…was set explicitly (llvm#1482)

This is backported from a change made in
llvm/llvm-project#131181

---------

Co-authored-by: Morris Hafner <mhafner@nvidia.com>

…R attribute. (llvm#1467)

Started decorating CUDA shadow variables with the shadow_name CIR
attribute which will be used for registering the globals.

Closes llvm#1354.

Lower neon vcaltd_f64

… target was set explicitly" (llvm#1509)

Reverts llvm#1482

@mmha this is crashing on macos on asserts build:
```
FAIL: Clang :: CIR/Tools/cir-translate/warn-default-triple.cir (472 of 552)
******************** TEST 'Clang :: CIR/Tools/cir-translate/warn-default-triple.cir' FAILED ********************
Exit Code: 134

Command Output (stdout):
--
Assertion failed: (!DataLayoutString.empty() && "Uninitialized DataLayout!"), function getDataLayoutString, file TargetInfo.h, line 1282.
```

Perhaps besides picking a default you maybe need to do some missing
datalayout init?

llvm/llvm-project#132269

Ref:
llvm@cd269fe

Related: llvm#1497