From b80cbe2d8d46c8518dca2d781c8ee4d02c5ba1ed Mon Sep 17 00:00:00 2001
From: Uros Bizjak <ubizjak@gmail.com>
Date: Mon, 2 Mar 2020 21:13:36 +0100
Subject: [PATCH] i386: Allow only registers with VALID_INT_MODE_P modes in
 movstrict<mode> [PR93997]

*movstrict<mode>_1 insn pattern allows only general registers,
so we have to reject modes not suitable for general regs in
corresponding movstrict<mode> expander.

	PR target/93997
	* config/i386/i386.md (movstrict<mode>): Allow only
	registers with VALID_INT_MODE_P modes.

testsuite/ChangeLog:

	PR target/93997
	* gcc.target/i386/pr93997.c: New test.
---
 gcc/ChangeLog                           | 6 ++++++
 gcc/config/i386/i386.md                 | 2 +-
 gcc/testsuite/ChangeLog                 | 5 +++++
 gcc/testsuite/gcc.target/i386/pr93997.c | 4 ++++
 4 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/pr93997.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0d65434..d27b74a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2020-03-02  Uroš Bizjak  <ubizjak@gmail.com>
+
+	PR target/93997
+	* config/i386/i386.md (movstrict<mode>): Allow only
+	registers with VALID_INT_MODE_P modes.
+
 2020-03-02  Andrew Stubbs  <ams@codesourcery.com>
 
 	* config/gcn/gcn-valu.md (dpp_move<mode>): New.
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 6c57500..8e29dff 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -2778,7 +2778,7 @@
 {
   gcc_assert (SUBREG_P (operands[0]));
   if ((TARGET_PARTIAL_REG_STALL && optimize_function_for_speed_p (cfun))
-      || GET_MODE_CLASS (GET_MODE (SUBREG_REG (operands[0]))) != MODE_INT)
+      || !VALID_INT_MODE_P (GET_MODE (SUBREG_REG (operands[0]))))
     FAIL;
 })
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index e18c6a9..e43c554 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-02  Uroš Bizjak  <ubizjak@gmail.com>
+
+	PR target/93997
+	* gcc.target/i386/pr93997.c: New test.
+
 2020-03-02  Martin Sebor  <msebor@redhat.com>
 
 	PR tree-optimization/92982
diff --git a/gcc/testsuite/gcc.target/i386/pr93997.c b/gcc/testsuite/gcc.target/i386/pr93997.c
new file mode 100644
index 0000000..350d1ea
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr93997.c
@@ -0,0 +1,4 @@
+/* { dg-do compile { target ia32 } } */
+/* { dg-options "-march=athlon-4" } */
+
+#include "../../c-c++-common/vector-scalar.c"
-- 
2.7.4