llvm-project/clang/test/CodeGenCUDA/printf-builtin.cu
Mészáros Gergely 5942868a21
[clang][AMDGPU][CUDA] Handle __builtin_printf for device printf (#68515)
Previously `__builtin_printf` would result to emitting call to `printf`,
even though directly calling `printf` was translated.

Ref: #68478
2024-02-05 23:23:13 +05:30

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// REQUIRES: x86-registered-target
// REQUIRES: nvptx-registered-target
// RUN: %clang_cc1 -triple nvptx64-nvidia-cuda -emit-llvm -disable-llvm-optzns -fno-builtin-printf -fcuda-is-device \
// RUN: -o - %s | FileCheck %s
#define __device__ __attribute__((device))
extern "C" __device__ int printf(const char *format, ...);
// CHECK-LABEL: @_Z4foo1v()
__device__ int foo1() {
// CHECK: call i32 @vprintf
// CHECK-NOT: call i32 (ptr, ...) @printf
return __builtin_printf("Hello World\n");
}
// CHECK-LABEL: @_Z4foo2v()
__device__ int foo2() {
// CHECK: call i32 (ptr, ...) @printf
return printf("Hello World\n");
}