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target/arm: Use tcg_gen_abs_i64 and tcg_gen_gvec_abs

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Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-04-17 14:28:57 -10:00
parent a456394ae5
commit 4e027a7106
4 changed files with 8 additions and 51 deletions
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2
target/arm/helper.h
View file

@ -352,8 +352,6 @@ DEF_HELPER_2(neon_ceq_u8, i32, i32, i32)
DEF_HELPER_2(neon_ceq_u16, i32, i32, i32) DEF_HELPER_2(neon_ceq_u16, i32, i32, i32)
DEF_HELPER_2(neon_ceq_u32, i32, i32, i32) DEF_HELPER_2(neon_ceq_u32, i32, i32, i32)
DEF_HELPER_1(neon_abs_s8, i32, i32)
DEF_HELPER_1(neon_abs_s16, i32, i32)
DEF_HELPER_1(neon_clz_u8, i32, i32) DEF_HELPER_1(neon_clz_u8, i32, i32)
DEF_HELPER_1(neon_clz_u16, i32, i32) DEF_HELPER_1(neon_clz_u16, i32, i32)
DEF_HELPER_1(neon_cls_s8, i32, i32) DEF_HELPER_1(neon_cls_s8, i32, i32)

5
target/arm/neon_helper.c
View file

@ -1228,11 +1228,6 @@ NEON_VOP(ceq_u16, neon_u16, 2)
NEON_VOP(ceq_u32, neon_u32, 1) NEON_VOP(ceq_u32, neon_u32, 1)
#undef NEON_FN #undef NEON_FN
#define NEON_FN(dest, src, dummy) dest = (src < 0) ? -src : src
NEON_VOP1(abs_s8, neon_s8, 4)
NEON_VOP1(abs_s16, neon_s16, 2)
#undef NEON_FN
/* Count Leading Sign/Zero Bits. */ /* Count Leading Sign/Zero Bits. */
static inline int do_clz8(uint8_t x) static inline int do_clz8(uint8_t x)
{ {

41
target/arm/translate-a64.c
View file

@ -9468,11 +9468,7 @@ static void handle_2misc_64(DisasContext *s, int opcode, bool u,
if (u) { if (u) {
tcg_gen_neg_i64(tcg_rd, tcg_rn); tcg_gen_neg_i64(tcg_rd, tcg_rn);
} else { } else {
TCGv_i64 tcg_zero = tcg_const_i64(0); tcg_gen_abs_i64(tcg_rd, tcg_rn);
tcg_gen_neg_i64(tcg_rd, tcg_rn);
tcg_gen_movcond_i64(TCG_COND_GT, tcg_rd, tcg_rn, tcg_zero,
tcg_rn, tcg_rd);
tcg_temp_free_i64(tcg_zero);
} }
break; break;
case 0x2f: /* FABS */ case 0x2f: /* FABS */
@ -12366,11 +12362,12 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
} }
break; break;
case 0xb: case 0xb:
if (u) { /* NEG */ if (u) { /* ABS, NEG */
gen_gvec_fn2(s, is_q, rd, rn, tcg_gen_gvec_neg, size); gen_gvec_fn2(s, is_q, rd, rn, tcg_gen_gvec_neg, size);
return; } else {
gen_gvec_fn2(s, is_q, rd, rn, tcg_gen_gvec_abs, size);
} }
break; return;
} }
if (size == 3) { if (size == 3) {
@ -12438,17 +12435,6 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
gen_helper_neon_qabs_s32(tcg_res, cpu_env, tcg_op); gen_helper_neon_qabs_s32(tcg_res, cpu_env, tcg_op);
} }
break; break;
case 0xb: /* ABS, NEG */
if (u) {
tcg_gen_neg_i32(tcg_res, tcg_op);
} else {
TCGv_i32 tcg_zero = tcg_const_i32(0);
tcg_gen_neg_i32(tcg_res, tcg_op);
tcg_gen_movcond_i32(TCG_COND_GT, tcg_res, tcg_op,
tcg_zero, tcg_op, tcg_res);
tcg_temp_free_i32(tcg_zero);
}
break;
case 0x2f: /* FABS */ case 0x2f: /* FABS */
gen_helper_vfp_abss(tcg_res, tcg_op); gen_helper_vfp_abss(tcg_res, tcg_op);
break; break;
@ -12561,23 +12547,6 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
tcg_temp_free_i32(tcg_zero); tcg_temp_free_i32(tcg_zero);
break; break;
} }
case 0xb: /* ABS, NEG */
if (u) {
TCGv_i32 tcg_zero = tcg_const_i32(0);
if (size) {
gen_helper_neon_sub_u16(tcg_res, tcg_zero, tcg_op);
} else {
gen_helper_neon_sub_u8(tcg_res, tcg_zero, tcg_op);
}
tcg_temp_free_i32(tcg_zero);
} else {
if (size) {
gen_helper_neon_abs_s16(tcg_res, tcg_op);
} else {
gen_helper_neon_abs_s8(tcg_res, tcg_op);
}
}
break;
case 0x4: /* CLS, CLZ */ case 0x4: /* CLS, CLZ */
if (u) { if (u) {
if (size == 0) { if (size == 0) {

11
target/arm/translate.c
View file

@ -8120,6 +8120,9 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
case NEON_2RM_VNEG: case NEON_2RM_VNEG:
tcg_gen_gvec_neg(size, rd_ofs, rm_ofs, vec_size, vec_size); tcg_gen_gvec_neg(size, rd_ofs, rm_ofs, vec_size, vec_size);
break; break;
case NEON_2RM_VABS:
tcg_gen_gvec_abs(size, rd_ofs, rm_ofs, vec_size, vec_size);
break;
default: default:
elementwise: elementwise:
@ -8225,14 +8228,6 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
} }
tcg_temp_free_i32(tmp2); tcg_temp_free_i32(tmp2);
break; break;
case NEON_2RM_VABS:
switch(size) {
case 0: gen_helper_neon_abs_s8(tmp, tmp); break;
case 1: gen_helper_neon_abs_s16(tmp, tmp); break;
case 2: tcg_gen_abs_i32(tmp, tmp); break;
default: abort();
}
break;
case NEON_2RM_VCGT0_F: case NEON_2RM_VCGT0_F:
{ {
TCGv_ptr fpstatus = get_fpstatus_ptr(1); TCGv_ptr fpstatus = get_fpstatus_ptr(1);