On Fri, 12 May 2023 21:56:50 GMT, Kim Barrett <[email protected]> wrote:
>> JoKern65 has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> cosmetic changes
>
> src/hotspot/cpu/ppc/ppc.ad line 11444:
>
>> 11442: effect(KILL cr0);
>> 11443: ins_cost(DEFAULT_COST * 5);
>> 11444: size((VM_Version::has_brw() ? 16 : 20));
>
> What is it complaining about here?
/data/d042520/xlc17/jdk/src/hotspot/cpu/ppc/c1_LIRGenerator_ppc.cpp:426:97:
error: shifting a negative signed value is undefined
[-Werror,-Wshift-negative-value]
I reverted my change in c1_LIRGenerator_ppc.cpp and added shift-negative-value
to the DISABLED_WARNINGS_clang in CompileJvm.gmk.
ad_ppc.cpp:18388:10: error: converting the result of '?:' with integer
constants to a boolean always evaluates to 'true'
[-Werror,-Wtautological-constant-compare]
assert(VerifyOops || MachNode::size(ra_) <= VM_Version::has_brw() ? 16 : 20,
"bad fixed size");
^
Should I also add tautological-constant-compare to DISABLED_WARNINGS_clang in
CompileJvm.gmk or where else?
-------------
PR Review Comment: https://git.openjdk.org/jdk/pull/13953#discussion_r1193506933
