bd92e46204
This introduces `__builtin_hlsl_resource_getpointer`, which lowers to `llvm.dx.resource.getpointer` and is used to implement indexing into resources. This will only work through the backend for typed buffers at this point, but the changes to structured buffers should be correct as far as the frontend is concerned. Note: We probably want this to return a reference in the HLSL device address space, but for now we're just using address space 0. Creating a device address space and updating this code can be done later as necessary. Fixes #95956
26 lines
1.6 KiB
HLSL
26 lines
1.6 KiB
HLSL
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -emit-llvm -disable-llvm-passes -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK-DXIL
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// FIXME: SPIR-V codegen of llvm.spv.handle.fromBinding is not yet implemented
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// RUN-DISABLED: %clang_cc1 -triple spirv-vulkan-library -x hlsl -emit-llvm -disable-llvm-passes -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK-SPIRV
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// NOTE: SPIRV codegen for resource types is not yet implemented
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RWBuffer<float> Buf : register(u5, space3);
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// CHECK: %"class.hlsl::RWBuffer" = type { target("dx.TypedBuffer", float, 1, 0, 0) }
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// CHECK: @Buf = global %"class.hlsl::RWBuffer" zeroinitializer, align 4
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// CHECK: define linkonce_odr void @_ZN4hlsl8RWBufferIfEC2Ev(ptr noundef nonnull align 4 dereferenceable(4) %this)
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// CHECK-NEXT: entry:
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// CHECK: define internal void @_GLOBAL__sub_I_RWBuffer_constructor.hlsl()
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// CHECK-NEXT: entry:
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// CHECK-NEXT: call void @__cxx_global_var_init()
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// CHECK-NEXT: call void @_init_resource_bindings()
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// CHECK: define internal void @_init_resource_bindings() {
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// CHECK-NEXT: entry:
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// CHECK-DXIL-NEXT: %Buf_h = call target("dx.TypedBuffer", float, 1, 0, 0) @llvm.dx.handle.fromBinding.tdx.TypedBuffer_f32_1_0_0t(i32 3, i32 5, i32 1, i32 0, i1 false)
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// CHECK-DXIL-NEXT: store target("dx.TypedBuffer", float, 1, 0, 0) %Buf_h, ptr @Buf, align 4
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// CHECK-SPIRV-NEXT: %Buf_h = call target("dx.TypedBuffer", float, 1, 0, 0) @llvm.spv.handle.fromBinding.tdx.TypedBuffer_f32_1_0_0t(i32 3, i32 5, i32 1, i32 0, i1 false)
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// CHECK-SPIRV-NEXT: store target("dx.TypedBuffer", float, 1, 0, 0) %Buf_h, ptr @Buf, align 4
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