@@ -20417,14 +20417,12 @@ ix86_widen_mult_cost (const struct processor_costs *cost,
int basic_cost = 0;
switch (mode)
{
- case V4HImode:
case V8HImode:
case V16HImode:
if (!uns_p || mode == V16HImode)
extra_cost = cost->sse_op * 2;
basic_cost = cost->mulss * 2 + cost->sse_op * 4;
break;
- case V2SImode:
case V4SImode:
case V8SImode:
/* pmulhw/pmullw can be used. */
@@ -20441,7 +20439,8 @@ ix86_widen_mult_cost (const struct processor_costs *cost,
basic_cost = cost->mulss * 2 + cost->sse_op * 4;
break;
default:
- gcc_unreachable();
+ /* Not implemented. */
+ return 100;
}
return ix86_vec_cost (mode, basic_cost + extra_cost);
}
new file mode 100644
@@ -0,0 +1,4 @@
+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-Os -ftree-slp-vectorize -mavx512vl" } */
+
+#include "../../gcc.dg/vect/slp-widen-mult-u8.c"