rtl.h (gen_frame_mem, [...]): Declare.

	* rtl.h (gen_frame_mem, gen_tmp_stack_mem): Declare.
	* emit-rtl.c (gen_frame_mem, gen_tmp_stack_mem): New functions.
	* builtins.c (expand_builtin_return_addr): Use gen_frame_mem.

From-SVN: r103917

1 files changed, 25 insertions, 0 deletions

diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index d9e253e..53bff45 100644
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -607,6 +607,31 @@ gen_const_mem (enum machine_mode mode, rtx addr)
   return mem;
 }
 
+/* Generate a MEM referring to fixed portions of the frame, e.g., register
+   save areas.  */
+
+rtx
+gen_frame_mem (enum machine_mode mode, rtx addr)
+{
+  rtx mem = gen_rtx_MEM (mode, addr);
+  MEM_NOTRAP_P (mem) = 1;
+  set_mem_alias_set (mem, get_frame_alias_set ());
+  return mem;
+}
+
+/* Generate a MEM referring to a temporary use of the stack, not part
+    of the fixed stack frame.  For example, something which is pushed
+    by a target splitter.  */
+rtx
+gen_tmp_stack_mem (enum machine_mode mode, rtx addr)
+{
+  rtx mem = gen_rtx_MEM (mode, addr);
+  MEM_NOTRAP_P (mem) = 1;
+  if (!current_function_calls_alloca)
+    set_mem_alias_set (mem, get_frame_alias_set ());
+  return mem;
+}
+
 /* We want to create (subreg:OMODE (obj:IMODE) OFFSET).  Return true if
    this construct would be valid, and false otherwise.  */