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predicates.md (fix_trunc_dest_operand): New.

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* rs6000/predicates.md (fix_trunc_dest_operand): New.
	* rs6000/rs6000.md (fix_truncdfsi2): Use fix_trunc_dest_operand.
	Check that a memory operand is valid before trying to use it.

From-SVN: r99927
This commit is contained in:
Geoffrey Keating 2005-05-18 20:36:02 +00:00 committed by Geoffrey Keating
parent 5ac7af02ea
commit 045a8eb388
3 changed files with 15 additions and 4 deletions
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4
gcc/ChangeLog
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@ -1,5 +1,9 @@
2005-05-18 Geoffrey Keating <geoffk@apple.com>
* rs6000/predicates.md (fix_trunc_dest_operand): New.
* rs6000/rs6000.md (fix_truncdfsi2): Use fix_trunc_dest_operand.
Check that a memory operand is valid before trying to use it.
* tree-cfg.c (pass_remove_useless): This pass works on trees.
2005-05-18 Richard Guenther <rguenth@gcc.gnu.org>

9
gcc/config/rs6000/predicates.md
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@ -364,6 +364,15 @@
|| GET_CODE (XEXP (XEXP (op, 0), 1)) != CONST_INT
|| INTVAL (XEXP (XEXP (op, 0), 1)) % 4 == 0")))
;; Used for the destination of the fix_truncdfsi2 expander.
;; If stfiwx will be used, the result goes to memory; otherwise,
;; we're going to emit a store and a load of a subreg, so the dest is a
;; register.
(define_predicate "fix_trunc_dest_operand"
(if_then_else (match_test "! TARGET_E500_DOUBLE && TARGET_PPC_GFXOPT")
(match_operand 0 "memory_operand")
(match_operand 0 "gpc_reg_operand")))
;; Return 1 if the operand is either a non-special register or can be used
;; as the operand of a `mode' add insn.
(define_predicate "add_operand"

6
gcc/config/rs6000/rs6000.md
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@ -5329,10 +5329,8 @@
}"
[(set_attr "length" "20")])
; In the TARGET_PPC_GFXOPT case, this could and probably should
; take a memory destination; but actually making this work is hard.
(define_expand "fix_truncdfsi2"
[(parallel [(set (match_operand:SI 0 "gpc_reg_operand" "")
[(parallel [(set (match_operand:SI 0 "fix_trunc_dest_operand" "")
(fix:SI (match_operand:DF 1 "gpc_reg_operand" "")))
(clobber (match_dup 2))
(clobber (match_dup 3))])]
@ -5349,7 +5347,7 @@
if (TARGET_PPC_GFXOPT)
{
rtx orig_dest = operands[0];
if (GET_CODE (orig_dest) != MEM)
if (! memory_operand (orig_dest, GET_MODE (orig_dest)))
operands[0] = assign_stack_temp (SImode, GET_MODE_SIZE (SImode), 0);
emit_insn (gen_fix_truncdfsi2_internal_gfxopt (operands[0], operands[1],
operands[2]));