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mips.md (UNSPEC_MEMORY_BARRIER): New entry in define_constants. 

* config/mips/mips.md (UNSPEC_MEMORY_BARRIER): New entry in
	define_constants.
	(memory_barrier): Rewrote as an insn that clobbers memory.

From-SVN: r128349
This commit is contained in:
David Daney 2007-09-10 18:23:27 +00:00 committed by David Daney
parent 04910611bd
commit bfd9cff5c5
2 changed files with 11 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2007-09-10 David Daney <ddaney@avtrex.com>
* config/mips/mips.md (UNSPEC_MEMORY_BARRIER): New entry in
define_constants.
(memory_barrier): Rewrote as an insn that clobbers memory.
2007-09-10 Richard Sandiford <richard@codesourcery.com> 2007-09-10 Richard Sandiford <richard@codesourcery.com>
* config/mips/mips.c (mips_global_pointer): Check * config/mips/mips.c (mips_global_pointer): Check

8
gcc/config/mips/mips.md
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@ -57,6 +57,7 @@
(UNSPEC_SYNC_OLD_OP 38) (UNSPEC_SYNC_OLD_OP 38)
(UNSPEC_SYNC_NEW_OP 39) (UNSPEC_SYNC_NEW_OP 39)
(UNSPEC_SYNC_EXCHANGE 40) (UNSPEC_SYNC_EXCHANGE 40)
(UNSPEC_MEMORY_BARRIER 41)
(UNSPEC_ADDRESS_FIRST 100) (UNSPEC_ADDRESS_FIRST 100)
@ -4304,10 +4305,11 @@
;; Atomic memory operations. ;; Atomic memory operations.
(define_expand "memory_barrier" (define_insn "memory_barrier"
[(unspec_volatile [(const_int 0)] UNSPEC_SYNC)] [(set (mem:BLK (scratch))
(unspec:BLK [(const_int 0)] UNSPEC_MEMORY_BARRIER))]
"ISA_HAS_SYNC" "ISA_HAS_SYNC"
"") "sync")
(define_insn "sync_compare_and_swap<mode>" (define_insn "sync_compare_and_swap<mode>"
[(set (match_operand:GPR 0 "register_operand" "=&d,d") [(set (match_operand:GPR 0 "register_operand" "=&d,d")