x86: Check TARGET_AVX512VL when enabling FMA

Check TARGET_AVX512VL when enabling FMA to avoid

gcc.target/i386/avx512er-vrsqrt28ps-3.c:25:1: error: unrecognizable insn:
(insn 29 28 30 6 (set (reg:V8SF 108)
        (fma:V8SF (reg:V8SF 106)
            (reg:V8SF 105)
            (reg:V8SF 110)))

when TARGET_AVX512VL isn't enabled.

	PR target/96144
	* config/i386/i386-expand.c (ix86_emit_swsqrtsf): Check
	TARGET_AVX512VL when enabling FMA.

diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c
index 49718b7..e194214 100644 (file)
--- a/gcc/config/i386/i386-expand.c
+++ b/gcc/config/i386/i386-expand.c
@@ -15540,7 +15540,10 @@ void ix86_emit_swsqrtsf (rtx res, rtx a, machine_mode mode, bool recip)
   /* e0 = x0 * a */
   emit_insn (gen_rtx_SET (e0, gen_rtx_MULT (mode, x0, a)));
 
-  if (TARGET_FMA || TARGET_AVX512F)
+  unsigned vector_size = GET_MODE_SIZE (mode);
+  if (TARGET_FMA
+      || (TARGET_AVX512F && vector_size == 64)
+      || (TARGET_AVX512VL && (vector_size == 32 || vector_size == 16)))
     emit_insn (gen_rtx_SET (e2,
                            gen_rtx_FMA (mode, e0, x0, mthree)));
   else