* Re: [Qemu-devel] [PATCH] tcg-optimize: Fold sub r,0,x to neg r,x
[not found] ` <CAAu8pHsNXkhxrZAiYpCNpsGgktA_T9vv1U6k0Ovcg1-AKdtyuw@mail.gmail.com>
@ 2013-03-20 0:13 ` Richard Henderson
2013-03-20 20:59 ` Blue Swirl
0 siblings, 1 reply; 2+ messages in thread
From: Richard Henderson @ 2013-03-20 0:13 UTC (permalink / raw)
To: Blue Swirl; +Cc: qemu-devel, aurelien
On 2013-02-23 08:43, Blue Swirl wrote:
>> Signed-off-by: Richard Henderson<rth@twiddle.net>
>> >---
>> > tcg/optimize.c | 33 ++++++++++++++++++++++++++++++++-
>> > 1 file changed, 32 insertions(+), 1 deletion(-)
>> >
>> >I noticed this while looking at other dumps. This seems like it
>> >should be considered independently of the other patch series.
> This breaks Sparc32 boot, only a few first instructions are executed.
>
I can't replicate any failure with the sparc-test image.
Can you expand on a method to replicate this?
r~
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] [PATCH] tcg-optimize: Fold sub r,0,x to neg r,x
2013-03-20 0:13 ` [Qemu-devel] [PATCH] tcg-optimize: Fold sub r,0,x to neg r,x Richard Henderson
@ 2013-03-20 20:59 ` Blue Swirl
0 siblings, 0 replies; 2+ messages in thread
From: Blue Swirl @ 2013-03-20 20:59 UTC (permalink / raw)
To: Richard Henderson; +Cc: qemu-devel, aurelien
On Wed, Mar 20, 2013 at 12:13 AM, Richard Henderson <rth@twiddle.net> wrote:
> On 2013-02-23 08:43, Blue Swirl wrote:
>>>
>>> Signed-off-by: Richard Henderson<rth@twiddle.net>
>>> >---
>>> > tcg/optimize.c | 33 ++++++++++++++++++++++++++++++++-
>>> > 1 file changed, 32 insertions(+), 1 deletion(-)
>>> >
>>> >I noticed this while looking at other dumps. This seems like it
>>> >should be considered independently of the other patch series.
>>
>> This breaks Sparc32 boot, only a few first instructions are executed.
>>
>
> I can't replicate any failure with the sparc-test image.
> Can you expand on a method to replicate this?
It was just with qemu-system-sparc -d in_asm. Unpatched can get to
OpenBIOS prompt, patched does not leave boot mode, PC always < 0x6000.
>
>
> r~
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] ` <CAAu8pHsNXkhxrZAiYpCNpsGgktA_T9vv1U6k0Ovcg1-AKdtyuw@mail.gmail.com>
2013-03-20 0:13 ` [Qemu-devel] [PATCH] tcg-optimize: Fold sub r,0,x to neg r,x Richard Henderson
2013-03-20 20:59 ` Blue Swirl
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