[Bug target/66174] [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma
ubizjak at gmail dot com
gcc-bugzilla@gcc.gnu.org
Sat May 16 17:38:00 GMT 2015
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66174
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Untested patch:
--cut here--
Index: i386.c
===================================================================
--- i386.c (revision 223231)
+++ i386.c (working copy)
@@ -46780,12 +46780,14 @@ expand_vec_perm_blend (struct expand_vec_perm_d *d
machine_mode vmode = d->vmode;
unsigned i, mask, nelt = d->nelt;
rtx target, op0, op1, x;
+ rtx maskop;
rtx rperm[32], vperm;
if (d->one_operand_p)
return false;
if (TARGET_AVX512F && GET_MODE_SIZE (vmode) == 64
- && GET_MODE_SIZE (GET_MODE_INNER (vmode)) >= 4)
+ && (TARGET_AVX512BW
+ || GET_MODE_SIZE (GET_MODE_INNER (vmode)) >= 4))
;
else if (TARGET_AVX2 && GET_MODE_SIZE (vmode) == 32)
;
@@ -46959,8 +46961,28 @@ expand_vec_perm_blend (struct expand_vec_perm_d *d
gcc_unreachable ();
}
+ switch (vmode)
+ {
+ case V8DFmode:
+ case V8DImode:
+ maskop = force_reg (QImode, gen_int_mode (mask, QImode));
+ break;
+ case V16SFmode:
+ case V16SImode:
+ maskop = force_reg (HImode, gen_int_mode (mask, HImode));
+ break;
+ case V32HImode:
+ maskop = force_reg (SImode, gen_int_mode (mask, SImode));
+ break;
+ case V64QImode:
+ maskop = force_reg (DImode, gen_int_mode (mask, DImode));
+ break;
+ default:
+ maskop = GEN_INT (mask);
+ }
+
/* This matches five different patterns with the different modes. */
- x = gen_rtx_VEC_MERGE (vmode, op1, op0, GEN_INT (mask));
+ x = gen_rtx_VEC_MERGE (vmode, op1, op0, maskop);
x = gen_rtx_SET (target, x);
emit_insn (x);
if (target != d->target)
--cut here--
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