Changes

new altera single work item barrier check

This lint check is a part of the FLOCL (FPGA Linters for OpenCL)
project out of the Synergy Lab at Virginia Tech.

FLOCL is a set of lint checks aimed at FPGA developers who write code
in OpenCL.

The altera single work item barrier check finds OpenCL kernel functions
that call a barrier function but do not call an ID function. These
kernel functions will be treated as single work-item kernels, which
could be inefficient or lead to errors.

Based on the "Altera SDK for OpenCL: Best Practices Guide."

[LLDB] Unbreak the build after recent clang changes

9e08e51a20d0d2b1c5724bb17e969d036fced4cd introduced a new enum case.

No longer reject tag declarations in the clause-1 of a for loop.

We currently reject this valid C construct by claiming it declares a
non-local variable: for (struct { int i; } s={0}; s.i != 0; s.i--) ;

We expected all declaration in the clause-1 declaration statement to be
a local VarDecl, but there can be other declarations involved such as a
tag declaration. This fixes PR35757.

[gn build] Port e69e551e0e5

[NFC][SVE] Clean up bfloat isel patterns that emit non-bfloat instructions.

During isel there's no need to protect illegal types. Patch also
adds a missing unit test for tbl2 intrinsic using bfloat types.

Differential Revision: https://reviews.llvm.org/D93404

[AArch64] Fix Copy Elemination for negative values

Redundant Copy Elimination was eliminating a MOVi32imm -1 when it
determined that the value of the destination register is already -1.
However, it didn't take into account that the MOVi32imm zeroes the upper
32 bits (which are FFFFFFFF) and therefore cannot be eliminated.

Reviewed By: paulwalker-arm

Differential Revision: https://reviews.llvm.org/D93100

Revert "[ARM] Match dual lane vmovs from insert_vector_elt"

This one needed more testing.