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Compiler/TMS320F28377D:

tonyo
Intellectual 385 points
Part Number: TMS320F28377D

Tool/software: TI C/C++ Compiler

hi, I recently upgraded from 17.9 to 19.6 and got this error message:

>> ../source/motor/motor_current.cpp, line 37: 
INTERNAL ERROR: >>>Register allocation failed:
Average(std::vector<float, std::allocator<float>>)


This may be a serious problem. Please contact customer support with a
description of this problem and a sample of the source files that caused this
INTERNAL ERROR message to appear.

Cannot continue compilation - ABORTING!

from this code:

float Average(std::vector<float> v)
{ float sum=0.0;
for(int i=0;i<v.size();i++)
sum+=v[i];
return sum/v.size();
}

all optimization is turned off.

  • 0
    Guru 92251 points

    I can repeat the failure, using the attached CCS project containing the same function:

    **** Build of configuration Debug for project TMS320F28_cpp_internal_error ****

/home/mr_halfword/ti/ccs910/ccs/utils/bin/gmake -k -j 12 all -O 
 
Building file: "../main.cpp"
Invoking: C2000 Compiler
"/home/mr_halfword/ti/ccs910/ccs/tools/compiler/ti-cgt-c2000_19.6.0.STS/bin/cl2000" -v28 -ml -mt --cla_support=cla1 --float_support=fpu32 --tmu_support=tmu0 --vcu_support=vcu2 --fp_mode=strict --include_path="/home/mr_halfword/workspace_v9/TMS320F28_cpp_internal_error" --include_path="/home/mr_halfword/ti/ccs910/ccs/tools/compiler/ti-cgt-c2000_19.6.0.STS/include" -g --diag_warning=225 --diag_wrap=off --display_error_number --abi=coffabi --preproc_with_compile --preproc_dependency="main.d_raw"  "../main.cpp"
 
>> Compilation failure
subdir_rules.mk:7: recipe for target 'main.obj' failed
"../main.cpp", line 9 (col. 15): advice #2614-D: (Performance) Use --fp_mode=relaxed to enable TMU hardware support for FP division.
>> ../main.cpp, line 9: INTERNAL ERROR: >>>Register allocation failed:
                        Average(std::vector<float, std::allocator<float>>)
 
 
This may be a serious problem.  Please contact customer support with a
description of this problem and a sample of the source files that caused this
INTERNAL ERROR message to appear.
 
Cannot continue compilation - ABORTING!
 
gmake: *** [main.obj] Error 1
gmake: Target 'all' not remade because of errors.

    TMS320F28_cpp_internal_error.zip

  • 0 in reply to Chester Gillon
    TI__Guru**** 249380 points

    Thank you for reporting this problem.  Thanks to the test case from Chester Gillon, I am able to reproduce the behavior.  I filed the entry CODEGEN-6477 in the SDOWP system to have this investigated.  You are welcome to follow it with the SDOWP link below in my signature.

    Thanks and regards,

    -George

  • 0
    TI__Expert 4930 points

    A workaround is to make a local variable to hold the value of v.size(), and use that variable in place of the two calls to v.size().