From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: Alistair.Francis@wdc.com, bin.meng@windriver.com,
qemu-riscv@nongnu.org, zhiwei_liu@c-sky.com
Subject: [PATCH v2 21/21] target/riscv: Use {get,dest}_gpr for RVV
Date: Tue, 17 Aug 2021 11:18:03 -1000 [thread overview]
Message-ID: <20210817211803.283639-22-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210817211803.283639-1-richard.henderson@linaro.org>
Remove gen_get_gpr, as the function becomes unused.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/riscv/translate.c | 13 ++---
target/riscv/insn_trans/trans_rvv.c.inc | 74 +++++++------------------
2 files changed, 26 insertions(+), 61 deletions(-)
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 75e83fb41f..056d474faa 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -231,11 +231,6 @@ 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) {
@@ -634,9 +629,11 @@ 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;
}
--
2.25.1
prev parent reply other threads:[~2021-08-17 21:28 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-17 21:17 [PATCH v2 00/21] target/riscv: Use tcg_constant_* Richard Henderson
2021-08-17 21:17 ` [PATCH v2 01/21] " Richard Henderson
2021-08-18 7:23 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 02/21] target/riscv: Clean up division helpers Richard Henderson
2021-08-18 9:20 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 03/21] target/riscv: Add DisasContext to gen_get_gpr, gen_set_gpr Richard Henderson
2021-08-17 22:15 ` Philippe Mathieu-Daudé
2021-08-18 9:27 ` Bin Meng
2021-08-19 6:20 ` Alistair Francis
2021-08-17 21:17 ` [PATCH v2 04/21] target/riscv: Introduce DisasExtend and new helpers Richard Henderson
2021-08-18 10:58 ` Bin Meng
2021-08-19 1:16 ` Richard Henderson
2021-08-19 2:01 ` Richard Henderson
2021-08-19 6:25 ` Alistair Francis
2021-08-17 21:17 ` [PATCH v2 05/21] target/riscv: Add DisasExtend to gen_arith* Richard Henderson
2021-08-19 2:42 ` Bin Meng
2021-08-19 6:28 ` Alistair Francis
2021-08-17 21:17 ` [PATCH v2 06/21] target/riscv: Remove gen_arith_div* Richard Henderson
2021-08-19 2:43 ` Bin Meng
2021-08-19 6:28 ` Alistair Francis
2021-08-17 21:17 ` [PATCH v2 07/21] target/riscv: Use gen_arith for mulh and mulhu Richard Henderson
2021-08-19 3:03 ` Bin Meng
2021-08-19 6:29 ` Alistair Francis
2021-08-17 21:17 ` [PATCH v2 08/21] target/riscv: Move gen_* helpers for RVM Richard Henderson
2021-08-17 22:19 ` Philippe Mathieu-Daudé
2021-08-19 3:03 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 09/21] target/riscv: Move gen_* helpers for RVB Richard Henderson
2021-08-17 22:20 ` Philippe Mathieu-Daudé
2021-08-19 3:03 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 10/21] target/riscv: Add DisasExtend to gen_unary Richard Henderson
2021-08-17 21:17 ` [PATCH v2 11/21] target/riscv: Use DisasExtend in shift operations Richard Henderson
2021-08-19 6:13 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 12/21] target/riscv: Add gen_greviw Richard Henderson
2021-08-17 21:17 ` [PATCH v2 13/21] target/riscv: Use get_gpr in branches Richard Henderson
2021-08-19 6:19 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 14/21] target/riscv: Use {get, dest}_gpr for integer load/store Richard Henderson
2021-08-19 6:22 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 15/21] target/riscv: Reorg csr instructions Richard Henderson
2021-08-19 7:08 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 16/21] target/riscv: Use {get,dest}_gpr for RVA Richard Henderson
2021-08-19 8:04 ` Bin Meng
2021-08-17 21:17 ` [PATCH v2 17/21] target/riscv: Use gen_shift_imm_fn for slli_uw Richard Henderson
2021-08-17 21:18 ` [PATCH v2 18/21] target/riscv: Use {get,dest}_gpr for RVF Richard Henderson
2021-08-19 8:04 ` Bin Meng
2021-08-17 21:18 ` [PATCH v2 19/21] target/riscv: Use {get,dest}_gpr for RVD Richard Henderson
2021-08-19 8:04 ` Bin Meng
2021-08-17 21:18 ` [PATCH v2 20/21] target/riscv: Tidy trans_rvh.c.inc Richard Henderson
2021-08-17 22:24 ` Philippe Mathieu-Daudé
2021-08-17 21:18 ` Richard Henderson [this message]
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