RFR: 8320725: C2: Add "requires_strict_order" flag for floating-point add-reduction [v10]

[Bhavana Kilambi]

On Fri, 24 May 2024 08:45:56 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Bhavana Kilambi has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Modify JTREG IR rules and some style/format changes
>
> test/hotspot/jtreg/compiler/vectorapi/TestVectorAddMulReduction.java line 181:
> 
>> 179: 
>> 180:     public static void main(String[] args) {
>> 181:         TestFramework.runWithFlags("-XX:-TieredCompilation",
> 
> Why `-XX:-TieredCompilation`?

I added that to enable c2 compilation but I just realized that this flag is whitelisted already and maybe not needed here.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18034#discussion_r1620563597