d92bac8a3e
Introduces a new address space `hlsl_constant(2)` for constant buffer declarations. This address space is applied to declarations inside `cbuffer` block. Later on, it will also be applied to `ConstantBuffer<T>` syntax and the default `$Globals` constant buffer. Clang codegen translates constant buffer declarations to global variables and loads from `hlsl_constant(2)` address space. More work coming soon will include addition of metadata that will map these globals to individual constant buffers and enable their transformation to appropriate constant buffer load intrinsics later on in an LLVM pass. Fixes #123406
34 lines
1.2 KiB
HLSL
34 lines
1.2 KiB
HLSL
// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.3-library %s \
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// RUN: -emit-llvm -disable-llvm-passes -o - | FileCheck %s
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// RUN: %clang_cc1 -finclude-default-header -triple spirv-pc-vulkan-library %s \
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// RUN: -emit-llvm -disable-llvm-passes -o - | FileCheck %s
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// CHECK: @a = external addrspace(2) externally_initialized global float, align 4
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// CHECK: @b = external addrspace(2) externally_initialized global double, align 8
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// CHECK: @c = external addrspace(2) externally_initialized global float, align 4
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// CHECK: @d = external addrspace(2) externally_initialized global double, align 8
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// CHECK: @[[CB:.+]] = external constant { float, double }
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cbuffer A : register(b0, space2) {
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float a;
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double b;
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}
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// CHECK: @[[TB:.+]] = external constant { float, double }
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tbuffer A : register(t2, space1) {
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float c;
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double d;
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}
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float foo() {
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// CHECK: load float, ptr addrspace(2) @a, align 4
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// CHECK: load double, ptr addrspace(2) @b, align 8
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// CHECK: load float, ptr addrspace(2) @c, align 4
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// CHECK: load double, ptr addrspace(2) @d, align 8
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return a + b + c*d;
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}
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// CHECK: !hlsl.cbufs = !{![[CBMD:[0-9]+]]}
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// CHECK: ![[CBMD]] = !{ptr @[[CB]], i32 13, i32 0, i1 false, i32 0, i32 2}
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