bac2a07540
OpenCL and HIP have -cl-fp32-correctly-rounded-divide-sqrt and -fno-hip-correctly-rounded-divide-sqrt. The corresponding fpmath metadata was only set on fdiv, and not sqrt. The backend is currently underutilizing sqrt lowering options, and the responsibility is split between the libraries and backend and this metadata is needed. CUDA/NVCC has -prec-div and -prev-sqrt but clang doesn't appear to be aiming for compatibility with those. Don't know if OpenMP has a similar control.
50 lines
1.4 KiB
Plaintext
50 lines
1.4 KiB
Plaintext
// RUN: %clang_cc1 %s -emit-llvm -o - -triple -amdgcn-amd-amdhsa \
|
|
// RUN: -target-cpu gfx906 -fcuda-is-device -x hip \
|
|
// RUN: | FileCheck --check-prefixes=COMMON,CRDIV %s
|
|
// RUN: %clang_cc1 %s -emit-llvm -o - -triple -amdgcn-amd-amdhsa \
|
|
// RUN: -target-cpu gfx906 -fcuda-is-device -x hip \
|
|
// RUN: -fno-hip-fp32-correctly-rounded-divide-sqrt \
|
|
// RUN: | FileCheck --check-prefixes=COMMON,NCRDIV %s
|
|
|
|
#include "Inputs/cuda.h"
|
|
|
|
typedef __attribute__(( ext_vector_type(4) )) float float4;
|
|
|
|
// COMMON-LABEL: @_Z11spscalardiv
|
|
// COMMON: fdiv{{.*}},
|
|
// NCRDIV: !fpmath ![[MD:[0-9]+]]
|
|
// CRDIV-NOT: !fpmath
|
|
__device__ float spscalardiv(float a, float b) {
|
|
return a / b;
|
|
}
|
|
|
|
// COMMON-LABEL: @_Z11spvectordiv
|
|
// COMMON: fdiv{{.*}},
|
|
// NCRDIV: !fpmath ![[MD]]
|
|
// CRDIV-NOT: !fpmath
|
|
__device__ float4 spvectordiv(float4 a, float4 b) {
|
|
return a / b;
|
|
}
|
|
|
|
// COMMON-LABEL: @_Z11dpscalardiv
|
|
// COMMON-NOT: !fpmath
|
|
__device__ double dpscalardiv(double a, double b) {
|
|
return a / b;
|
|
}
|
|
|
|
// COMMON-LABEL: @_Z12spscalarsqrt
|
|
// NCRDIV: call contract float @llvm.sqrt.f32(float %{{.+}}), !fpmath ![[MD:[0-9]+]]
|
|
// CRDIV: call contract float @llvm.sqrt.f32(float %{{.+}}){{$}}
|
|
__device__ float spscalarsqrt(float a) {
|
|
return __builtin_sqrtf(a);
|
|
}
|
|
|
|
// COMMON-LABEL: @_Z12dpscalarsqrt
|
|
// COMMON: call contract double @llvm.sqrt.f64(double %{{.+}}){{$}}
|
|
// COMMON-NOT: !fpmath
|
|
__device__ double dpscalarsqrt(double a) {
|
|
return __builtin_sqrt(a);
|
|
}
|
|
|
|
// NCRSQRT: ![[MD]] = !{float 2.500000e+00}
|