RFR: 8344304: [s390x] ubsan: negation of -2147483648 cannot be represented in type 'int'

[Kim Barrett]

On Fri, 29 Nov 2024 11:08:45 GMT, Amit Kumar <amitkumar at openjdk.org> wrote:

> fixes the issue reported by ubsan.

src/hotspot/cpu/s390/c1_LIRAssembler_s390.cpp line 1542:

> 1540:                         __ z_slfi(lreg, c);
> 1541:                       }
> 1542:                       break;

Would it be simpler to use `java_negate(c)` (from globalDefinitions.hpp)?

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PR Review Comment: https://git.openjdk.org/jdk/pull/22456#discussion_r1863554225