Author: sfertile Date: Mon Nov 14 12:47:15 2016 New Revision: 286863 URL: http://llvm.org/viewvc/llvm-project?rev=286863&view=rev Log: [PPC] altivec.h functions for converting half precision to single precision.
Adds 2 vector functions for converting from a vector of unsigned short to a vector of float. One converts the low 4 halfwords and one converts the high 4 halfwords. Differential Revision: https://reviews.llvm.org/D26534 Modified: cfe/trunk/include/clang/Basic/BuiltinsPPC.def cfe/trunk/lib/Headers/altivec.h cfe/trunk/test/CodeGen/builtins-ppc-p9vector.c Modified: cfe/trunk/include/clang/Basic/BuiltinsPPC.def URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/BuiltinsPPC.def?rev=286863&r1=286862&r2=286863&view=diff ============================================================================== --- cfe/trunk/include/clang/Basic/BuiltinsPPC.def (original) +++ cfe/trunk/include/clang/Basic/BuiltinsPPC.def Mon Nov 14 12:47:15 2016 @@ -402,6 +402,7 @@ BUILTIN(__builtin_vsx_xvcvuxdsp, "V4fV2U BUILTIN(__builtin_vsx_xvcvdpsp, "V4fV2d", "") BUILTIN(__builtin_vsx_xvcvsphp, "V4fV4f", "") +BUILTIN(__builtin_vsx_xvcvhpsp, "V4fV8Us", "") // Vector Test Data Class builtins BUILTIN(__builtin_vsx_xvtstdcdp, "V2ULLiV2dIi", "") Modified: cfe/trunk/lib/Headers/altivec.h URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Headers/altivec.h?rev=286863&r1=286862&r2=286863&view=diff ============================================================================== --- cfe/trunk/lib/Headers/altivec.h (original) +++ cfe/trunk/lib/Headers/altivec.h Mon Nov 14 12:47:15 2016 @@ -12322,6 +12322,27 @@ vec_extract_sig (vector double __a) { return __builtin_vsx_xvxsigdp(__a); } +static __inline__ vector float __ATTRS_o_ai +vec_extract_fp32_from_shorth(vector unsigned short __a) { + vector unsigned short __b = +#ifdef __LITTLE_ENDIAN__ + __builtin_shufflevector(__a, __a, 0, -1, 1, -1, 2, -1, 3, -1); +#else + __builtin_shufflevector(__a, __a, -1, 0, -1, 1, -1, 2, -1, 3); +#endif + return __builtin_vsx_xvcvhpsp(__b); +} + +static __inline__ vector float __ATTRS_o_ai +vec_extract_fp32_from_shortl(vector unsigned short __a) { + vector unsigned short __b = +#ifdef __LITTLE_ENDIAN__ + __builtin_shufflevector(__a, __a, 4, -1, 5, -1, 6, -1, 7, -1); +#else + __builtin_shufflevector(__a, __a, -1, 4, -1, 5, -1, 6, -1, 7); +#endif + return __builtin_vsx_xvcvhpsp(__b); +} #endif /* __POWER9_VECTOR__ */ /* vec_insert */ Modified: cfe/trunk/test/CodeGen/builtins-ppc-p9vector.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/builtins-ppc-p9vector.c?rev=286863&r1=286862&r2=286863&view=diff ============================================================================== --- cfe/trunk/test/CodeGen/builtins-ppc-p9vector.c (original) +++ cfe/trunk/test/CodeGen/builtins-ppc-p9vector.c Mon Nov 14 12:47:15 2016 @@ -967,3 +967,21 @@ vector bool long long test87(void) { // CHECK-NEXT: ret <2 x i64> return vec_test_data_class(vda, __VEC_CLASS_FP_NOT_NORMAL); } +vector float test88(void) { +// CHECK-BE: shufflevector <8 x i16> {{.+}}, <8 x i16> {{.+}}, <8 x i32> <i32 undef, i32 0, i32 undef, i32 1, i32 undef, i32 2, i32 undef, i32 3> +// CHECK-BE: @llvm.ppc.vsx.xvcvhpsp(<8 x i16> {{.+}}) +// CHECK-BE-NEXT: ret <4 x float> +// CHECK-LE: shufflevector <8 x i16> {{.+}}, <8 x i16> {{.+}}, <8 x i32> <i32 0, i32 undef, i32 1, i32 undef, i32 2, i32 undef, i32 3, i32 undef> +// CHECK-LE: @llvm.ppc.vsx.xvcvhpsp(<8 x i16> {{.+}}) +// CHECK-LE-NEXT: ret <4 x float> + return vec_extract_fp32_from_shorth(vusa); +} +vector float test89(void) { +// CHECK-BE: shufflevector <8 x i16> {{.+}}, <8 x i16> {{.+}}, <8 x i32> <i32 undef, i32 4, i32 undef, i32 5, i32 undef, i32 6, i32 undef, i32 7> +// CHECK-BE: @llvm.ppc.vsx.xvcvhpsp(<8 x i16> {{.+}}) +// CHECK-BE-NEXT: ret <4 x float> +// CHECK-LE: shufflevector <8 x i16> {{.+}}, <8 x i16> {{.+}}, <8 x i32> <i32 4, i32 undef, i32 5, i32 undef, i32 6, i32 undef, i32 7, i32 undef> +// CHECK-LE: @llvm.ppc.vsx.xvcvhpsp(<8 x i16> {{.+}}) +// CHECK-LE-NEXT: ret <4 x float> + return vec_extract_fp32_from_shortl(vusa); +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
