8 Commits

Author SHA1 Message Date
Justin Bogner
7f9ba1994a [DirectX] Fix two "not all control paths return a value" warnings
These switch statements are fully covered. Add an llvm_unreachable so
that compilers that don't recognize that don't warn.

Differential Revision: https://reviews.llvm.org/D154882
2023-07-10 15:34:15 -07:00
Xiang Li
944f4b2805 [DirectX backend] add support ConstantBuffer to DXILResource.h
class ConstantBuffer is added to save information for cbuffer.
Also add CBufferDataLayout to calculate the size for cbuffer.

Now always use legacy cbuffer layout.
https://reviews.llvm.org/D134998 will add control to disable legacy cbuffer layout.

Reviewed By: beanz

Differential Revision: https://reviews.llvm.org/D136031
2023-01-12 13:42:11 -05:00
Xiang Li
b861507912 [DIrectX backend] emit metadata for entry.
New named metadata "dx.entryPoints" is added to save all entries.

Each entry is in format of
!{ptr to function, name, signature, resource table, extra}

For compute shader, the extra will save num of threads in format of {i32 x, i32 y, i32 z}

For library profile, an empty entry will be added to save the resource table for the library.

Signature and resource table metadata is not generated yet.

Differential Revision: https://reviews.llvm.org/D131807
2022-12-21 14:56:27 -05:00
Xiang Li
13163dd8ab [HLSL] CodeGen hlsl resource binding.
''register(ID, space)'' like register(t3, space1) will be translated into
i32 3, i32 1 as the last 2 operands for resource annotation metadata.

NamedMetadata for CBuffers and SRVs are added as "hlsl.srvs" and "hlsl.cbufs".

Reviewed By: beanz

Differential Revision: https://reviews.llvm.org/D130951
2022-10-17 14:29:19 -07:00
Chris Bieneman
911d2dc230 [NFC] [HLSL] Move common metadata to LLVMFrontend
This change pulls some code from the DirectX backend into a new
LLVMFrontendHLSL library to share utility data structures between the
HLSL code generation in Clang and the backend in LLVM.

This is a small refactoring as a first start to get code into the
right structure and get the library built and dependencies correct.

Fixes #58000 (https://github.com/llvm/llvm-project/issues/58000)

Reviewed By: python3kgae

Differential Revision: https://reviews.llvm.org/D135110
2022-10-14 13:40:04 -05:00
Xiang Li
1fc78d66ea [DirectX backend] [NFC] Change Resources::write to const.
Change Resources::write to const.
Also fix parameter name.

Reviewed By: beanz

Differential Revision: https://reviews.llvm.org/D135705
2022-10-13 12:38:12 -07:00
Xiang Li
220185552f [DirectX backend] Add analysis to collect DXILResources
Now only DXILTranslateMetadata uses DXILResources, so DXILResourceWrapper is only used by DXILTranslateMetadata.
Once we add lower for createHandle, DXILResourceWrapper will be used in more passes.
Also we can add resource index allocation in DXILResourceWrapper.

Reviewed By: beanz

Differential Revision: https://reviews.llvm.org/D135190
2022-10-06 19:34:29 -07:00
Chris Bieneman
618e5006a5 [DirectX] Generate dx.resources metadata entry
This code adds initial support for generating the HLSL resources
metadata entries. It has a lot of `FIXMEs` laying around because there
is a lot more work to do here, but this lays a solid groundwork and can
accurately handle some trivial cases.

I've filed a swath of issues covering the deficiencies here and left the
issues in comments so that we can easily follow them.

One big change to make sooner rather than later is to move some of this
code into a new libLLVMFrontendHLSL so that we can share it with the
Clang CodeGen layer.

Reviewed By: python3kgae

Differential Revision: https://reviews.llvm.org/D134682
2022-10-04 12:36:39 -05:00