Yaxun (Sam) Liu fb44b9db95 [OpenCL][CUDA][HIP][SYCL] Add norecurse
norecurse function attr indicates the function is not called recursively
directly or indirectly.

Add norecurse to OpenCL functions, SYCL functions in device compilation
and CUDA/HIP kernels.

Although there is LLVM pass adding norecurse to functions, it only works
for whole-program compilation. Also FE adding norecurse can make that
pass run faster since functions with norecurse do not need to be checked
again.

Differential Revision: https://reviews.llvm.org/D73651
2020-02-16 20:41:00 -05:00

7 lines
191 B
Common Lisp

// RUN: %clang_cc1 -O0 -emit-llvm -o - %s | FileCheck %s
kernel void kernel1(int a) {}
// CHECK: define{{.*}}@kernel1{{.*}}#[[ATTR:[0-9]*]]
// CHECK: attributes #[[ATTR]] = {{.*}}norecurse