[ARM] minor opt in thumb_stack_frame_destroyed_p
Commit Message
Pedro Alves <palves@redhat.com> writes:
> This assumes epilogue sequences are always at the end of the function.
Ur, right. Looks compiler can place prologue and epilogue in the middle
of the function, no at the first or last blocks.
The patch is reverted.
@@ -1,3 +1,11 @@
+2016-04-18 Yao Qi <yao.qi@linaro.org>
+
+ Revert:
+ 2016-04-15 Yao Qi <yao.qi@linaro.org>
+
+ * arm-tdep.c (thumb_stack_frame_destroyed_p): Return zero if
+ PC is far from the end of function.
+
2016-04-16 Pedro Alves <palves@redhat.com>
* ada-exp.y (yydefred): Define as ada_yydefred.
@@ -3135,14 +3135,6 @@ thumb_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
if (!find_pc_partial_function (pc, NULL, &func_start, &func_end))
return 0;
- if (func_end - pc > 4 * 4)
- {
- /* There shouldn't be more than four instructions in epilogue.
- If PC is still 16 bytes away from FUNC_END, it isn't in
- epilogue. */
- return 0;
- }
-
/* The epilogue is a sequence of instructions along the following lines:
- add stack frame size to SP or FP