[Meta] Load/Store/Bitcast Handling of <X x i1> bool vectors

[RKSimon]

Bugzilla Link	31265
Version	trunk
OS	Windows NT
Depends On	#2156 #12990 #15587 #22977 #27974 #29963 #30653 #33753 #49286 #31626 #34868 #42148 #42791 #44247
CC	@topperc,@Delena,@hfinkel,@yuanfang-chen,@ZviRackover

Extended Description

Meta to cover all the issues uncovered with trying to handle vXi1 bit/bool vectors.

[delena]

Hi Simon,

What happens with this review:

[X86][SSE] Add support for extending bool vectors bitcasted from scalars
https://reviews.llvm.org/D35320 ?

[RKSimon]

Hi Simon,

What happens with this review:

[X86][SSE] Add support for extending bool vectors bitcasted from scalars
https://reviews.llvm.org/D35320 ?

I'm hoping to shortly get back on to my patches now that releases/holidays etc. are out of the way.

[ZviRackover]

mentioned in issue #30653

[ZviRackover]

mentioned in issue #31626

[llvmbot]

mentioned in issue #33753

[uweigand]

mentioned in issue #34868

[llvmbot]

mentioned in issue #42148

[kristate]

mentioned in issue #42791

[andrewrk]

mentioned in issue #44247

[Joemalle]

mentioned in issue #49286