Error out on nvptx for fpatchable-function-entry

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.

From-SVN: r250851

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f7b620c4d0df194c96830e3c9227a9e093ccdd14..0449bfc13d69c97a223995e7aba27b1799f32230 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+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.
+
 2017-08-03  Jakub Jelinek  <jakub@redhat.com>
 
        PR driver/81650

diff --git a/gcc/config/nvptx/nvptx.c b/gcc/config/nvptx/nvptx.c
index 0d21eb1406c28308262ac47e7f4180e3e9e19b1f..dddb9522dfae7c18c663e03816a06eb7cb2b977a 100644 (file)
--- a/gcc/config/nvptx/nvptx.c
+++ b/gcc/config/nvptx/nvptx.c
@@ -180,6 +180,10 @@ 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/ChangeLog b/gcc/testsuite/ChangeLog
index 53829f7e779a51fa6f1d8e53001743ccae70953c..760a454c0b0ca572b1769f738d8b90c9b685f3d5 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2017-08-03  Tom de Vries  <tom@codesourcery.com>
+
+       PR target/81662
+       * gcc.target/nvptx/patchable_function_entry-default.c: New test.
+
 2017-08-03  Jakub Jelinek  <jakub@redhat.com>
 
        PR driver/81650

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 (file)
index 0000000..4254456
--- /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" } */