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Add transform::VarForDynamicIndex

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Use this as part of the Spirv sanitizer.
Cleans up buggy dynamic array indexing logic in the SPIR-V writer.

Fixed: tint:824
Change-Id: Ia408e49bd808bc8dbf3a1897eb47f9b33b71fdfb
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/51780
Commit-Queue: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
This commit is contained in:
Ben Clayton
2021-05-20 11:55:28 +00:00
committed by Tint LUCI CQ
parent c5f5d3641c
commit 9e32b20096
15 changed files with 563 additions and 150 deletions
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11
test/samples/triangle.wgsl.expected.spvasm
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@@ -16,6 +16,7 @@
OpName %tint_symbol_3 "tint_symbol_3"
OpName %tint_symbol_1 "tint_symbol_1"
OpName %vtx_main "vtx_main"
OpName %var_for_array "var_for_array"
OpName %tint_symbol_6 "tint_symbol_6"
OpName %tint_symbol_4 "tint_symbol_4"
OpName %frag_main "frag_main"
@@ -52,7 +53,7 @@
%29 = OpTypeFunction %void
%float_1 = OpConstant %float 1
%_ptr_Function__arr_v2float_uint_3 = OpTypePointer Function %_arr_v2float_uint_3
%36 = OpConstantNull %_arr_v2float_uint_3
%35 = OpConstantNull %_arr_v2float_uint_3
%_ptr_Function_v2float = OpTypePointer Function %v2float
%50 = OpConstantComposite %v4float %float_1 %float_0 %float_0 %float_1
%tint_symbol_3 = OpFunction %void None %24
@@ -63,16 +64,16 @@
OpFunctionEnd
%vtx_main = OpFunction %void None %29
%31 = OpLabel
%35 = OpVariable %_ptr_Function__arr_v2float_uint_3 Function %36
%var_for_array = OpVariable %_ptr_Function__arr_v2float_uint_3 Function %35
OpStore %tint_pointsize %float_1
OpStore %35 %pos
OpStore %var_for_array %pos
%37 = OpLoad %int %tint_symbol
%39 = OpAccessChain %_ptr_Function_v2float %35 %37
%39 = OpAccessChain %_ptr_Function_v2float %var_for_array %37
%40 = OpLoad %v2float %39
%41 = OpCompositeExtract %float %40 0
%42 = OpCompositeExtract %float %40 1
%43 = OpCompositeConstruct %v4float %41 %42 %float_0 %float_1
%33 = OpFunctionCall %void %tint_symbol_3 %43
%36 = OpFunctionCall %void %tint_symbol_3 %43
OpReturn
OpFunctionEnd
%tint_symbol_6 = OpFunction %void None %24