On 01/23/15 14:46, Andrew Stubbs wrote:
SECONDARY_INPUT_RELOAD_CLASS is another missed opportunity. Just like
the legitimate address stuff, this has checks for the various VFP
classes, but reload detects the class in the same flawed way, so an
integer reload gives GENERAL_REGS even when the dest
On 23/01/15 16:34, Jeff Law wrote:
Just for reference, the PA allows a 14 bit displacement in memory
addresses which use integer registers, but only a 5 bit displacement for
FP registers. Other than the displacement amounts, I suspect this is
the same core problem you have on your port.
Yes, t
On 01/23/15 06:46, Andrew Stubbs wrote:
How does reload ensure that an SImode value (re)loaded into an FP
register has a valid stack index?
The FP load instruction allows a smaller index range than the integer
equivalent, but nothing checks the destination register, only the source
mode.
Unfo
On 23 January 2015 at 13:46, Andrew Stubbs wrote:
> How does reload ensure that an SImode value (re)loaded into an FP register
> has a valid stack index?
You could use CANNOT_CHANGE_MODE_CLASS, or request secondary reload.
For the latter, you can look at the memory/pseudo to decide if the
address
On 06/22/10 08:52, Revital1 Eres wrote:
Hello,
I have a question regarding code generation for a new target I'm working
on.
I am using GCC 4.6.
In reload pass the following first instruction is replaced with the
second one after spilling reg 182 to the stack. The problem is that
the generated
2008/5/29 <[EMAIL PROTECTED]>:
> Again thank you and Denis for your comment.
>
> Here is what I deduce from code and Denis comments - I am sure he (and
> others) will correct me if wrong :-)
>
>
> The main issue is that we have one pointer register that cannot take offset
> and two base pointers
kov <[EMAIL PROTECTED]>
To: Jeff Law <[EMAIL PROTECTED]>
Cc: Andy H <[EMAIL PROTECTED]>; GCC Development ;
[EMAIL PROTECTED]
Sent: Thu, 29 May 2008 3:23 am
Subject: Re: Help with reload and naked constant sum causing ICE
2008/5/29 Jeff Law <[EMAIL PROTECTED]>:
Ric
2008/5/29 Jeff Law <[EMAIL PROTECTED]>:
> Richard Sandiford wrote:
>>
>> Andy H <[EMAIL PROTECTED]> writes:
If L_R_A does nothing with it,
the normal reload handling will first try:
(const:HI (plus:HI (symbol_ref:HI ("chk_fail_buf") (const_int 2
>>>
>>> This worke
Richard Sandiford wrote:
Andy H <[EMAIL PROTECTED]> writes:
If L_R_A does nothing with it,
the normal reload handling will first try:
(const:HI (plus:HI (symbol_ref:HI ("chk_fail_buf") (const_int 2
This worked just as your described after I added test of
reg_equiv_constant[] inside L_
[EMAIL PROTECTED] writes:
> I have copied Anatoly for comment, and I promise to revisit this again
> after reviewing reload capabilities.
Thanks.
Looking back, my message sounded like I was holding you personally
responsible for the current AVR macro. Didn't mean to do that ;)
Richard
May 2008 3:00 pm
Subject: Re: Help with reload and naked constant sum causing ICE
Andy H <[EMAIL PROTECTED]> writes:
If L_R_A does nothing with it,
the normal reload handling will first try:
(const:HI (plus:HI (symbol_ref:HI ("chk_fail_buf") (const_int 2
This worked just as
Andy H <[EMAIL PROTECTED]> writes:
>> If L_R_A does nothing with it,
>> the normal reload handling will first try:
>>
>> (const:HI (plus:HI (symbol_ref:HI ("chk_fail_buf") (const_int 2
>>
>
> This worked just as your described after I added test of
> reg_equiv_constant[] inside L_R_A .
>
If L_R_A does nothing with it,
the normal reload handling will first try:
(const:HI (plus:HI (symbol_ref:HI ("chk_fail_buf") (const_int 2
This worked just as your described after I added test of
reg_equiv_constant[] inside L_R_A .
So I guess that looks like the fix for bug I post
Thank you very much for reply. reload is such a lonely place!
TBH, it sounds like the opposite: LEGITIMIZE_RELOAD_ADDRESS should
not be handling this address at all.
Yes but reload will not do anything before call to L_R_A. So in practice
that would mean L_R_A has
to check reg_equiv_constant[re
Andy H <[EMAIL PROTECTED]> writes:
> I am am tracking down ICE bug in reload during global register allocation.
>
> I have managed to find root of problem but I am not sure how it should
> work correctly. I would appreciate anyones advise on this.
>
> ICE is from assert in push_reload to ensure
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