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[PATCH - repost] Enable push_fpscr. pop_fpscr for SH2E


Hi,

I don't have cvs write access. Please check it in for me.

- Dhananjay


Changelog

2003-06-26 Dhananjay Deshpande <dhananjayd@kpitcummins.com>

	* gcc/config/sh/sh.md  (define_expand "push_fpscr"): Enable for 	TARGET_SH2E.
	(define_expand "pop_fpscr"): Likewise.
	(define_insn "fpu_switch"): Likewise.

==========================================================================
--- sh.md.old	Thu Jun 26 14:20:19 2003
+++ sh.md	Thu Jun 26 14:20:56 2003
@@ -3343,7 +3343,7 @@
 
 (define_expand "push_fpscr"
   [(const_int 0)]
-  "TARGET_SH3E"
+  "TARGET_SH2E"
   "
 {
   rtx insn = emit_insn (gen_fpu_switch (gen_rtx (MEM, PSImode,
@@ -3356,7 +3356,7 @@
 
 (define_expand "pop_fpscr"
   [(const_int 0)]
-  "TARGET_SH3E"
+  "TARGET_SH2E"
   "
 {
   rtx insn = emit_insn (gen_fpu_switch (get_fpscr_rtx (),
@@ -8080,7 +8080,7 @@ mov.l\\t1f,r0\\n\\
 (define_insn "fpu_switch"
   [(set (match_operand:PSI 0 "general_movdst_operand" "=c,c,r,c,c,r,m,r,<")
 	(match_operand:PSI 1 "general_movsrc_operand" "c,>,m,m,r,r,r,!c,c"))]
-  "TARGET_SH3E
+  "TARGET_SH2E
    && (! reload_completed
        || true_regnum (operands[0]) != FPSCR_REG
        || GET_CODE (operands[1]) != MEM
==========================================================================

-----Original Message-----
From: Alexandre Oliva [mailto:aoliva@redhat.com]
Sent: Thursday, June 26, 2003 1:05 PM
To: Dhananjay R. Deshpande
Cc: gcc-patches@gcc.gnu.org; Jorn Rennecke
Subject: Re: [PATCH] Enable push_fpscr. pop_fpscr for SH2E


On Jun 26, 2003, "Dhananjay R. Deshpande" <dhananjayd@KPITCummins.com> wrote:

> fpu_switch is used for mode switching only for SH4. But sometime
> last year a patch enabled fpscr to be pushed in interrupt handler if
> it is live which requires push and pop fpscr patterns.

>Ah, yes, indeed, I had misunderstood the logic in push_regs().  Still,
>I don't see how calc_live_regs() can possibly mark fpscr as used in
>SH2e or SH3e.  Anyway, there's no reason to not expose the patterns
>since they *are* available on SH2e, so...  Please check it in, if you
>can, or post the patch again letting me know you need someone else to
>check it in for you (I ask you to post it again just so that someone
>looking for the patch in gcc-patches, two years from now, finds it
>posted at a date similar to that in the ChangeLog, not half a year
>before :-).  Thanks, and sorry about the long delay!


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