From: Andrew Stubbs <ams@codesourcery.com>
Date: Fri, 10 Nov 2023 16:07:25 +0000 (+0000)
Subject: amdgcn: Disallow TImode vector permute
X-Git-Tag: basepoints/gcc-15~4263
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e7d3414dffc98efc8424818dedac138c99c9ca79;p=thirdparty%2Fgcc.git

amdgcn: Disallow TImode vector permute

We don't support it and it doesn't happen without vector extensions, so
just remove the unhandled case.

Fixes gcc.dg/pr78575.c failure.

gcc/ChangeLog:

	* config/gcn/gcn.cc (gcn_vectorize_vec_perm_const): Disallow TImode.
---

diff --git a/gcc/config/gcn/gcn.cc b/gcc/config/gcn/gcn.cc
index 52c8a0e409cd..22d2b6ebf6d5 100644
--- a/gcc/config/gcn/gcn.cc
+++ b/gcc/config/gcn/gcn.cc
@@ -5050,7 +5050,9 @@ gcn_vectorize_vec_perm_const (machine_mode vmode, machine_mode op_mode,
 			      rtx dst, rtx src0, rtx src1,
 			      const vec_perm_indices & sel)
 {
-  if (vmode != op_mode)
+  if (vmode != op_mode
+      || !VECTOR_MODE_P (vmode)
+      || GET_MODE_INNER (vmode) == TImode)
     return false;
 
   unsigned int nelt = GET_MODE_NUNITS (vmode);