external/vulkancts/data/vulkan/amber/graphicsfuzz/loops-breaks-returns.amber

#!amber

# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


# A test for a bug found by GraphicsFuzz.

# Short description: A compute shader with loops, breaks, returns

# The test passes because the shader immediately writes 42 to the 0th position
# in the SSBO and that is the only thing we check. All loops terminate. All
# other writes to the SSBO are at indices greater than 0.

# Optimized using spirv-opt with the following arguments:
# '--eliminate-dead-code-aggressive'
# '--simplify-instructions'
# '--redundancy-elimination'
# '--copy-propagate-arrays'
# '--convert-local-access-chains'
# '--eliminate-dead-branches'
# '--eliminate-local-multi-store'
# '--eliminate-local-multi-store'
# '--eliminate-dead-inserts'
# '--eliminate-local-single-block'
# '--redundancy-elimination'
# '--eliminate-dead-branches'
# spirv-opt commit hash: 4a00a80c40484a6f6f72f48c9d34943cf8f180d4



# variant_compute_shader is derived from the following GLSL:
# #version 310 es
#
# layout(std430, binding = 0) buffer theSSBO
# {
#   uint data_out[5];
# };
#
# layout(set = 0, binding = 1) uniform buf0 {
#   vec2 injectionSwitch;
# };
#
# layout(local_size_x = 100, local_size_y = 1, local_size_z = 1) in;
#
# void main()
# {
#   data_out[0] = 42u;
#   uint gid = uint(injectionSwitch.y); // 1
#   do
#   {
#     if (1u != gid) // always false
#     {
#       data_out[1] = 1u;
#       return;
#     }
#   } while (false);
#
#   uint d;
#   while (true)
#   {
#     if (d != 0u)
#     {
#       data_out[1] = 2u;
#       for (int i = 0; i < 1; ++i)
#       {
#         data_out[1] = 3u;
#         return;
#       }
#     }
#     break;
#   }
#   data_out[gid] = 7u; // gid == 1
# }
SHADER compute variant_compute_shader SPIRV-ASM
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 7
; Bound: 86
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %4 "main"
               OpExecutionMode %4 LocalSize 100 1 1
               OpSource ESSL 310
               OpName %4 "main"
               OpName %9 "theSSBO"
               OpMemberName %9 0 "data_out"
               OpName %11 ""
               OpName %18 "gid"
               OpName %21 "buf0"
               OpMemberName %21 0 "injectionSwitch"
               OpName %23 ""
               OpName %48 "d"
               OpName %57 "i"
               OpDecorate %8 ArrayStride 4
               OpMemberDecorate %9 0 Offset 0
               OpDecorate %9 BufferBlock
               OpDecorate %11 DescriptorSet 0
               OpDecorate %11 Binding 0
               OpMemberDecorate %21 0 Offset 0
               OpDecorate %21 Block
               OpDecorate %23 DescriptorSet 0
               OpDecorate %23 Binding 1
               OpDecorate %76 BuiltIn WorkgroupSize
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 0
          %7 = OpConstant %6 5
          %8 = OpTypeArray %6 %7
          %9 = OpTypeStruct %8
         %10 = OpTypePointer Uniform %9
         %11 = OpVariable %10 Uniform
         %12 = OpTypeInt 32 1
         %13 = OpConstant %12 0
         %14 = OpConstant %6 42
         %15 = OpTypePointer Uniform %6
         %17 = OpTypePointer Function %6
         %19 = OpTypeFloat 32
         %20 = OpTypeVector %19 2
         %21 = OpTypeStruct %20
         %22 = OpTypePointer Uniform %21
         %23 = OpVariable %22 Uniform
         %24 = OpConstant %6 1
         %25 = OpTypePointer Uniform %19
         %34 = OpTypeBool
         %38 = OpConstant %12 1
         %41 = OpConstantFalse %34
         %47 = OpConstantTrue %34
         %50 = OpConstant %6 0
         %54 = OpConstant %6 2
         %56 = OpTypePointer Function %12
         %65 = OpConstant %6 3
         %72 = OpConstant %6 7
         %74 = OpTypeVector %6 3
         %75 = OpConstant %6 100
         %76 = OpConstantComposite %74 %75 %24 %24
         %80 = OpUndef %6
         %85 = OpUndef %12
          %4 = OpFunction %2 None %3
          %5 = OpLabel
         %18 = OpVariable %17 Function
         %48 = OpVariable %17 Function
         %57 = OpVariable %56 Function
         %16 = OpAccessChain %15 %11 %13 %13
               OpStore %16 %14
         %26 = OpAccessChain %25 %23 %13 %24
         %27 = OpLoad %19 %26
         %28 = OpConvertFToU %6 %27
               OpStore %18 %28
               OpBranch %29
         %29 = OpLabel
               OpLoopMerge %31 %32 None
               OpBranch %30
         %30 = OpLabel
         %35 = OpINotEqual %34 %24 %28
               OpSelectionMerge %37 None
               OpBranchConditional %35 %36 %37
         %36 = OpLabel
         %39 = OpAccessChain %15 %11 %13 %38
               OpStore %39 %24
               OpReturn
         %37 = OpLabel
               OpBranch %32
         %32 = OpLabel
               OpBranchConditional %41 %29 %31
         %31 = OpLabel
               OpBranch %42
         %42 = OpLabel
               OpLoopMerge %44 %45 None
               OpBranch %46
         %46 = OpLabel
               OpBranch %43
         %43 = OpLabel
         %51 = OpINotEqual %34 %80 %50
               OpSelectionMerge %53 None
               OpBranchConditional %51 %52 %53
         %52 = OpLabel
         %55 = OpAccessChain %15 %11 %13 %38
               OpStore %55 %54
               OpStore %57 %13
               OpBranch %58
         %58 = OpLabel
               OpLoopMerge %60 %61 None
               OpBranch %62
         %62 = OpLabel
         %64 = OpSLessThan %34 %13 %38
               OpBranchConditional %64 %59 %60
         %59 = OpLabel
               OpStore %55 %65
               OpReturn
         %61 = OpLabel
               OpBranch %58
         %60 = OpLabel
               OpBranch %53
         %53 = OpLabel
         %82 = OpPhi %6 %28 %43 %28 %60
               OpBranch %44
         %45 = OpLabel
               OpBranch %42
         %44 = OpLabel
         %73 = OpAccessChain %15 %11 %13 %82
               OpStore %73 %72
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# injectionSwitch
BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA
 0.0 1.0
END

BUFFER variant_ssbo DATA_TYPE uint32 DATA
 0 0 0 0 0
END

PIPELINE compute variant_pipeline
  ATTACH variant_compute_shader
  BIND BUFFER variant_ssbo AS storage DESCRIPTOR_SET 0 BINDING 0
  BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 1
END

RUN variant_pipeline 1 1 1

EXPECT variant_ssbo IDX 0 EQ 42