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9b54a2e53c
This change implements pointers and references as described by the WGSL specification change in https://github.com/gpuweb/gpuweb/pull/1569. reader/spirv: * Now emits address-of `&expr` and indirection `*expr` operators as needed. * As an identifier may now resolve to a pointer or reference type depending on whether the declaration is a `var`, `let` or parameter, `Function::identifier_values_` has been changed from an ID set to an ID -> Type* map. resolver: * Now correctly resolves all expressions to either a value type, reference type or pointer type. * Validates pointer / reference rules on assignment, `var` and `let` construction, and usage. * Handles the address-of and indirection operators. * No longer does any implicit loads of pointer types. * Storage class validation is still TODO (crbug.com/tint/809) writer/spirv: * Correctly handles variables and expressions of pointer and reference types, emitting OpLoads where necessary. test: * Lots of new test cases Fixed: tint:727 Change-Id: I77d3281590e35e5a3122f5b74cdeb71a6fe51f74 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50740 Commit-Queue: Ben Clayton <bclayton@chromium.org> Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: David Neto <dneto@google.com>
27 lines
831 B
Plaintext
27 lines
831 B
Plaintext
; SPIR-V
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; Version: 1.3
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; Generator: Google Tint Compiler; 0
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; Bound: 15
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; Schema: 0
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OpCapability Shader
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OpMemoryModel Logical GLSL450
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OpEntryPoint GLCompute %main "main"
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OpExecutionMode %main LocalSize 1 1 1
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OpName %main "main"
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%void = OpTypeVoid
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%1 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v3float = OpTypeVector %float 3
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%float_1 = OpConstant %float 1
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%float_2 = OpConstant %float 2
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%float_3 = OpConstant %float 3
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%10 = OpConstantComposite %v3float %float_1 %float_2 %float_3
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%v2float = OpTypeVector %float 2
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%main = OpFunction %void None %1
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%4 = OpLabel
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%11 = OpCompositeExtract %float %10 1
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%13 = OpVectorShuffle %v2float %10 %10 0 2
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%14 = OpVectorShuffle %v3float %10 %10 0 2 1
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OpReturn
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OpFunctionEnd
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