SPIRV-Cross/reference/shaders-msl/asm/comp/storage-buffer-basic.invalid.asm.comp
Hans-Kristian Arntzen d92de00cc1 Rewrite how IDs are iterated over.
This is a fairly fundamental change on how IDs are handled.
It serves many purposes:

- Improve performance. We only need to iterate over IDs which are
  relevant at any one time.
- Makes sure we iterate through IDs in SPIR-V module declaration order
  rather than ID space. IDs don't have to be monotonically increasing,
  which was an assumption SPIRV-Cross used to have. It has apparently
  never been a problem until now.
- Support LUTs of structs. We do this by interleaving declaration of
  constants and struct types in SPIR-V module order.

To support this, the ParsedIR interface needed to change slightly.
Before setting any ID with variant_set<T> we let ParsedIR know
that an ID with a specific type has been added. The surface for change
should be minimal.

ParsedIR will maintain a per-type list of IDs which the cross-compiler
will need to consider for later.

Instead of looping over ir.ids[] (which can be extremely large), we loop
over types now, using:

ir.for_each_typed_id<SPIRVariable>([&](uint32_t id, SPIRVariable &var) {
	handle_variable(var);
});

Now we make sure that we're never looking at irrelevant types.
2019-01-10 12:52:56 +01:00

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#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct _6
{
float _m0[1];
};
constant uint _3_tmp [[function_constant(0)]];
constant uint _3 = is_function_constant_defined(_3_tmp) ? _3_tmp : 1u;
constant uint _4_tmp [[function_constant(2)]];
constant uint _4 = is_function_constant_defined(_4_tmp) ? _4_tmp : 3u;
constant uint3 gl_WorkGroupSize = uint3(_3, 2u, _4);
kernel void main0(device _6& _8 [[buffer(0)]], device _6& _9 [[buffer(1)]], uint3 gl_WorkGroupID [[threadgroup_position_in_grid]])
{
_8._m0[gl_WorkGroupID.x] = _9._m0[gl_WorkGroupID.x] + _8._m0[gl_WorkGroupID.x];
uint3 _23 = gl_WorkGroupSize;
}