* RFA: sh64-media.cpu make-mextr bug fix (Was: PATCH/RFA]: SHmedia trampoline)
@ 2003-01-16 23:52 Joern Rennecke
2003-01-17 5:44 ` Ben Elliston
0 siblings, 1 reply; 2+ messages in thread
From: Joern Rennecke @ 2003-01-16 23:52 UTC (permalink / raw)
To: cgen; +Cc: Kaz Kojima, aoliva
Kaz Kojima wrote on gcc-patches:
> With running C testsuite on sh5-linux, I've found that tests using
> nested functions failed. The attached change of the 32-bit SHmedia
> trampoline fixes such regressions on sh64-unknown-linux-gnu for
> mainline.
> 2003-01-15 Kaz Kojima <kkojima@gcc.gnu.org>
>
> * config/sh/sh.c (sh_initialize_trampoline): Emit rotrdi3_mextr
> instead of rotldi3_mextr.
And I replied:
> Good catch. This bug remained undetected for such a long time because
> it mirrors a bug in the cgen simulator.
This is the corresponding patch for cgen:
Thu Jan 16 22:08:57 2003 J"orn Rennecke <amylaar@onetel.net.uk>
* cpu/sh64-media.cpu (make-mextr): Fix setting of count.
Index: cpu/sh64-media.cpu
===================================================================
RCS file: /cvs/src/src/cgen/cpu/sh64-media.cpu,v
retrieving revision 1.2
diff -p -r1.2 sh64-media.cpu
*** cpu/sh64-media.cpu 25 Jun 2002 17:17:45 -0000 1.2
--- cpu/sh64-media.cpu 16 Jan 2003 21:57:17 -0000
***************
*** 1120,1129 ****
(.str "mextr" n " $rm, $rn, $rd")
(+ (f-op op) rm (f-ext extop) rn rd (f-rsvd 0))
(sequence ((QI count) (DI mask) (DI rhs))
! (set count (mul QI 8 (sub QI 8 n)))
(set mask (sll DI (inv 0) count))
(set rhs (srl (and rm mask) count))
! (set count (mul QI 8 n))
(set mask (srl DI (inv 0) count))
(set rd (or DI rhs (sll DI (and rn mask) count))))))
--- 1120,1129 ----
(.str "mextr" n " $rm, $rn, $rd")
(+ (f-op op) rm (f-ext extop) rn rd (f-rsvd 0))
(sequence ((QI count) (DI mask) (DI rhs))
! (set count (mul QI 8 n))
(set mask (sll DI (inv 0) count))
(set rhs (srl (and rm mask) count))
! (set count (mul QI 8 (sub QI 8 n)))
(set mask (srl DI (inv 0) count))
(set rd (or DI rhs (sll DI (and rn mask) count))))))
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: RFA: sh64-media.cpu make-mextr bug fix (Was: PATCH/RFA]: SHmedia trampoline)
2003-01-16 23:52 RFA: sh64-media.cpu make-mextr bug fix (Was: PATCH/RFA]: SHmedia trampoline) Joern Rennecke
@ 2003-01-17 5:44 ` Ben Elliston
0 siblings, 0 replies; 2+ messages in thread
From: Ben Elliston @ 2003-01-17 5:44 UTC (permalink / raw)
To: cgen
>>>>> "Joern" == Joern Rennecke <amylaar@onetel.net.uk> writes:
>> Good catch. This bug remained undetected for such a long time because
>> it mirrors a bug in the cgen simulator.
Joern> This is the corresponding patch for cgen:
Joern> Thu Jan 16 22:08:57 2003 J"orn Rennecke <amylaar@onetel.net.uk>
Joern> * cpu/sh64-media.cpu (make-mextr): Fix setting of count.
Approved. Please commit it.
Ben
^ permalink raw reply [flat|nested] 2+ messages in thread
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2003-01-16 23:52 RFA: sh64-media.cpu make-mextr bug fix (Was: PATCH/RFA]: SHmedia trampoline) Joern Rennecke
2003-01-17 5:44 ` Ben Elliston
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