clang/HIP: Add another math header test

[arsenm]

Summary

This needs more exhaustive checks for the other things here;
for now just test the ones directly calling ocml functions.

[arsenm]

ping

[yaxunl]

LGTM. Thanks.

[arsenm]

aa4acea8cd8d30b6c8b5d539217be0d5c76db625

clang/test/Headers/__clang_hip_cmath.hip

+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
+// REQUIRES: amdgpu-registered-target
+
+// RUN: %clang_cc1 -include __clang_hip_runtime_wrapper.h      \
+// RUN:   -internal-isystem %S/../../lib/Headers/cuda_wrappers \
+// RUN:   -internal-isystem %S/Inputs/include \
+// RUN:   -triple amdgcn-amd-amdhsa -aux-triple x86_64-unknown-unknown \
+// RUN:   -target-cpu gfx906 -emit-llvm %s -fcuda-is-device -O1 -o - \
+// RUN:   -D__HIPCC_RTC__ | FileCheck -check-prefixes=CHECK,DEFAULT %s
+
+// Check that we end up with fast math flags set on intrinsic calls
+// RUN: %clang_cc1 -include __clang_hip_runtime_wrapper.h \
+// RUN:   -internal-isystem %S/../../lib/Headers/cuda_wrappers \
+// RUN:   -internal-isystem %S/Inputs/include \
+// RUN:   -triple amdgcn-amd-amdhsa -aux-triple x86_64-unknown-unknown \
+// RUN:   -target-cpu gfx906 -emit-llvm %s -fcuda-is-device -O1 -ffinite-math-only -o - \
+// RUN:   -D__HIPCC_RTC__ | FileCheck -check-prefixes=CHECK,FINITEONLY %s
+
+// DEFAULT-LABEL: @test_fma_f16(
+// DEFAULT-NEXT:  entry:
+// DEFAULT-NEXT:    [[CALL_I:%.*]] = tail call contract half @__ocml_fma_f16(half noundef [[X:%.*]], half noundef [[Y:%.*]], half noundef [[Z:%.*]]) #[[ATTR6:[0-9]+]]
+// DEFAULT-NEXT:    ret half [[CALL_I]]
+//
+// FINITEONLY-LABEL: @test_fma_f16(
+// FINITEONLY-NEXT:  entry:
+// FINITEONLY-NEXT:    [[CALL_I:%.*]] = tail call nnan ninf contract half @__ocml_fma_f16(half noundef [[X:%.*]], half noundef [[Y:%.*]], half noundef [[Z:%.*]]) #[[ATTR6:[0-9]+]]
+// FINITEONLY-NEXT:    ret half [[CALL_I]]
+//
+extern "C" __device__ _Float16 test_fma_f16(_Float16 x, _Float16 y,
+                                            _Float16 z) {
+  return fma(x, y, z);
+}
+
+// DEFAULT-LABEL: @test_pow_f16(
+// DEFAULT-NEXT:  entry:
+// DEFAULT-NEXT:    [[CALL_I:%.*]] = tail call contract half @__ocml_pown_f16(half noundef [[X:%.*]], i32 noundef [[Y:%.*]]) #[[ATTR7:[0-9]+]]
+// DEFAULT-NEXT:    ret half [[CALL_I]]
+//
+// FINITEONLY-LABEL: @test_pow_f16(
+// FINITEONLY-NEXT:  entry:
+// FINITEONLY-NEXT:    [[CALL_I:%.*]] = tail call nnan ninf contract half @__ocml_pown_f16(half noundef [[X:%.*]], i32 noundef [[Y:%.*]]) #[[ATTR7:[0-9]+]]
+// FINITEONLY-NEXT:    ret half [[CALL_I]]
+//
+extern "C" __device__ _Float16 test_pow_f16(_Float16 x, int y) {
+  return pow(x, y);
+}