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//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-slang -compute -shaderobj -output-using-type
//TEST(compute, vulkan):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-vk -compute -shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-cpu -compute -output-using-type -shaderobj
//TEST:SIMPLE(filecheck=CHK_REPORT):-target hlsl -stage compute -entry computeMain -report-checkpoint-intermediates
//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
typedef DifferentialPair<float> dpfloat;
typedef float.Differential dfloat;
// A variety of tests to check for loop exit value inference.
// For all of these loops, we expect our inference pass to be able to
// infer the loop exit value correctly.
//
// Further, if the optimization pass runs successfully, then there should
// be absolutely no context stored for any of these tests.
//
// CHK_REPORT: (0): note: no checkpoint contexts to report
[Differentiable]
float test_simple(float y)
{
float t = y;
for (int i = 0; i < 3; i++)
{
t = t * (i + 1);
}
return t;
}
[Differentiable]
float test_strided(float y)
{
float t = y;
for (int i = 0; i < 5; i+=2)
{
t = t * (i + 1);
}
return t;
}
[Differentiable]
float test_offset(float y)
{
float t = y;
for (int i = 2; i < 5; i+=2)
{
t = t * (i + 1);
}
return t;
}
[Differentiable]
float test_negative_stride(float y)
{
float t = y;
for (int i = 7; i >= 1; i-=2)
{
t = t * (i + 1);
}
return t;
}
[Differentiable]
float test_nested(float y)
{
float t = y;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
t = t * (i + 4 * j + 1);
}
}
return t;
}
[Differentiable]
float test_nested_with_offset(float y)
{
float t = y;
for (int i = -3; i < 3; i++)
{
for (int j = -3; j < 3; j++)
{
t = t * ((abs(i) % 2) + (abs(j) % 2) + 1);
}
}
return t;
}
[Differentiable]
float test_nested_with_conditions(float y)
{
float t = y;
for (int i = 0; i < 3; i++)
{
if (i % 2 == 0)
{
for (int j = 0; j < 3; j++)
{
if (j % 2 == 0)
{
t = t * (i + 4 * j + 1);
}
}
}
}
return t;
}
[Differentiable]
float test_with_continue(float y)
{
float t = y;
for (int i = 0; i < 5; i++)
{
if (i % 2 == 0)
{
continue;
}
t = t * (i + 1);
}
return t;
}
[Differentiable]
float test_nested_with_continue(float y)
{
float t = y;
for (int i = 0; i < 3; i++)
{
if (i % 2 == 0)
continue;
for (int j = 0; j < 3; j++)
{
if (j % 2 == 0)
continue;
if (j == 0)
continue;
t = t * (i + 4 * j + 1);
}
}
return t;
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
outputBuffer[0] = 0.0f; // CHECK: 0.000000
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_simple)(dpa, 1.0f);
outputBuffer[1] = dpa.d; // CHECK-NEXT: 6.000000
}
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_strided)(dpa, 1.0f);
outputBuffer[2] = dpa.d; // CHECK-NEXT: 15.000000
}
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_offset)(dpa, 1.0f);
outputBuffer[3] = dpa.d; // CHECK-NEXT: 15.000000
}
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_negative_stride)(dpa, 1.0f);
outputBuffer[4] = dpa.d; // CHECK-NEXT: 384.000000
}
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_nested)(dpa, 1.0f);
outputBuffer[5] = dpa.d; // CHECK-NEXT: 1247400.000000
}
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_nested_with_offset)(dpa, 1.0f);
outputBuffer[6] = dpa.d; // CHECK-NEXT: 5159780352.000000
}
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_nested_with_conditions)(dpa, 1.0f);
outputBuffer[7] = dpa.d; // CHECK-NEXT: 297.000000
}
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_with_continue)(dpa, 1.0f);
outputBuffer[8] = dpa.d; // CHECK-NEXT: 8.000000
}
{
dpfloat dpa = dpfloat(0.4, 0.0);
__bwd_diff(test_nested_with_continue)(dpa, 1.0f);
outputBuffer[9] = dpa.d; // CHECK-NEXT: 6.000000
}
}
//CHK-NOT: note
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