From 69d7aabfd8fec442047cefb136b1fd2680310fa9 Mon Sep 17 00:00:00 2001
From: Cesar Philippidis <cesar@codesourcery.com>
Date: Mon, 17 Sep 2018 12:59:19 -0700
Subject: [PATCH] [nvptx] Add atomic_fetch* support for SImode arguments.

	gcc/
	* config/nvptx/nvptx.md (atomic_fetch_<logic><mode>): Enable with
	SImode args.

	gcc/testsuite/
	* gcc.target/nvptx/atomic-fetch-2.c: Rename to ...
	* gcc.target/nvptx/atomic_fetch-2.c: ... this.
	* gcc.target/nvptx/atomic_fetch-3.c: New test.


Co-Authored-By: Bernd Schmidt <bernds_cb1@t-online.de>

From-SVN: r264371
---
 gcc/ChangeLog                                      |  6 ++++++
 gcc/config/nvptx/nvptx.md                          |  2 +-
 gcc/testsuite/ChangeLog                            |  7 +++++++
 .../nvptx/{atomic-fetch-2.c => atomic_fetch-2.c}   |  0
 gcc/testsuite/gcc.target/nvptx/atomic_fetch-3.c    | 24 ++++++++++++++++++++++
 5 files changed, 38 insertions(+), 1 deletion(-)
 rename gcc/testsuite/gcc.target/nvptx/{atomic-fetch-2.c => atomic_fetch-2.c} (100%)
 create mode 100644 gcc/testsuite/gcc.target/nvptx/atomic_fetch-3.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a9e0589..017aa64 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-09-17  Cesar Philippidis  <cesar@codesourcery.com>
+	    Bernd Schmidt <bernds_cb1@t-online.de>
+
+	* config/nvptx/nvptx.md (atomic_fetch_<logic><mode>): Enable with
+	SImode args.
+
 2018-09-17  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md (truncxf<mode>2_i387_noop_unspec): Change
diff --git a/gcc/config/nvptx/nvptx.md b/gcc/config/nvptx/nvptx.md
index dd6032d..ca00b1d 100644
--- a/gcc/config/nvptx/nvptx.md
+++ b/gcc/config/nvptx/nvptx.md
@@ -1449,7 +1449,7 @@
 	  UNSPECV_LOCK))
    (set (match_operand:SDIM 0 "nvptx_register_operand" "=R")
 	(match_dup 1))]
-  "TARGET_SM35"
+  "<MODE>mode == SImode || TARGET_SM35"
   "%.\\tatom%A1.b%T0.<logic>\\t%0, %1, %2;"
   [(set_attr "atomic" "true")])
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5cce863..ddf5f73 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2018-09-17  Cesar Philippidis  <cesar@codesourcery.com>
+	    Bernd Schmidt <bernds_cb1@t-online.de>
+
+	* gcc.target/nvptx/atomic-fetch-2.c: Rename to ...
+	* gcc.target/nvptx/atomic_fetch-2.c: ... this.
+	* gcc.target/nvptx/atomic_fetch-3.c: New test.
+
 2018-09-17  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/87328
diff --git a/gcc/testsuite/gcc.target/nvptx/atomic-fetch-2.c b/gcc/testsuite/gcc.target/nvptx/atomic_fetch-2.c
similarity index 100%
rename from gcc/testsuite/gcc.target/nvptx/atomic-fetch-2.c
rename to gcc/testsuite/gcc.target/nvptx/atomic_fetch-2.c
diff --git a/gcc/testsuite/gcc.target/nvptx/atomic_fetch-3.c b/gcc/testsuite/gcc.target/nvptx/atomic_fetch-3.c
new file mode 100644
index 0000000..36a83eb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/atomic_fetch-3.c
@@ -0,0 +1,24 @@
+/* Test the nvptx atomic instructions for __atomic_fetch_OP for
+   SImode arguments.  */
+
+/* { dg-do compile } */
+/* { dg-options "-O2 -m32" } */
+
+int
+main()
+{
+  unsigned long a = ~0;
+  unsigned b = 0xa;
+
+  __atomic_fetch_add (&a, b, 0);
+  __atomic_fetch_and (&a, b, 0);
+  __atomic_fetch_or (&a, b, 0);
+  __atomic_fetch_xor (&a, b, 0);
+  
+  return a;
+}
+
+/* { dg-final { scan-assembler "atom.add.u32" } } */
+/* { dg-final { scan-assembler "atom.b32.and" } } */
+/* { dg-final { scan-assembler "atom.b32.or" } } */
+/* { dg-final { scan-assembler "atom.b32.xor" } } */
-- 
2.7.4