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Enable AVR as a Tier 3 target upstream #69478

Merged
merged 9 commits into from
Jun 12, 2020
Merged

Enable AVR as a Tier 3 target upstream #69478

merged 9 commits into from
Jun 12, 2020

Commits on Jun 9, 2020

  1. [AVR] Add AVR platform support

    @shepmaster @dylanmckay
    shepmaster authored and dylanmckay committed Jun 9, 2020
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  2. [AVR] Fix debug printing of function pointers 

    This commit fixes debug printing of function pointers on AVR. AVR does
not support `addrspacecast` instructions, and so this patch modifies
libcore so that a `ptrtoint` IR instruction is used and the address
space cast is avoided.
    @dylanmckay
    dylanmckay committed Jun 9, 2020
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  3. [AVR] Add required references for AVR to the parser test suites

    @dylanmckay
    dylanmckay committed Jun 9, 2020
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  4. [AVR] Raise and link to a tracking issue for the avr-interrupt call… 

    …ing convention

Also fix the order of the feature gate to fix the tidy errors.
    @dylanmckay
    dylanmckay committed Jun 9, 2020
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  5. [AVR] Re-bless the UI tests 

    Patch generated with `./x.py test --stage 1 src/test/ui/feature-gates --bless`.
    @dylanmckay
    dylanmckay committed Jun 9, 2020
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  6. [AVR] Update the compiletest library to recognize AVR as a 16-bit target

    @dylanmckay
    dylanmckay committed Jun 9, 2020
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  7. [AVR] Remove AVR-specific logic from libstd 

    It is not possible to compile libstd for AVR anyway.
    @dylanmckay
    dylanmckay committed Jun 9, 2020
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  8. [AVR] Rename the 'none_base' target spec module to 'freestanding_base'

    @dylanmckay
    dylanmckay committed Jun 9, 2020
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  9. [AVR] Update ABI type classification logic to match the the AVR-Clang… 

    … ABI

This patch brings the AVR calling convention argument classification
logic in line with AVR Clang's behaviour.

AVR-Clang currently uses the `clang::DefaultABIInfo` ABI implementation.
This calling convention promotes all aggregates to indirect, no matter their
size.

It is also unnecessary to perform any integer width extension for AVR as
the minimum argument size matches the minimum describable size of
abi::Primitive::Int - 8 bits.

At some point in the future, an AVR-GCC compatible argument
classification implementation should be adopted in both Clang and Rust.
    @dylanmckay
    dylanmckay committed Jun 9, 2020
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