gcc7/gcc7-pfe-0003-Backport-Error-out-on-nvptx-for-fpatchable-function-.patch

From cbc0c2840906ad6fee93a7423a0212713949e90e Mon Sep 17 00:00:00 2001
From: Tom de Vries <tom@codesourcery.com>
Date: Thu, 3 Aug 2017 11:18:09 +0000
Subject: [PATCH 03/22] Backport Error out on nvptx for
 fpatchable-function-entry

2021-10-07  Giuliano Belinassi  <gbelinassi@suse.de>

	Backport from mainline
	2017-08-03  Tom de Vries  <tom@codesourcery.com>

	PR target/81662
	* config/nvptx/nvptx.c (nvptx_option_override): Emit sorry if
	function_entry_patch_area_size > 0.

	* gcc.target/nvptx/patchable_function_entry-default.c: New test.
---
 gcc/config/nvptx/nvptx.c                          |  4 ++++
 .../nvptx/patchable_function_entry-default.c      | 15 +++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 gcc/testsuite/gcc.target/nvptx/patchable_function_entry-default.c

diff --git a/gcc/config/nvptx/nvptx.c b/gcc/config/nvptx/nvptx.c
index 74bce3ec8d0..b0470836fb8 100644
--- a/gcc/config/nvptx/nvptx.c
+++ b/gcc/config/nvptx/nvptx.c
@@ -178,6 +178,10 @@ nvptx_option_override (void)
   if (!global_options_set.x_flag_no_common)
     flag_no_common = 1;
 
+  /* The patch area requires nops, which we don't have.  */
+  if (function_entry_patch_area_size > 0)
+    sorry ("not generating patch area, nops not supported");
+
   /* Assumes that it will see only hard registers.  */
   flag_var_tracking = 0;
 
diff --git a/gcc/testsuite/gcc.target/nvptx/patchable_function_entry-default.c b/gcc/testsuite/gcc.target/nvptx/patchable_function_entry-default.c
new file mode 100644
index 00000000000..42544562725
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/patchable_function_entry-default.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fpatchable-function-entry=3,1" } */
+
+extern int a;
+
+int f3 (void);
+
+int
+__attribute__((noinline))
+f3 (void)
+{
+  return 5*a;
+}
+
+/* { dg-excess-errors "sorry, unimplemented: not generating patch area, nops not supported" } */
-- 
2.33.1