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Success Build clang-r362920-t57388-b57388.tar.gz (Jun 9, 2019 10:35:32 PM)


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Build Log

Revision: 362564
  1. [X86] When promoting i16 compare with immediate to i32, try to use sign_extend for eq/ne if the input is truncated from a type with enough sign its.

    Our default behavior is to use sign_extend for signed comparisons and zero_extend for everything else. But for equality we have the freedom to use either extension. If we can prove the input has been truncated from something with enough sign bits, we can use sign_extend instead and let DAG combine optimize it out. A similar rule is used by type legalization in LegalizeIntegerTypes.

    This gets rid of the movzx in PR42189. The immediate will still take 4 bytes instead of the 2 bytes plus 0x66 prefix a cmp di, 32767 would get, but it avoids a length changing prefix.

    Reviewers: RKSimon, spatel, xbolva00

    Reviewed By: xbolva00

    Subscribers: hiraditya, llvm-commits

    Tags: #llvm

    Differential Revision: (detail)
    by ctopper
  2. [X86] Disable f32->f64 extload when sse2 is enabled

    We can only use the memory form of cvtss2sd under optsize due to a partial register update. So previously we were emitting 2 instructions for extload when optimizing for speed. Also due to a late optimization in preprocessiseldag we had to handle (fpextend (loadf32)) under optsize.

    This patch forces extload to expand so that it will always be in the (fpextend (loadf32)) form during isel. And when optimizing for speed we can just let each of those pieces select an instruction independently.

    Reviewers: spatel, RKSimon

    Reviewed By: RKSimon

    Subscribers: hiraditya, llvm-commits

    Tags: #llvm

    Differential Revision: (detail)
    by ctopper
  3. Do not derive no-recurse attribute if function does not have exact definition.
    This is fix for

    Reviewers: jdoerfert
    Reviewed by: jdoerfert

    Differential Revision: (detail)
    by vivekvpandya

Started by upstream project relay-lnt-ctmark build number 8568
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