Compiler/AWR1642: Same software get different result with different CGT version

Andy Yin

Part Number: AWR1642

Tool/software: TI C/C++ Compiler

Hi,

My customer add below case branch code in the function MmwDemo_mboxReadProc, then found their software can work on CGT7.4.16 and 8.2.6, while cannot work on CGT8.1.3 and 8.3.4. Changed the switch-case to if-else then their SW can also work on CGT8.1.3 and 8.3.4. Attachment include their function c and asm code, can u try to analysis and any free comments is welcome, thanks.

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/81/1261.code.7z

case MMWDEMO_MSS2DSS_ADCBUFCFG:
/* 配置ADC为连续波模式 */

if(1 == message.body.selfTest_En){
ADCBuf_close(gSrrDSSMCB.adcBufHandle);
/*****************************************************************************
* Open ADCBUF driver:
*****************************************************************************/
ADCBuf_Params_init(&adcBufParams);
adcBufParams.chirpThresholdPing = 1;
adcBufParams.chirpThresholdPong = 1;
adcBufParams.continousMode = 1;

/* Open ADCBUF driver */
gSrrDSSMCB.adcBufHandle = ADCBuf_open(0, &adcBufParams);
message.type = MMWDEMO_DSS2MSS_ADC_CONFIG_DONE;
message.body.selfTest_En = 1;
MmwDemo_mboxWrite(&message);
}
break;

Andy

over 6 years ago

0 Jitendra Gupta over 6 years ago

TI__Guru 69960 points

Hi Andy,

I would request Compiler team to look into this matter.

Regards,

Jitendra

0 Andy Yin over 6 years ago in reply to Jitendra Gupta

TI__Genius 9260 points

Jitendra,

thanks, i have already post it on CCS forum, pls help forward this post to compiler expert for help, thanks.

Andy

0 George Mock over 6 years ago

TI__Guru**** 249420 points

Andy Yin said:
found their software can work on CGT7.4.16 and 8.2.6, while cannot work on CGT8.1.3 and 8.3.4.

Please give a detailed description of what happens when things go wrong. How do you know it is not working? Precisely how do you see it?

Thanks and regards,

-George

0 Andy Yin over 6 years ago in reply to George Mock

TI__Genius 9260 points

George,

Thanks for your reply. Two phenomenons show our doubt on compiler.

1 if add the case branch shown in the above post, the software process result is not right using CGT8.1.3 and 8.3.4, while the process result is correct using CGT7.4.16 and 8.2.6.

2 If change the switch-case code in my attached file MmwDemo_mboxReadProc.c, then the process result is correct using the above four compiler version.

Based on above 2 points, we suspect there is problem on the compiler, here we also attached the assembly code compiled in different version for your reference.

Any debug comments is welcome, and look forward to your reply.

Thanks.

Andy

0 George Mock over 6 years ago in reply to Andy Yin

TI__Guru**** 249420 points

Andy Yin said:
1 if add the case branch shown in the above post, the software process result is not right using CGT8.1.3 and 8.3.4, while the process result is correct using CGT7.4.16 and 8.2.6.

What happens that makes you say the process result is not right? Exactly how do you see it?

Thanks and regards,

-George

0 Andy Yin over 6 years ago in reply to George Mock

TI__Genius 9260 points

George,

Customer tested in the software with same input data, the output is correct as expected using using CGT7.4.16 and 8.2.6, while not correct compared with their standard result.

I think there is no need for u to care about how about the result, can u help analysis why different version get different assembly code, suggest u check the assembly code I attached previous. Look forward to your free valuable comments.

Andy

0 George Mock over 6 years ago in reply to Andy Yin

TI__Guru**** 249420 points

This thread is being handled offline. When it is resolved, a summary will be posted here.

Thanks and regards,

-George

0 George Mock over 5 years ago in reply to George Mock

TI__Guru**** 249420 points

This issue continues to be handled offline.

Thanks and regards,

-George

0 George Mock over 5 years ago in reply to George Mock

TI__Guru**** 249420 points

This issue continues to be handled offline.

Thanks and regards,

-George

0 George Mock over 5 years ago in reply to George Mock

TI__Guru**** 249420 points

We still have not heard back from a key customer. I'm closing this thread for now. Depending on whether and when we hear back from a key customer, this thread may be re-opened.

Thanks and regards,

-George

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Compiler/AWR1642: Same software get different result with different CGT version