From: Uros Bizjak <ubizjak@gmail.com>
Date: Thu, 11 May 2023 18:54:24 +0000 (+0200)
Subject: i386: Handle V4HI and V2SImode in ix86_widen_mult_cost [PR109807]
X-Git-Tag: basepoints/gcc-15~9426
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=10a0d98356680a387b69f8659099450f7af86d9f;p=thirdparty%2Fgcc.git

i386: Handle V4HI and V2SImode in ix86_widen_mult_cost [PR109807]

Do not crash when asking ix86_widen_mult_cost for the cost of
a widening mul operation to V4HI or V2SImode.

gcc/ChangeLog:

	PR target/109807
	* config/i386/i386.cc (ix86_widen_mult_cost):
	Handle V4HImode and V2SImode.

gcc/testsuite/ChangeLog:

	PR target/109807
	* gcc.target/i386/pr109807.c: New test.
---

diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc
index b1d08ecdb3d4..62fe06fdbaa4 100644
--- a/gcc/config/i386/i386.cc
+++ b/gcc/config/i386/i386.cc
@@ -20417,12 +20417,14 @@ 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.  */
diff --git a/gcc/testsuite/gcc.target/i386/pr109807.c b/gcc/testsuite/gcc.target/i386/pr109807.c
new file mode 100644
index 000000000000..6380eb35312c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr109807.c
@@ -0,0 +1,4 @@
+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-O2 -msse4" } */
+
+#include "sse2-mmx-pmaddwd.c"