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//TEST():SIMPLE(filecheck=CHECK):-entry computeMain -stage compute -line-directive-mode none -target hlsl -loop-inversion
//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=OUT):-shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=OUT):-dx12 -use-dxil -shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=OUT):-cpu -shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=OUT):-vk -shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=OUT):-cpu -shaderobj -output-using-type
// Check that all the backends cope with the slightly unusual IR the loop inversion generated
// OUT: 180
// For all the below functions, verify that the body (adding to j and
// incrementing i) comes before any break. This verifies that the `break` has
// been moved to the end of the loop.
//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
RWStructuredBuffer<int> outputBuffer;
// A standard loop
// CHECK-LABEL: int a_{{.*}}()
// CHECK-NOT: break;
// CHECK: int {{.*}} = j_{{.*}} + [[i:i_[0-9]+]]
// CHECK: [[i]] + int(1);
// CHECK: if(
// CHECK: break;
// CHECK: return
int a()
{
int j = 0;
for(int i = 0; i < 10; ++i)
j += i;
return j;
}
// A vanilla while loop
// CHECK-LABEL: int b_{{.*}}()
// CHECK-NOT: break;
// CHECK: int {{.*}} = j_{{.*}} + [[i:i_[0-9]+]]
// CHECK: [[i]] + int(1);
// CHECK: if(
// CHECK: break;
// CHECK: return
int b()
{
int j = 0;
int i = 0;
while(i < 10)
{
j += i;
i++;
}
return j;
}
// A while loop with a break on the false branch
// CHECK-LABEL: int c_{{.*}}()
// CHECK-NOT: break;
// CHECK: int {{.*}} = j_{{.*}} + [[i:i_[0-9]+]]
// CHECK: [[i]] + int(1);
// CHECK: if(
// CHECK: break;
// CHECK: return
int c()
{
int j = 0;
int i = 0;
do
{
if(i < 10)
{}
else
break;
j += i;
i++;
} while(true);
return j;
}
// A while loop with a break on the true branch
// CHECK-LABEL: int d_{{.*}}()
// CHECK-NOT: break;
// CHECK: int {{.*}} = j_{{.*}} + [[i:i_[0-9]+]]
// CHECK: [[i]] + int(1);
// CHECK: if(
// CHECK: break;
// CHECK: return
int d()
{
int j = 0;
int i = 0;
do
{
if(i >= 10)
break;
else
{}
j += i;
i++;
} while(true);
return j;
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
outputBuffer[dispatchThreadID.x] = a() + b() + c() + d();
}
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