GCC 4.4.1 issue

[keshav yadav]

Thanks Andrew for your answer,

if we use gcc 4.2.0 then there is no problem. So will you pls let us
know how to fix this.

arm-linux-gnueabi-gcc_4.2.0   test.c -O
If we do not use optimisation flag '-O' this also result in same error.

Is there any way to fix this issue.

Thanks a lot



On Wed, Jul 7, 2010 at 2:29 PM, Andrew Haley <aph@redhat.com> wrote:
> On 07/07/2010 07:54 AM, keshav yadav wrote:
>>
>> We Build tool chain for ARM architecture(cortex A8) and when we build
>> below code we face Build error.
>>
>>
>>
>> arm-none-linux-gnueabi-gcc  test.c
>>
>> test.c: In function 'main':
>> test.c:13: error: can't find a register in class 'GENERAL_REGS' while
>> reloading 'asm'
>> test.c:13: error: 'asm' operand has impossible constraints
>>
>>
>> test.c
>> int main(void)
>> {
>>         unsigned int u32PosFrac;
>>         int s32PosInt;
>>         int s16CoeffOrg[100][100];
>>         unsigned int u32In3[(1024>>2)+4];
>>         unsigned int* pu8In4;  //pu8In4 = (UInt8*)u32In3;
>>         unsigned char*  u8Out;
>>         unsigned int u32Step;
>>         unsigned int u32TgtWidth;
>>         asm volatile (
>>                 "\n\t"
>>                                 :
>>                                 : "r" (pu8In4), "r" (s32PosInt), "r"
>> (s16CoeffOrg), "r" (u32PosFrac), "r" (u8Out), "r" (u32Step), "r"
>> (u32TgtWidth)
>>                                 : "r2", "r3", "r4", "r5", "r6", "r7", "r8"
>>                                 );
>>         return 1;
>> }
>>
>>
>>
>> Will you please let me know the reason and fix for this.
>
> Surely you've run out of registers.
>
> Andrew.
>
>