From: Pan Li Date: Thu, 3 Aug 2023 14:32:58 +0000 (+0800) Subject: RISC-V: Support RVV VFMACC rounding mode intrinsic API X-Git-Tag: basepoints/gcc-15~7167 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=51e5a5cefb11d8a7b2216e866abcc225ba16d127;p=thirdparty%2Fgcc.git RISC-V: Support RVV VFMACC rounding mode intrinsic API This patch would like to support the rounding mode API for the VFMACC for the below samples. * __riscv_vfmacc_vv_f32m1_rm * __riscv_vfmacc_vv_f32m1_rm_m * __riscv_vfmacc_vf_f32m1_rm * __riscv_vfmacc_vf_f32m1_rm_m Signed-off-by: Pan Li gcc/ChangeLog: * config/riscv/riscv-vector-builtins-bases.cc (class vfmacc_frm): New class for vfmacc frm. (vfmacc_frm_obj): New declaration. (BASE): Ditto. * config/riscv/riscv-vector-builtins-bases.h: Ditto. * config/riscv/riscv-vector-builtins-functions.def (vfmacc_frm): New function definition. * config/riscv/riscv-vector-builtins.cc (function_expander::use_ternop_insn): Add frm operand support. * config/riscv/vector.md: Add vfmuladd to frm_mode. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/base/float-point-single-multiply-add.c: New test. --- diff --git a/gcc/config/riscv/riscv-vector-builtins-bases.cc b/gcc/config/riscv/riscv-vector-builtins-bases.cc index afe3735f5ee8..1695d77e8bdb 100644 --- a/gcc/config/riscv/riscv-vector-builtins-bases.cc +++ b/gcc/config/riscv/riscv-vector-builtins-bases.cc @@ -356,6 +356,29 @@ public: } }; +/* Implements below instructions for frm + - vfmacc +*/ +class vfmacc_frm : public function_base +{ +public: + bool has_rounding_mode_operand_p () const override { return true; } + + bool has_merge_operand_p () const override { return false; } + + rtx expand (function_expander &e) const override + { + if (e.op_info->op == OP_TYPE_vf) + return e.use_ternop_insn (true, + code_for_pred_mul_scalar (PLUS, + e.vector_mode ())); + if (e.op_info->op == OP_TYPE_vv) + return e.use_ternop_insn (true, + code_for_pred_mul (PLUS, e.vector_mode ())); + gcc_unreachable (); + } +}; + /* Implements vrsub. */ class vrsub : public function_base { @@ -2116,6 +2139,7 @@ static CONSTEXPR const reverse_binop_frm
vfrdiv_frm_obj; static CONSTEXPR const widen_binop vfwmul_obj; static CONSTEXPR const widen_binop_frm vfwmul_frm_obj; static CONSTEXPR const vfmacc vfmacc_obj; +static CONSTEXPR const vfmacc_frm vfmacc_frm_obj; static CONSTEXPR const vfnmsac vfnmsac_obj; static CONSTEXPR const vfmadd vfmadd_obj; static CONSTEXPR const vfnmsub vfnmsub_obj; @@ -2351,6 +2375,7 @@ BASE (vfrdiv_frm) BASE (vfwmul) BASE (vfwmul_frm) BASE (vfmacc) +BASE (vfmacc_frm) BASE (vfnmsac) BASE (vfmadd) BASE (vfnmsub) diff --git a/gcc/config/riscv/riscv-vector-builtins-bases.h b/gcc/config/riscv/riscv-vector-builtins-bases.h index 2d2b52a312c7..67d18412b4cf 100644 --- a/gcc/config/riscv/riscv-vector-builtins-bases.h +++ b/gcc/config/riscv/riscv-vector-builtins-bases.h @@ -160,6 +160,7 @@ extern const function_base *const vfrdiv_frm; extern const function_base *const vfwmul; extern const function_base *const vfwmul_frm; extern const function_base *const vfmacc; +extern const function_base *const vfmacc_frm; extern const function_base *const vfnmsac; extern const function_base *const vfmadd; extern const function_base *const vfnmsub; diff --git a/gcc/config/riscv/riscv-vector-builtins-functions.def b/gcc/config/riscv/riscv-vector-builtins-functions.def index d43b33ded17a..3906f2e62483 100644 --- a/gcc/config/riscv/riscv-vector-builtins-functions.def +++ b/gcc/config/riscv/riscv-vector-builtins-functions.def @@ -348,6 +348,8 @@ DEF_RVV_FUNCTION (vfnmadd, alu, full_preds, f_vvvv_ops) DEF_RVV_FUNCTION (vfnmadd, alu, full_preds, f_vvfv_ops) DEF_RVV_FUNCTION (vfmsub, alu, full_preds, f_vvvv_ops) DEF_RVV_FUNCTION (vfmsub, alu, full_preds, f_vvfv_ops) +DEF_RVV_FUNCTION (vfmacc_frm, alu_frm, full_preds, f_vvvv_ops) +DEF_RVV_FUNCTION (vfmacc_frm, alu_frm, full_preds, f_vvfv_ops) // 13.7. Vector Widening Floating-Point Fused Multiply-Add Instructions DEF_RVV_FUNCTION (vfwmacc, alu, full_preds, f_wwvv_ops) diff --git a/gcc/config/riscv/riscv-vector-builtins.cc b/gcc/config/riscv/riscv-vector-builtins.cc index 528dca7ae855..abab06c00eda 100644 --- a/gcc/config/riscv/riscv-vector-builtins.cc +++ b/gcc/config/riscv/riscv-vector-builtins.cc @@ -3730,17 +3730,29 @@ function_expander::use_ternop_insn (bool vd_accum_p, insn_code icode) } for (int argno = arg_offset; argno < call_expr_nargs (exp); argno++) - add_input_operand (argno); + { + if (base->has_rounding_mode_operand_p () + && argno == call_expr_nargs (exp) - 2) + { + /* Since the rounding mode argument position is not consistent with + the instruction pattern, we need to skip rounding mode argument + here. */ + continue; + } + add_input_operand (argno); + } add_input_operand (Pmode, get_tail_policy_for_pred (pred)); add_input_operand (Pmode, get_mask_policy_for_pred (pred)); add_input_operand (Pmode, get_avl_type_rtx (avl_type::NONVLMAX)); - /* TODO: Currently, we don't support intrinsic that is modeling rounding mode. - We add default rounding mode for the intrinsics that didn't model rounding - mode yet. */ + if (base->has_rounding_mode_operand_p ()) + add_input_operand (call_expr_nargs (exp) - 2); + + /* The RVV floating-point only support dynamic rounding mode in the + FRM register. */ if (opno != insn_data[icode].n_generator_args) - add_input_operand (Pmode, const0_rtx); + add_input_operand (Pmode, gen_int_mode (riscv_vector::FRM_DYN, Pmode)); return generate_insn (icode); } diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md index 750b2de8df99..01dc7b0fd5f2 100644 --- a/gcc/config/riscv/vector.md +++ b/gcc/config/riscv/vector.md @@ -866,7 +866,7 @@ ;; Defines rounding mode of an floating-point operation. (define_attr "frm_mode" "rne,rtz,rdn,rup,rmm,dyn,dyn_exit,dyn_call,none" - (cond [(eq_attr "type" "vfalu,vfwalu,vfmul,vfdiv,vfwmul") + (cond [(eq_attr "type" "vfalu,vfwalu,vfmul,vfdiv,vfwmul,vfmuladd") (cond [(match_test "INTVAL (operands[9]) == riscv_vector::FRM_RNE") (const_string "rne") diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/float-point-single-multiply-add.c b/gcc/testsuite/gcc.target/riscv/rvv/base/float-point-single-multiply-add.c new file mode 100644 index 000000000000..df29f4d240f8 --- /dev/null +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/float-point-single-multiply-add.c @@ -0,0 +1,47 @@ +/* { dg-do compile } */ +/* { dg-options "-march=rv64gcv -mabi=lp64 -O3 -Wno-psabi" } */ + +#include "riscv_vector.h" + +typedef float float32_t; + +vfloat32m1_t +test_riscv_vfmacc_vv_f32m1_rm (vfloat32m1_t vd, vfloat32m1_t op1, + vfloat32m1_t op2, size_t vl) { + return __riscv_vfmacc_vv_f32m1_rm (vd, op1, op2, 0, vl); +} + +vfloat32m1_t +test_vfmacc_vv_f32m1_rm_m (vbool32_t mask, vfloat32m1_t vd, vfloat32m1_t op1, + vfloat32m1_t op2, size_t vl) { + return __riscv_vfmacc_vv_f32m1_rm_m (mask, vd, op1, op2, 1, vl); +} + +vfloat32m1_t +test_vfmacc_vf_f32m1_rm (vfloat32m1_t vd, float32_t op1, vfloat32m1_t op2, + size_t vl) { + return __riscv_vfmacc_vf_f32m1_rm (vd, op1, op2, 2, vl); +} + +vfloat32m1_t +test_vfmacc_vf_f32m1_rm_m (vfloat32m1_t vd, vbool32_t mask, float32_t op1, + vfloat32m1_t op2, size_t vl) { + return __riscv_vfmacc_vf_f32m1_rm_m (mask, vd, op1, op2, 3, vl); +} + +vfloat32m1_t +test_riscv_vfmacc_vv_f32m1 (vfloat32m1_t vd, vfloat32m1_t op1, vfloat32m1_t op2, + size_t vl) { + return __riscv_vfmacc_vv_f32m1 (vd, op1, op2, vl); +} + +vfloat32m1_t +test_vfmacc_vv_f32m1_m (vbool32_t mask, vfloat32m1_t vd, vfloat32m1_t op1, + vfloat32m1_t op2, size_t vl) { + return __riscv_vfmacc_vv_f32m1_m (mask, vd, op1, op2, vl); +} + +/* { dg-final { scan-assembler-times {vfmacc\.v[vf]\s+v[0-9]+,\s*[fav]+[0-9]+,\s*v[0-9]+} 6 } } */ +/* { dg-final { scan-assembler-times {frrm\s+[axs][0-9]+} 4 } } */ +/* { dg-final { scan-assembler-times {fsrm\s+[axs][0-9]+} 4 } } */ +/* { dg-final { scan-assembler-times {fsrmi\s+[01234]} 4 } } */