codegen emit constant data as llvm constants

[vtjnash]

this allows llvm to optimize constant data access
fix #21121

[JeffBezanson]

Any effect on sysimg size?

[vtjnash]

@nanosoldier runbenchmarks(ALL, vs=":master")

[vtjnash]

Doesn't seem to be significant

[nanosoldier]

Your benchmark job has completed - possible performance regressions were detected. A full report can be found here. cc @jrevels

[vtjnash]

@nanosoldier runbenchmarks(ALL, vs=":master")

[nanosoldier]

Your benchmark job has completed - possible performance regressions were detected. A full report can be found here. cc @jrevels

[ararslan]

Are the SIMD regressions for a reason similar to that in #21279?

[vtjnash]

AFAICT, the generate code is identical and those are just noise. But might as well ask @nanosoldier runbenchmarks("simd", vs=":master")

[nanosoldier]

Your benchmark job has completed - no performance regressions were detected. A full report can be found here. cc @jrevels