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target/arm: Convert FRINT* (vector) to decodetree

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241211163036.2297116-57-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2024-12-11 10:30:23 -06:00 • committed by Peter Maydell
parent 73a6f0c245
commit 09facda342
2 changed files with 88 additions and 114 deletions
Download patch file Download diff file Expand all files Collapse all files

26
target/arm/tcg/a64.decode
View file

@ -1697,3 +1697,29 @@ FNEG_v 0.10 1110 1.1 00000 11111 0 ..... ..... @qrr_sd
FSQRT_v 0.10 1110 111 11001 11111 0 ..... ..... @qrr_h
FSQRT_v 0.10 1110 1.1 00001 11111 0 ..... ..... @qrr_sd
FRINTN_v 0.00 1110 011 11001 10001 0 ..... ..... @qrr_h
FRINTN_v 0.00 1110 0.1 00001 10001 0 ..... ..... @qrr_sd
FRINTM_v 0.00 1110 011 11001 10011 0 ..... ..... @qrr_h
FRINTM_v 0.00 1110 0.1 00001 10011 0 ..... ..... @qrr_sd
FRINTP_v 0.00 1110 111 11001 10001 0 ..... ..... @qrr_h
FRINTP_v 0.00 1110 1.1 00001 10001 0 ..... ..... @qrr_sd
FRINTZ_v 0.00 1110 111 11001 10011 0 ..... ..... @qrr_h
FRINTZ_v 0.00 1110 1.1 00001 10011 0 ..... ..... @qrr_sd
FRINTA_v 0.10 1110 011 11001 10001 0 ..... ..... @qrr_h
FRINTA_v 0.10 1110 0.1 00001 10001 0 ..... ..... @qrr_sd
FRINTX_v 0.10 1110 011 11001 10011 0 ..... ..... @qrr_h
FRINTX_v 0.10 1110 0.1 00001 10011 0 ..... ..... @qrr_sd
FRINTI_v 0.10 1110 111 11001 10011 0 ..... ..... @qrr_h
FRINTI_v 0.10 1110 1.1 00001 10011 0 ..... ..... @qrr_sd
FRINT32Z_v 0.00 1110 0.1 00001 11101 0 ..... ..... @qrr_sd
FRINT32X_v 0.10 1110 0.1 00001 11101 0 ..... ..... @qrr_sd
FRINT64Z_v 0.00 1110 0.1 00001 11111 0 ..... ..... @qrr_sd
FRINT64X_v 0.10 1110 0.1 00001 11111 0 ..... ..... @qrr_sd

176
target/arm/tcg/translate-a64.c
View file

@ -9209,6 +9209,21 @@ static bool do_fp1_vector(DisasContext *s, arg_qrr_e *a,
TRANS(FSQRT_v, do_fp1_vector, a, &f_scalar_fsqrt, -1)
TRANS(FRINTN_v, do_fp1_vector, a, &f_scalar_frint, FPROUNDING_TIEEVEN)
TRANS(FRINTP_v, do_fp1_vector, a, &f_scalar_frint, FPROUNDING_POSINF)
TRANS(FRINTM_v, do_fp1_vector, a, &f_scalar_frint, FPROUNDING_NEGINF)
TRANS(FRINTZ_v, do_fp1_vector, a, &f_scalar_frint, FPROUNDING_ZERO)
TRANS(FRINTA_v, do_fp1_vector, a, &f_scalar_frint, FPROUNDING_TIEAWAY)
TRANS(FRINTI_v, do_fp1_vector, a, &f_scalar_frint, -1)
TRANS(FRINTX_v, do_fp1_vector, a, &f_scalar_frintx, -1)
TRANS_FEAT(FRINT32Z_v, aa64_frint, do_fp1_vector, a,
&f_scalar_frint32, FPROUNDING_ZERO)
TRANS_FEAT(FRINT32X_v, aa64_frint, do_fp1_vector, a, &f_scalar_frint32, -1)
TRANS_FEAT(FRINT64Z_v, aa64_frint, do_fp1_vector, a,
&f_scalar_frint64, FPROUNDING_ZERO)
TRANS_FEAT(FRINT64X_v, aa64_frint, do_fp1_vector, a, &f_scalar_frint64, -1)
/* Common vector code for handling integer to FP conversion */
static void handle_simd_intfp_conv(DisasContext *s, int rd, int rn,
int elements, int is_signed,
@ -9520,25 +9535,6 @@ static void handle_2misc_64(DisasContext *s, int opcode, bool u,
case 0x7b: /* FCVTZU */
gen_helper_vfp_touqd(tcg_rd, tcg_rn, tcg_constant_i32(0), tcg_fpstatus);
break;
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
case 0x58: /* FRINTA */
case 0x79: /* FRINTI */
gen_helper_rintd(tcg_rd, tcg_rn, tcg_fpstatus);
break;
case 0x59: /* FRINTX */
gen_helper_rintd_exact(tcg_rd, tcg_rn, tcg_fpstatus);
break;
case 0x1e: /* FRINT32Z */
case 0x5e: /* FRINT32X */
gen_helper_frint32_d(tcg_rd, tcg_rn, tcg_fpstatus);
break;
case 0x1f: /* FRINT64Z */
case 0x5f: /* FRINT64X */
gen_helper_frint64_d(tcg_rd, tcg_rn, tcg_fpstatus);
break;
default:
case 0x4: /* CLS, CLZ */
case 0x5: /* NOT */
@ -9550,6 +9546,17 @@ static void handle_2misc_64(DisasContext *s, int opcode, bool u,
case 0x2f: /* FABS */
case 0x6f: /* FNEG */
case 0x7f: /* FSQRT */
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
case 0x58: /* FRINTA */
case 0x79: /* FRINTI */
case 0x59: /* FRINTX */
case 0x1e: /* FRINT32Z */
case 0x5e: /* FRINT32X */
case 0x1f: /* FRINT64Z */
case 0x5f: /* FRINT64X */
g_assert_not_reached();
}
}
@ -10094,46 +10101,12 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
}
handle_2misc_widening(s, opcode, is_q, size, rn, rd);
return;
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
rmode = extract32(opcode, 5, 1) | (extract32(opcode, 0, 1) << 1);
/* fall through */
case 0x59: /* FRINTX */
case 0x79: /* FRINTI */
need_fpstatus = true;
if (size == 3 && !is_q) {
unallocated_encoding(s);
return;
}
break;
case 0x58: /* FRINTA */
rmode = FPROUNDING_TIEAWAY;
need_fpstatus = true;
if (size == 3 && !is_q) {
unallocated_encoding(s);
return;
}
break;
case 0x7c: /* URSQRTE */
if (size == 3) {
unallocated_encoding(s);
return;
}
break;
case 0x1e: /* FRINT32Z */
case 0x1f: /* FRINT64Z */
rmode = FPROUNDING_ZERO;
/* fall through */
case 0x5e: /* FRINT32X */
case 0x5f: /* FRINT64X */
need_fpstatus = true;
if ((size == 3 && !is_q) || !dc_isar_feature(aa64_frint, s)) {
unallocated_encoding(s);
return;
}
break;
default:
case 0x16: /* FCVTN, FCVTN2 */
case 0x36: /* BFCVTN, BFCVTN2 */
@ -10141,6 +10114,17 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
case 0x2f: /* FABS */
case 0x6f: /* FNEG */
case 0x7f: /* FSQRT */
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
case 0x59: /* FRINTX */
case 0x79: /* FRINTI */
case 0x58: /* FRINTA */
case 0x1e: /* FRINT32Z */
case 0x1f: /* FRINT64Z */
case 0x5e: /* FRINT32X */
case 0x5f: /* FRINT64X */
unallocated_encoding(s);
return;
}
@ -10229,33 +10213,25 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
gen_helper_vfp_touls(tcg_res, tcg_op,
tcg_constant_i32(0), tcg_fpstatus);
break;
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
case 0x58: /* FRINTA */
case 0x79: /* FRINTI */
gen_helper_rints(tcg_res, tcg_op, tcg_fpstatus);
break;
case 0x59: /* FRINTX */
gen_helper_rints_exact(tcg_res, tcg_op, tcg_fpstatus);
break;
case 0x7c: /* URSQRTE */
gen_helper_rsqrte_u32(tcg_res, tcg_op);
break;
case 0x1e: /* FRINT32Z */
case 0x5e: /* FRINT32X */
gen_helper_frint32_s(tcg_res, tcg_op, tcg_fpstatus);
break;
case 0x1f: /* FRINT64Z */
case 0x5f: /* FRINT64X */
gen_helper_frint64_s(tcg_res, tcg_op, tcg_fpstatus);
break;
default:
case 0x7: /* SQABS, SQNEG */
case 0x2f: /* FABS */
case 0x6f: /* FNEG */
case 0x7f: /* FSQRT */
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
case 0x58: /* FRINTA */
case 0x79: /* FRINTI */
case 0x59: /* FRINTX */
case 0x1e: /* FRINT32Z */
case 0x5e: /* FRINT32X */
case 0x1f: /* FRINT64Z */
case 0x5f: /* FRINT64X */
g_assert_not_reached();
}
}
@ -10289,7 +10265,6 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
int rn, rd;
bool is_q;
bool is_scalar;
bool only_in_vector = false;
int pass;
TCGv_i32 tcg_rmode = NULL;
@ -10343,31 +10318,6 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
case 0x3d: /* FRECPE */
case 0x3f: /* FRECPX */
break;
case 0x18: /* FRINTN */
only_in_vector = true;
rmode = FPROUNDING_TIEEVEN;
break;
case 0x19: /* FRINTM */
only_in_vector = true;
rmode = FPROUNDING_NEGINF;
break;
case 0x38: /* FRINTP */
only_in_vector = true;
rmode = FPROUNDING_POSINF;
break;
case 0x39: /* FRINTZ */
only_in_vector = true;
rmode = FPROUNDING_ZERO;
break;
case 0x58: /* FRINTA */
only_in_vector = true;
rmode = FPROUNDING_TIEAWAY;
break;
case 0x59: /* FRINTX */
case 0x79: /* FRINTI */
only_in_vector = true;
/* current rounding mode */
break;
case 0x1a: /* FCVTNS */
rmode = FPROUNDING_TIEEVEN;
break;
@ -10404,6 +10354,13 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
case 0x2f: /* FABS */
case 0x6f: /* FNEG */
case 0x7f: /* FSQRT (vector) */
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
case 0x58: /* FRINTA */
case 0x59: /* FRINTX */
case 0x79: /* FRINTI */
unallocated_encoding(s);
return;
}
@ -10415,11 +10372,6 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
unallocated_encoding(s);
return;
}
/* FRINTxx is only in the vector form */
if (only_in_vector) {
unallocated_encoding(s);
return;
}
}
if (!fp_access_check(s)) {
@ -10494,17 +10446,6 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
case 0x7b: /* FCVTZU */
gen_helper_advsimd_f16touinth(tcg_res, tcg_op, tcg_fpstatus);
break;
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
case 0x58: /* FRINTA */
case 0x79: /* FRINTI */
gen_helper_advsimd_rinth(tcg_res, tcg_op, tcg_fpstatus);
break;
case 0x59: /* FRINTX */
gen_helper_advsimd_rinth_exact(tcg_res, tcg_op, tcg_fpstatus);
break;
case 0x7d: /* FRSQRTE */
gen_helper_rsqrte_f16(tcg_res, tcg_op, tcg_fpstatus);
break;
@ -10512,6 +10453,13 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
case 0x2f: /* FABS */
case 0x6f: /* FNEG */
case 0x7f: /* FSQRT */
case 0x18: /* FRINTN */
case 0x19: /* FRINTM */
case 0x38: /* FRINTP */
case 0x39: /* FRINTZ */
case 0x58: /* FRINTA */
case 0x79: /* FRINTI */
case 0x59: /* FRINTX */
g_assert_not_reached();
}