RFR: 8291809: Convert compiler/c2/cr7200264/TestSSE2IntVect.java to IR verification test [v2]

[Roberto Castañeda Lozano]

On Wed, 24 Jan 2024 15:03:28 GMT, Daniel Lundén <dlunden at openjdk.org> wrote:

>> Should we also add checks for these vectors (same for `test_divc_n()`)?
>
> @chhagedorn: Do you mean that `test_divc` and `test_divc_n` vectorize after JDK-8282365? They don't vectorize on my machine (on this PR).

I just checked on my machine (on top of commit fb822e49f2a84423c8fd17db2e95bbdd5e7ec191) and these division tests do seem to vectorize, this is e.g. the innermost loop in `test_divc` right before code emission:

![test_divc](https://github.com/openjdk/jdk/assets/8792647/129d51c2-a1ad-4d02-ab81-02cd849af36f)

Here are my processor features in case it helps (subset of `lscpu` output):


Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         39 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  12
  On-line CPU(s) list:   0-11
Vendor ID:               GenuineIntel
  Model name:            Intel(R) Core(TM) i7-9850H CPU @ 2.60GHz
    CPU family:          6
    Model:               158
    Thread(s) per core:  2
    Core(s) per socket:  6
(...)
    Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mc
                         a cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss 
                         ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art
                          arch_perfmon pebs bts rep_good nopl xtopology nonstop_
                         tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cp
                         l vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid ss
                         e4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes 
                         xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_f
                         ault epb invpcid_single ssbd ibrs ibpb stibp ibrs_enhan
                         ced tpr_shadow flexpriority ept vpid ept_ad fsgsbase ts
                         c_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed ad
                         x smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsav
                         es dtherm ida arat pln pts hwp hwp_notify hwp_act_windo
                         w hwp_epp vnmi md_clear flush_l1d arch_capabilities
(...)

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PR Review Comment: https://git.openjdk.org/jdk/pull/17428#discussion_r1465971933