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Signed-off-by: Richard Henderson --- target/riscv/translate.c | 13 ++--- target/riscv/insn_trans/trans_rvv.c.inc | 74 +++++++------------------ 2 files changed, 26 insertions(+), 61 deletions(-) -- 2.25.1 Reviewed-by: Alistair Francis diff --git a/target/riscv/translate.c b/target/riscv/translate.c index e44254e878..e356fc6c46 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -232,11 +232,6 @@ static TCGv get_gpr(DisasContext *ctx, int reg_num, DisasExtend ext) g_assert_not_reached(); } -static void gen_get_gpr(DisasContext *ctx, TCGv t, int reg_num) -{ - tcg_gen_mov_tl(t, get_gpr(ctx, reg_num, EXT_NONE)); -} - static TCGv dest_gpr(DisasContext *ctx, int reg_num) { if (reg_num == 0 || ctx->w) { @@ -637,9 +632,11 @@ void riscv_translate_init(void) { int i; - /* cpu_gpr[0] is a placeholder for the zero register. Do not use it. */ - /* Use the gen_set_gpr and gen_get_gpr helper functions when accessing */ - /* registers, unless you specifically block reads/writes to reg 0 */ + /* + * cpu_gpr[0] is a placeholder for the zero register. Do not use it. + * Use the gen_set_gpr and get_gpr helper functions when accessing regs, + * unless you specifically block reads/writes to reg 0. + */ cpu_gpr[0] = NULL; for (i = 1; i < 32; i++) { diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc index de580c493c..fa451938f1 100644 --- a/target/riscv/insn_trans/trans_rvv.c.inc +++ b/target/riscv/insn_trans/trans_rvv.c.inc @@ -27,27 +27,22 @@ static bool trans_vsetvl(DisasContext *ctx, arg_vsetvl *a) return false; } - s2 = tcg_temp_new(); - dst = tcg_temp_new(); + s2 = get_gpr(ctx, a->rs2, EXT_ZERO); + dst = dest_gpr(ctx, a->rd); /* Using x0 as the rs1 register specifier, encodes an infinite AVL */ if (a->rs1 == 0) { /* As the mask is at least one bit, RV_VLEN_MAX is >= VLMAX */ s1 = tcg_constant_tl(RV_VLEN_MAX); } else { - s1 = tcg_temp_new(); - gen_get_gpr(ctx, s1, a->rs1); + s1 = get_gpr(ctx, a->rs1, EXT_ZERO); } - gen_get_gpr(ctx, s2, a->rs2); gen_helper_vsetvl(dst, cpu_env, s1, s2); gen_set_gpr(ctx, a->rd, dst); + tcg_gen_movi_tl(cpu_pc, ctx->pc_succ_insn); lookup_and_goto_ptr(ctx); ctx->base.is_jmp = DISAS_NORETURN; - - tcg_temp_free(s1); - tcg_temp_free(s2); - tcg_temp_free(dst); return true; } @@ -60,23 +55,20 @@ static bool trans_vsetvli(DisasContext *ctx, arg_vsetvli *a) } s2 = tcg_constant_tl(a->zimm); - dst = tcg_temp_new(); + dst = dest_gpr(ctx, a->rd); /* Using x0 as the rs1 register specifier, encodes an infinite AVL */ if (a->rs1 == 0) { /* As the mask is at least one bit, RV_VLEN_MAX is >= VLMAX */ s1 = tcg_constant_tl(RV_VLEN_MAX); } else { - s1 = tcg_temp_new(); - gen_get_gpr(ctx, s1, a->rs1); + s1 = get_gpr(ctx, a->rs1, EXT_ZERO); } gen_helper_vsetvl(dst, cpu_env, s1, s2); gen_set_gpr(ctx, a->rd, dst); + gen_goto_tb(ctx, 0, ctx->pc_succ_insn); ctx->base.is_jmp = DISAS_NORETURN; - - tcg_temp_free(s1); - tcg_temp_free(dst); return true; } @@ -173,7 +165,7 @@ static bool ldst_us_trans(uint32_t vd, uint32_t rs1, uint32_t data, dest = tcg_temp_new_ptr(); mask = tcg_temp_new_ptr(); - base = tcg_temp_new(); + base = get_gpr(s, rs1, EXT_NONE); /* * As simd_desc supports at most 256 bytes, and in this implementation, @@ -184,7 +176,6 @@ static bool ldst_us_trans(uint32_t vd, uint32_t rs1, uint32_t data, */ desc = tcg_constant_i32(simd_desc(s->vlen / 8, s->vlen / 8, data)); - gen_get_gpr(s, base, rs1); tcg_gen_addi_ptr(dest, cpu_env, vreg_ofs(s, vd)); tcg_gen_addi_ptr(mask, cpu_env, vreg_ofs(s, 0)); @@ -192,7 +183,6 @@ static bool ldst_us_trans(uint32_t vd, uint32_t rs1, uint32_t data, tcg_temp_free_ptr(dest); tcg_temp_free_ptr(mask); - tcg_temp_free(base); gen_set_label(over); return true; } @@ -330,12 +320,10 @@ static bool ldst_stride_trans(uint32_t vd, uint32_t rs1, uint32_t rs2, dest = tcg_temp_new_ptr(); mask = tcg_temp_new_ptr(); - base = tcg_temp_new(); - stride = tcg_temp_new(); + base = get_gpr(s, rs1, EXT_NONE); + stride = get_gpr(s, rs2, EXT_NONE); desc = tcg_constant_i32(simd_desc(s->vlen / 8, s->vlen / 8, data)); - gen_get_gpr(s, base, rs1); - gen_get_gpr(s, stride, rs2); tcg_gen_addi_ptr(dest, cpu_env, vreg_ofs(s, vd)); tcg_gen_addi_ptr(mask, cpu_env, vreg_ofs(s, 0)); @@ -343,8 +331,6 @@ static bool ldst_stride_trans(uint32_t vd, uint32_t rs1, uint32_t rs2, tcg_temp_free_ptr(dest); tcg_temp_free_ptr(mask); - tcg_temp_free(base); - tcg_temp_free(stride); gen_set_label(over); return true; } @@ -458,10 +444,9 @@ static bool ldst_index_trans(uint32_t vd, uint32_t rs1, uint32_t vs2, dest = tcg_temp_new_ptr(); mask = tcg_temp_new_ptr(); index = tcg_temp_new_ptr(); - base = tcg_temp_new(); + base = get_gpr(s, rs1, EXT_NONE); desc = tcg_constant_i32(simd_desc(s->vlen / 8, s->vlen / 8, data)); - gen_get_gpr(s, base, rs1); tcg_gen_addi_ptr(dest, cpu_env, vreg_ofs(s, vd)); tcg_gen_addi_ptr(index, cpu_env, vreg_ofs(s, vs2)); tcg_gen_addi_ptr(mask, cpu_env, vreg_ofs(s, 0)); @@ -471,7 +456,6 @@ static bool ldst_index_trans(uint32_t vd, uint32_t rs1, uint32_t vs2, tcg_temp_free_ptr(dest); tcg_temp_free_ptr(mask); tcg_temp_free_ptr(index); - tcg_temp_free(base); gen_set_label(over); return true; } @@ -589,10 +573,9 @@ static bool ldff_trans(uint32_t vd, uint32_t rs1, uint32_t data, dest = tcg_temp_new_ptr(); mask = tcg_temp_new_ptr(); - base = tcg_temp_new(); + base = get_gpr(s, rs1, EXT_NONE); desc = tcg_constant_i32(simd_desc(s->vlen / 8, s->vlen / 8, data)); - gen_get_gpr(s, base, rs1); tcg_gen_addi_ptr(dest, cpu_env, vreg_ofs(s, vd)); tcg_gen_addi_ptr(mask, cpu_env, vreg_ofs(s, 0)); @@ -600,7 +583,6 @@ static bool ldff_trans(uint32_t vd, uint32_t rs1, uint32_t data, tcg_temp_free_ptr(dest); tcg_temp_free_ptr(mask); - tcg_temp_free(base); gen_set_label(over); return true; } @@ -665,10 +647,9 @@ static bool amo_trans(uint32_t vd, uint32_t rs1, uint32_t vs2, dest = tcg_temp_new_ptr(); mask = tcg_temp_new_ptr(); index = tcg_temp_new_ptr(); - base = tcg_temp_new(); + base = get_gpr(s, rs1, EXT_NONE); desc = tcg_constant_i32(simd_desc(s->vlen / 8, s->vlen / 8, data)); - gen_get_gpr(s, base, rs1); tcg_gen_addi_ptr(dest, cpu_env, vreg_ofs(s, vd)); tcg_gen_addi_ptr(index, cpu_env, vreg_ofs(s, vs2)); tcg_gen_addi_ptr(mask, cpu_env, vreg_ofs(s, 0)); @@ -678,7 +659,6 @@ static bool amo_trans(uint32_t vd, uint32_t rs1, uint32_t vs2, tcg_temp_free_ptr(dest); tcg_temp_free_ptr(mask); tcg_temp_free_ptr(index); - tcg_temp_free(base); gen_set_label(over); return true; } @@ -862,8 +842,7 @@ static bool opivx_trans(uint32_t vd, uint32_t rs1, uint32_t vs2, uint32_t vm, dest = tcg_temp_new_ptr(); mask = tcg_temp_new_ptr(); src2 = tcg_temp_new_ptr(); - src1 = tcg_temp_new(); - gen_get_gpr(s, src1, rs1); + src1 = get_gpr(s, rs1, EXT_NONE); data = FIELD_DP32(data, VDATA, MLEN, s->mlen); data = FIELD_DP32(data, VDATA, VM, vm); @@ -879,7 +858,6 @@ static bool opivx_trans(uint32_t vd, uint32_t rs1, uint32_t vs2, uint32_t vm, tcg_temp_free_ptr(dest); tcg_temp_free_ptr(mask); tcg_temp_free_ptr(src2); - tcg_temp_free(src1); gen_set_label(over); return true; } @@ -905,15 +883,12 @@ do_opivx_gvec(DisasContext *s, arg_rmrr *a, GVecGen2sFn *gvec_fn, if (a->vm && s->vl_eq_vlmax) { TCGv_i64 src1 = tcg_temp_new_i64(); - TCGv tmp = tcg_temp_new(); - gen_get_gpr(s, tmp, a->rs1); - tcg_gen_ext_tl_i64(src1, tmp); + tcg_gen_ext_tl_i64(src1, get_gpr(s, a->rs1, EXT_SIGN)); gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2), src1, MAXSZ(s), MAXSZ(s)); tcg_temp_free_i64(src1); - tcg_temp_free(tmp); return true; } return opivx_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s); @@ -1398,16 +1373,13 @@ do_opivx_gvec_shift(DisasContext *s, arg_rmrr *a, GVecGen2sFn32 *gvec_fn, if (a->vm && s->vl_eq_vlmax) { TCGv_i32 src1 = tcg_temp_new_i32(); - TCGv tmp = tcg_temp_new(); - gen_get_gpr(s, tmp, a->rs1); - tcg_gen_trunc_tl_i32(src1, tmp); + tcg_gen_trunc_tl_i32(src1, get_gpr(s, a->rs1, EXT_NONE)); tcg_gen_extract_i32(src1, src1, 0, s->sew + 3); gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2), src1, MAXSZ(s), MAXSZ(s)); tcg_temp_free_i32(src1); - tcg_temp_free(tmp); return true; } return opivx_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s); @@ -1665,8 +1637,7 @@ static bool trans_vmv_v_x(DisasContext *s, arg_vmv_v_x *a) TCGLabel *over = gen_new_label(); tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_vl, 0, over); - s1 = tcg_temp_new(); - gen_get_gpr(s, s1, a->rs1); + s1 = get_gpr(s, a->rs1, EXT_SIGN); if (s->vl_eq_vlmax) { tcg_gen_gvec_dup_tl(s->sew, vreg_ofs(s, a->rd), @@ -1690,7 +1661,6 @@ static bool trans_vmv_v_x(DisasContext *s, arg_vmv_v_x *a) tcg_temp_free_i64(s1_i64); } - tcg_temp_free(s1); gen_set_label(over); return true; } @@ -2412,7 +2382,7 @@ static bool trans_vmpopc_m(DisasContext *s, arg_rmr *a) mask = tcg_temp_new_ptr(); src2 = tcg_temp_new_ptr(); - dst = tcg_temp_new(); + dst = dest_gpr(s, a->rd); desc = tcg_constant_i32(simd_desc(s->vlen / 8, s->vlen / 8, data)); tcg_gen_addi_ptr(src2, cpu_env, vreg_ofs(s, a->rs2)); @@ -2423,7 +2393,6 @@ static bool trans_vmpopc_m(DisasContext *s, arg_rmr *a) tcg_temp_free_ptr(mask); tcg_temp_free_ptr(src2); - tcg_temp_free(dst); return true; } return false; @@ -2443,7 +2412,7 @@ static bool trans_vmfirst_m(DisasContext *s, arg_rmr *a) mask = tcg_temp_new_ptr(); src2 = tcg_temp_new_ptr(); - dst = tcg_temp_new(); + dst = dest_gpr(s, a->rd); desc = tcg_constant_i32(simd_desc(s->vlen / 8, s->vlen / 8, data)); tcg_gen_addi_ptr(src2, cpu_env, vreg_ofs(s, a->rs2)); @@ -2454,7 +2423,6 @@ static bool trans_vmfirst_m(DisasContext *s, arg_rmr *a) tcg_temp_free_ptr(mask); tcg_temp_free_ptr(src2); - tcg_temp_free(dst); return true; } return false; @@ -2638,7 +2606,7 @@ static void vec_element_loadi(DisasContext *s, TCGv_i64 dest, static bool trans_vext_x_v(DisasContext *s, arg_r *a) { TCGv_i64 tmp = tcg_temp_new_i64(); - TCGv dest = tcg_temp_new(); + TCGv dest = dest_gpr(s, a->rd); if (a->rs1 == 0) { /* Special case vmv.x.s rd, vs2. */ @@ -2648,10 +2616,10 @@ static bool trans_vext_x_v(DisasContext *s, arg_r *a) int vlmax = s->vlen >> (3 + s->sew); vec_element_loadx(s, tmp, a->rs2, cpu_gpr[a->rs1], vlmax); } + tcg_gen_trunc_i64_tl(dest, tmp); gen_set_gpr(s, a->rd, dest); - tcg_temp_free(dest); tcg_temp_free_i64(tmp); return true; }