Finn Plummer e9700d03dd
[HLSL] Implement asint casting using bit_cast (#110027)
Using clang's `__builtin_bit_cast`, implement the hlsl intrinsic
`asint`.

Follows implementation details of `asuint/asfloat`.

Fixes #99091
2024-09-27 14:16:51 -07:00

26 lines
1.6 KiB
HLSL

// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.6-library %s -fnative-half-type -verify
int4 test_asint_too_many_arg(float p0, float p1) {
return asint(p0, p1);
// expected-error@-1 {{no matching function for call to 'asint'}}
// expected-note@hlsl/hlsl_intrinsics.h:* {{candidate function template not viable: requires single argument 'V', but 2 arguments were provided}}
// expected-note@hlsl/hlsl_intrinsics.h:* {{candidate function template not viable: requires single argument 'F', but 2 arguments were provided}}
}
int test_asint_double(double p1) {
return asint(p1);
// expected-error@hlsl/hlsl_intrinsics.h:* {{no matching function for call to 'bit_cast'}}
// expected-note@-2 {{in instantiation of function template specialization 'hlsl::asint<double>'}}
// expected-note@hlsl/hlsl_detail.h:* {{candidate template ignored: could not match 'vector<double, N>' against 'double'}}
// expected-note@hlsl/hlsl_detail.h:* {{candidate template ignored: substitution failure [with U = int, T = double]: no type named 'Type'}}
}
int test_asint_half(half p1) {
return asint(p1);
// expected-error@hlsl/hlsl_intrinsics.h:* {{no matching function for call to 'bit_cast'}}
// expected-note@-2 {{in instantiation of function template specialization 'hlsl::asint<half>'}}
// expected-note@hlsl/hlsl_detail.h:* {{candidate template ignored: could not match 'vector<half, N>' against 'half'}}
// expected-note@hlsl/hlsl_detail.h:* {{candidate template ignored: substitution failure [with U = int, T = half]: no type named 'Type'}}
}