This PR forces the external definition of SV_GroupID variables to 3-vectors.
The conversion process between the shader-declared type and the external type
happens in wrapped main IO variable conversion.

The same applies to SV_DispatchThreadID and SV_GroupThreadID.

Fixes: #1371

Skip outermost array when assigning locations to auto-array interfaces

We want these tests to be independent of whether SPIRV-opt is used.

When assigning a location to an interface whose stage automatically
converts the interfaces to an array, it now strips off the outermost
array from the type before calculating how many locations it consumes.

Fix #944: Convert argument type to match formal parameter type.

Update spirv-opt known-good

Notably, this includes the following:

- Fix exponential performance of DeadInsertElim
- Constant folding of OpVectorTimesScalar
- Add Vector DCE
- Add store-store elimination to LocalSingleBlockElim
- Improve folding of OpVectorTimesScalar and OpPhi
- Fixes handling of kill and unreachable ops in inlining

Fixed install for SPIRV, glslang, and hlsl when building shared libs

Fix issue #1367 - change the I/O remapper to ignore push constants so…

Fix issue #1367 - change the I/O remapper to ignore push constants so it does not apply a binding/descriptor set to them.

Update known-good.

Notably, reduces spirv-opt time and adds folding of OpDot and OpFNegate.

Initial way of addressing #1362.

Add AMD float16/int16 SPV extension string when GLSL specifies them

exp operand

Update spirv-opt known good

Fix issue #1350 - set the node type to match the atomic TIntermAggreg…

This patch makes  the validator accept *.<stage name>.[g/h]lsl pattern
for file names.

This patch preserves previous behavior (i.e. *.vert/*.frag/etc. in file
names still work).

Fix issue #1350 - set the node type to match the atomic TIntermAggregate node type so that AtomicSMin/Max is not generated with a result type of void.

Changes include:
    Fix SSA rewrite for nested loops.
    Add support for two new extensions:
    - SPV_NV_shader_subgroup_partitioned
    - SPV_EXT_descriptor_indexing
    Legalize OpImageTexelPointer
    Copy propagate arrays