operand[0] has a subreg taken (as operand[3]), which is modified
before operand[1] is used.
Built succesfully but I'm not set up to run the testsuite, sorry.
It fixes the testcase of course.
gcc/ChangeLog:
2014-04-16 Segher Boessenkool <seg...@kernel.crashing.org>
* config/m68k/m68k.md (extendplussidi): Add earlyclobber.
---
gcc/config/m68k/m68k.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/m68k/m68k.md b/gcc/config/m68k/m68k.md
index e61048b..9e7f3e2 100644
--- a/gcc/config/m68k/m68k.md
+++ b/gcc/config/m68k/m68k.md
@@ -1869,7 +1869,7 @@ (define_insn "extendsidi2"
;; result of the SI tree to be in the lower register of the DI target
(define_insn "extendplussidi"
- [(set (match_operand:DI 0 "register_operand" "=d")
+ [(set (match_operand:DI 0 "register_operand" "=&d")
(sign_extend:DI (plus:SI (match_operand:SI 1 "general_operand" "%rmn")
(match_operand:SI 2 "general_operand" "rmn"))))]
""
--
1.8.1.4
