RFR: 8330242: RISC-V: Simplify and remove CORRECT_COMPILER_ATOMIC_SUPPORT in atomic_linux_riscv.hpp

Tue Apr 16 10:24:00 UTC 2024

On Mon, 15 Apr 2024 07:57:23 GMT, Gui Cao <gcao at openjdk.org> wrote:

> Previously, we fixed JDK-8326936 with a workaround for one GCC bug [1]. We define a new `CORRECT_COMPILER_ATOMIC_SUPPORT` macro when building with GCC >= 14. Now this bug has been fixed in gcc trunk and has been backported to GCC-13 branch. The `__atomic_compare_exchange` atomic operation will be usable for the next GCC-13.3 release. So we should relax the condition and require GCC > 13.2. This will also help remove `CORRECT_COMPILER_ATOMIC_SUPPORT` macro and reuse a single `FULL_COMPILER_ATOMIC_SUPPORT` macro.
> 
> [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114130

Thanks!

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Marked as reviewed by rehn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18780#pullrequestreview-2003233230