JIT ARM64-SVE: Implement IF_SVE_EG_3A, IF_SVE_EY_3A, IF_SVE_EZ_3A

[amanasifkhalid]

Part of #94549.

cstool output:

sdot  z1.s, z2.h, z0.h[0]
sdot  z3.s, z4.h, z1.h[1]
udot  z5.s, z6.h, z2.h[2]
udot  z7.s, z8.h, z3.h[3]
sdot  z9.s, z10.b, z4.b[0]
sdot  z11.s, z12.b, z5.b[1]
udot  z13.s, z14.b, z6.b[2]
udot  z15.s, z16.b, z7.b[3]
sudot z17.s, z18.b, z0.b[0]
sudot z19.s, z20.b, z1.b[1]
usdot z21.s, z22.b, z2.b[2]
usdot z23.s, z24.b, z3.b[3]

JitDisasm output:

sdot    z1.s, z2.h, z0.h[0]
sdot    z3.s, z4.h, z1.h[1]
udot    z5.s, z6.h, z2.h[2]
udot    z7.s, z8.h, z3.h[3]
sdot    z9.s, z10.b, z4.b[0]
sdot    z11.s, z12.b, z5.b[1]
udot    z13.s, z14.b, z6.b[2]
udot    z15.s, z16.b, z7.b[3]
sudot   z17.s, z18.b, z0.b[0]
sudot   z19.s, z20.b, z1.b[1]
usdot   z21.s, z22.b, z2.b[2]
usdot   z23.s, z24.b, z3.b[3]

cc @dotnet/arm64-contrib.

[ghost]

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Part of #94549.

cstool output:

sdot  z1.s, z2.h, z0.h[0]
sdot  z3.s, z4.h, z1.h[1]
udot  z5.s, z6.h, z2.h[2]
udot  z7.s, z8.h, z3.h[3]
sdot  z9.s, z10.b, z4.b[0]
sdot  z11.s, z12.b, z5.b[1]
udot  z13.s, z14.b, z6.b[2]
udot  z15.s, z16.b, z7.b[3]
sudot z17.s, z18.b, z0.b[0]
sudot z19.s, z20.b, z1.b[1]
usdot z21.s, z22.b, z2.b[2]
usdot z23.s, z24.b, z3.b[3]

JitDisasm output:

sdot    z1.s, z2.h, z0.h[0]
sdot    z3.s, z4.h, z1.h[1]
udot    z5.s, z6.h, z2.h[2]
udot    z7.s, z8.h, z3.h[3]
sdot    z9.s, z10.b, z4.b[0]
sdot    z11.s, z12.b, z5.b[1]
udot    z13.s, z14.b, z6.b[2]
udot    z15.s, z16.b, z7.b[3]
sudot   z17.s, z18.b, z0.b[0]
sudot   z19.s, z20.b, z1.b[1]
usdot   z21.s, z22.b, z2.b[2]
usdot   z23.s, z24.b, z3.b[3]

cc @dotnet/arm64-contrib.

Author:	amanasifkhalid
Assignees:	-
Labels:	area-CodeGen-coreclr, arch-arm64-sve
Milestone:	-

[ryujit-bot]

Diff results for #97900

Throughput diffs

Throughput diffs for linux/arm64 ran on windows/x64

MinOpts (-0.00% to +0.01%)

Collection	PDIFF
libraries.pmi.linux.arm64.checked.mch	+0.01%

Throughput diffs for windows/arm64 ran on windows/x64

MinOpts (-0.00% to +0.01%)

Collection	PDIFF
libraries.pmi.windows.arm64.checked.mch	+0.01%

Details here

---

[ryujit-bot]

Diff results for #97900

Throughput diffs

Throughput diffs for linux/arm64 ran on linux/x64

Overall (+0.00% to +0.01%)

Collection	PDIFF
benchmarks.run_pgo.linux.arm64.checked.mch	+0.01%
libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch	+0.01%
libraries_tests.run.linux.arm64.Release.mch	+0.01%
coreclr_tests.run.linux.arm64.checked.mch	+0.01%
benchmarks.run_tiered.linux.arm64.checked.mch	+0.01%

MinOpts (+0.00% to +0.04%)

Collection	PDIFF
benchmarks.run_pgo.linux.arm64.checked.mch	+0.02%
realworld.run.linux.arm64.checked.mch	+0.04%
libraries.pmi.linux.arm64.checked.mch	+0.01%
libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch	+0.02%
benchmarks.run.linux.arm64.checked.mch	+0.02%
libraries.crossgen2.linux.arm64.checked.mch	+0.01%
libraries_tests.run.linux.arm64.Release.mch	+0.02%
coreclr_tests.run.linux.arm64.checked.mch	+0.02%
benchmarks.run_tiered.linux.arm64.checked.mch	+0.02%

FullOpts (+0.00% to +0.01%)

Collection	PDIFF
libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch	+0.01%
coreclr_tests.run.linux.arm64.checked.mch	+0.01%

Details here

---

[kunalspathak]

LGTM