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v850: Restore frame size check to return pattern.
- From: Nick Clifton <nickc at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Tue, 09 Sep 2008 10:17:01 +0100
- Subject: v850: Restore frame size check to return pattern.
Hi Guys,
I am applying the patch below to restore the frame size check to the
v850's return pattern. Having run the gcc and g++ testsuites I
discovered why it was there and the consequences of not having it.
(They were bad - lots of programs went into infinite loops because
the wrong return instruction was being used).
Cheers
Nick
gcc/ChangeLog
2008-09-09 Nick Clifton <nickc@redhat.com>
* config/v850/v850.md (return): Restore frame size restriction.
Index: gcc/config/v850/v850.md
===================================================================
--- gcc/config/v850/v850.md (revision 140138)
+++ gcc/config/v850/v850.md (working copy)
@@ -1563,7 +1563,7 @@
(define_insn "return"
[(return)]
- "reload_completed"
+ "reload_completed && compute_frame_size (get_frame_size (), (long *)0) == 0"
"jmp [r31]"
[(set_attr "length" "2")
(set_attr "cc" "none")])