[llvm] [X86] Added sincos vector lib codegen test coverage (PR #183702)

[Aadarsh Keshri via llvm-commits]

Aadarsh-Keshri wrote:

@RKSimon I tried the following parameters but no luck in any of them:

LIBMVEC: `error: no libcall available for fsincospi`
SVML: `error: no libcall available for fsincospi`
MASSV: `error: no libcall available for fsincospi`
ArmPL: `error: no libcall available for fsincospi`
Accelerate: `error: no libcall available for fsincospi`
Darwin_libsystem_m: `error: no libcall available for fsincospi`
sleefgnuabi: `error: no libcall available for fsincospi`
[All of the above failed on `-mcpu=x86-64` except ArmPL and sleefgnuabi. ArmPL and sleefgnuabi both failed on `-mcpu=x86-64-v3`.]

SLEEF: `llc: for the --vector-library option: Cannot find option named 'SLEEF'!`
SLEEFGNUABI: `llc: for the --vector-library option: Cannot find option named 'SLEEFGNUABI'!`
NoLibrary: `llc: for the --vector-library option: Cannot find option named 'NoLibrary'!`

https://github.com/llvm/llvm-project/pull/183702