[require]
VK_KHR_spirv_1_4

[compute shader spirv]
; Use the IterationMultiple loop control.
; Generated from with modified loop control:
;
; #version 430
;
;
; layout(std430, binding = 0) buffer input_buffer
; {
;         int in_size;
;	ivec4 data_SSBO[];
; };
;
; layout(std430, binding = 1) buffer output_buffer
; {
;	int out_size;
;	ivec4 out_SSBO[];
; };
;
; void main() {
;     for( int i = 0; i < in_size; ++i ) {
;         out_SSBO[i] = data_SSBO[i];
;     }
; }
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main" %_ %__0
               OpExecutionMode %main LocalSize 1 1 1
               OpSource GLSL 430
               OpSourceExtension "GL_GOOGLE_cpp_style_line_directive"
               OpSourceExtension "GL_GOOGLE_include_directive"
               OpName %main "main"
               OpName %i "i"
               OpName %input_buffer "input_buffer"
               OpMemberName %input_buffer 0 "in_size"
               OpMemberName %input_buffer 1 "data_SSBO"
               OpName %_ ""
               OpName %output_buffer "output_buffer"
               OpMemberName %output_buffer 0 "out_size"
               OpMemberName %output_buffer 1 "out_SSBO"
               OpName %__0 ""
               OpDecorate %_runtimearr_v4int ArrayStride 16
               OpMemberDecorate %input_buffer 0 Offset 0
               OpMemberDecorate %input_buffer 1 Offset 16
               OpDecorate %input_buffer Block
               OpDecorate %_ DescriptorSet 0
               OpDecorate %_ Binding 0
               OpDecorate %_runtimearr_v4int_0 ArrayStride 16
               OpMemberDecorate %output_buffer 0 Offset 0
               OpMemberDecorate %output_buffer 1 Offset 16
               OpDecorate %output_buffer Block
               OpDecorate %__0 DescriptorSet 0
               OpDecorate %__0 Binding 1
       %void = OpTypeVoid
          %3 = OpTypeFunction %void
        %int = OpTypeInt 32 1
%_ptr_Function_int = OpTypePointer Function %int
      %int_0 = OpConstant %int 0
    %v4int = OpTypeVector %int 4
%_runtimearr_v4int = OpTypeRuntimeArray %v4int
%input_buffer = OpTypeStruct %int %_runtimearr_v4int
%_ptr_StorageBuffer_input_buffer = OpTypePointer StorageBuffer %input_buffer
          %_ = OpVariable %_ptr_StorageBuffer_input_buffer StorageBuffer
%_ptr_StorageBuffer_int = OpTypePointer StorageBuffer %int
       %bool = OpTypeBool
%_runtimearr_v4int_0 = OpTypeRuntimeArray %v4int
%output_buffer = OpTypeStruct %int %_runtimearr_v4int_0
%_ptr_StorageBuffer_output_buffer = OpTypePointer StorageBuffer %output_buffer
        %__0 = OpVariable %_ptr_StorageBuffer_output_buffer StorageBuffer
      %int_1 = OpConstant %int 1
%_ptr_StorageBuffer_v4int = OpTypePointer StorageBuffer %v4int
       %main = OpFunction %void None %3
          %5 = OpLabel
          %i = OpVariable %_ptr_Function_int Function
               OpStore %i %int_0
               OpBranch %10
         %10 = OpLabel
               OpLoopMerge %12 %13 IterationMultiple 3
               OpBranch %14
         %14 = OpLabel
         %15 = OpLoad %int %i
         %23 = OpAccessChain %_ptr_StorageBuffer_int %_ %int_0
         %24 = OpLoad %int %23
         %26 = OpSLessThan %bool %15 %24
               OpBranchConditional %26 %11 %12
         %11 = OpLabel
         %32 = OpLoad %int %i
         %33 = OpLoad %int %i
         %35 = OpAccessChain %_ptr_StorageBuffer_v4int %_ %int_1 %33
         %36 = OpLoad %v4int %35
         %37 = OpAccessChain %_ptr_StorageBuffer_v4int %__0 %int_1 %32
               OpStore %37 %36
               OpBranch %13
         %13 = OpLabel
         %38 = OpLoad %int %i
         %39 = OpIAdd %int %38 %int_1
               OpStore %i %39
               OpBranch %10
         %12 = OpLabel
               OpReturn
               OpFunctionEnd

[test]
ssbo 0:0 112
ssbo 0:0 subdata int 0 6 0 0 0
ssbo 0:0 subdata int 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
ssbo 0:1 112
ssbo 0:1 subdata int 0 6 0 0 0
ssbo 0:1 subdata int 16 0 0 0 0  0 0 0 0  0 0 0 0  0 0 0 0  0 0 0 0  0 0 0 0

compute entrypoint main
compute 1 1 1

probe ssbo int 0:1 16 == 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24