[flang-commits] [flang] [flang][AMDGPU] Convert math ops to AMD GPU library calls instead of libm calls (PR #99517)

[Krzysztof Drewniak via flang-commits]

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+!REQUIRES: amdgpu-registered-target
+!RUN: %flang_fc1 -triple amdgcn-amd-amdhsa -emit-llvm -fopenmp -fopenmp-is-target-device %s -o - | FileCheck %s
+
+subroutine omp_pow_f32(x, y)
+!$omp declare target
+  real :: x, y
+!CHECK: call float @__ocml_pow_f32(float {{.*}}, float {{.*}})
+  y = x ** x
+end subroutine omp_pow_f32
+
+subroutine omp_pow_f64(x, y)
+!$omp declare target
+  real(8) :: x, y
+!CHECK: call double @__ocml_pow_f64(double {{.*}}, double {{.*}})
+  y = x ** x
+end subroutine omp_pow_f64
+
+subroutine omp_sin_f32(x, y)
+!$omp declare target
+  real :: x, y
+!CHECK: call float @__ocml_sin_f32(float {{.*}})
+  y = sin(x)
+end subroutine omp_sin_f32
+
+subroutine omp_sin_f64(x, y)
+!$omp declare target
+  real(8) :: x, y
+!CHECK: call double @__ocml_sin_f64(double {{.*}})
+  y = sin(x)
+end subroutine omp_sin_f64
+
+subroutine omp_abs_f32(x, y)
+!$omp declare target
+  real :: x, y
+!CHECK: call float @__ocml_fabs_f32(float {{.*}})
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krzysz00 wrote:

... then why is there an OCML function for it? Backwards compatibility?

https://github.com/llvm/llvm-project/pull/99517