))]
   "TARGET_AVX512F"
-  "vmov<ssescalarmodesuffix>\t{%1, %0%{%3%}%N2|%0%{3%}%N2, %1}"
+  "vmov<ssescalarmodesuffix>\t{%1, %0%{%3%}%N2|%0%{%3%}%N2, %1}"
   [(set_attr "type" "ssemov")
    (set_attr "prefix" "evex")
    (set_attr "memory" "load")
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-pr124335.c b/gcc/testsuite/gcc.target/i386/avx512fp16-pr124335.c
new file mode 100644
index 000000000000..21dc1282b9ad
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-pr124335.c
@@ -0,0 +1,13 @@
+/* PR target/124335 */
+/* { dg-do assemble } */
+/* { dg-require-effective-target masm_intel } */
+/* { dg-options "-mavx512fp16 -masm=intel" } */
+/* { dg-require-effective-target avx512bw } */
+
+#include <x86intrin.h>
+
+__m128h
+foo (_Float16 const *x, __mmask8 y)
+{
+  return _mm_maskz_load_sh (y, x);
+}