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  1. JDK
  2. JDK-8269122

The use of "extern const" for Register definitions generates poor code

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    • b04
    • generic
    • generic

    Description

      Register definitions in HotSpot are declared as "extern const"
      for ancient-historical reasons. We should stop doing that: it would
      make the assembler significantly faster and smaller, improving both
      bootstrap time and compilation speed.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8270083 -Wnonnull errors happen with GCC 11.1.1

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8270140 Improve Register class implementation

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Enhancement - null JDK-8282085 The REGISTER_DEFINITION macro is useless after JDK-8269122

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8271869 AArch64: build errors with GCC11 in frame::saved_oop_result

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          links to

          Commit Commit openjdk/jdk/4d2412ef

          Review Review openjdk/jdk/4554

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              aph Andrew Haley
              aph Andrew Haley
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