[all-commits] [llvm/llvm-project] ebe9c7: [HLSL] CodeGen hlsl cbuffer/tbuffer.

[Xiang Li via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ebe9c7f3e2da779b984b336dadf37cc4ec2ae260
      https://github.com/llvm/llvm-project/commit/ebe9c7f3e2da779b984b336dadf37cc4ec2ae260
  Author: Xiang Li <python3kgae at outlook.com>
  Date:   2022-10-12 (Wed, 12 Oct 2022)

  Changed paths:
    M clang/lib/CodeGen/CGDecl.cpp
    M clang/lib/CodeGen/CGHLSLRuntime.cpp
    M clang/lib/CodeGen/CGHLSLRuntime.h
    M clang/lib/CodeGen/CodeGenModule.cpp
    A clang/test/CodeGenHLSL/cbuf.hlsl
    A clang/test/CodeGenHLSL/cbuf_in_namespace.hlsl
    A clang/test/CodeGenHLSL/static_global_and_function_in_cb.hlsl

  Log Message:
  -----------
  [HLSL] CodeGen hlsl cbuffer/tbuffer.

cbuffer A {
  float a;
  float b;
}

will be translated to a global variable.

Something like

struct CB_Ty {
  float a;
  float b;
};

CB_Ty A;

And all use of a and b will be replaced with A.a and A.b.

Only support none-legacy cbuffer layout now.
CodeGen for Resource binding will be in separate patch.
In the separate patch, resource binding will map the resource information to the global variable.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D130131