Function local static array allocated to .data section, and not .bss

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    • Type: Bug
    • Resolution: Fixed
    • Priority: Medium
    • Code Generation Tools
    • CODEGEN-9779
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      The attached test case defines and uses a global array and a function local static array. Build it ...

      % tiarmclang -S file.c

      Inspect the assembly to see these lines for the definition of the static array ...

              .section        .data.fxn.static_array,"aw",%progbits
        .p2align        2
fxn.static_array:
        .zero   400

      Compare that to the definition of the global array ...

              .comm   global_array,400,4

      It's in the common section, which eventually becomes .bss.

      The 400 bytes of zero in the .data section is a waste of memory. It would be better for the static array to be in .bss, and then get zero initialized by the startup code.

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            TI User
            Reporter:
            TI User
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              Created:
              Updated:
              Resolved:

                Connection: Intermediate to External PROD System
                EXTSYNC-3305 - Function local static array allocat...
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