llvm-project/clang/test/CodeGenCXX/builtin-calling-conv.cpp
Tex Riddell 5c2a133b13
Emit constrained atan2 intrinsic for clang builtin (#113636)
This change is part of this proposal:
https://discourse.llvm.org/t/rfc-all-the-math-intrinsics/78294

- `Builtins.td` - Add f16 support for libm atan2 builtin
- `CGBuiltin.cpp` - Emit constraint atan2 intrinsic for clang builtin
- `clang/test/CodeGenCXX/builtin-calling-conv.cpp` - Use erff instead of
atan2 for clang builtin to lib call calling convention check, now that
atan2 maps to an intrinsic.
- add atan2 cases to llvm.experimental.constrained tests for more
backends: ARM, PowerPC, RISCV, SystemZ.
- LangRef.rst: add llvm.experimental.constrained.atan2, revise
llvm.atan2 description.

Last part of Implement the atan2 HLSL Function. Fixes #70096.
2024-11-12 13:34:29 -08:00

54 lines
1.9 KiB
C++

// RUN: %clang_cc1 -triple x86_64-linux-pc -DREDECL -emit-llvm %s -o - | FileCheck %s -check-prefix LINUX
// RUN: %clang_cc1 -triple spir-unknown-unknown -DREDECL -DSPIR -emit-llvm %s -o - | FileCheck %s -check-prefix SPIR
// RUN: %clang_cc1 -triple x86_64-linux-pc -emit-llvm %s -o - | FileCheck %s -check-prefix LINUX
// RUN: %clang_cc1 -triple spir-unknown-unknown -DSPIR -emit-llvm %s -o - | FileCheck %s -check-prefix SPIR
// RUN: %clang_cc1 -triple i386-windows-pc -fdefault-calling-conv=stdcall -emit-llvm %s -o - | FileCheck %s -check-prefix WIN32
#ifdef REDECL
namespace std {
#ifdef SPIR
using size_t = unsigned int;
#else
using size_t = unsigned long;
#endif // SPIR
} // namespace std
float __builtin_erff(float);
void *operator new(std::size_t);
#endif // REDECL
void foo();
void user() {
int i;
::operator new(5);
(void)__builtin_erff(1.1);
foo();
}
// LINUX: define{{.*}} void @_Z4userv()
// LINUX: call noalias noundef nonnull ptr @_Znwm
// LINUX: call float @erff
// LINUX: call void @_Z3foov
// LINUX: declare noundef nonnull ptr @_Znwm(i64 noundef)
// LINUX: declare float @erff(float noundef)
// LINUX: declare void @_Z3foov()
// SPIR: define{{.*}} spir_func void @_Z4userv()
// SPIR: call spir_func noalias noundef nonnull ptr @_Znwj
// SPIR: call spir_func float @erff
// SPIR: call spir_func void @_Z3foov
// SPIR: declare spir_func noundef nonnull ptr @_Znwj(i32 noundef)
// SPIR: declare spir_func float @erff(float noundef)
// SPIR: declare spir_func void @_Z3foov()
// Note: Windows /G options should not change the platform default calling
// convention of builtins.
// WIN32: define dso_local x86_stdcallcc void @"?user@@YGXXZ"()
// WIN32: call noalias noundef nonnull ptr @"??2@YAPAXI@Z"
// WIN32: call float @erff
// WIN32: call x86_stdcallcc void @"?foo@@YGXXZ"
// WIN32: declare dso_local noundef nonnull ptr @"??2@YAPAXI@Z"(
// WIN32: declare dso_local float @erff(float noundef)
// WIN32: declare dso_local x86_stdcallcc void @"?foo@@YGXXZ"()