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[RFC v2 18/76] target/riscv: introduce more imm value modes in translato
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From: |
frank . chang |
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Subject: |
[RFC v2 18/76] target/riscv: introduce more imm value modes in translator functions |
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Date: |
Wed, 22 Jul 2020 17:15:41 +0800 |
From: Frank Chang <frank.chang@sifive.com>
Immediate value in translator function is extended not only
zero-extended and sign-extended but with more modes to be applicable
with multiple formats of vector instructions.
* IMM_ZX: Zero-extended
* IMM_SX: Sign-extended
* IMM_TRUNC_SEW: Truncate to log(SEW) bit
* IMM_TRUNC_2SEW: Truncate to log(2*SEW) bit
Signed-off-by: Frank Chang <frank.chang@sifive.com>
---
target/riscv/insn_trans/trans_rvv.inc.c | 120 +++++++++++++++---------
1 file changed, 78 insertions(+), 42 deletions(-)
diff --git a/target/riscv/insn_trans/trans_rvv.inc.c
b/target/riscv/insn_trans/trans_rvv.inc.c
index 13b6098153..22b4e11a20 100644
--- a/target/riscv/insn_trans/trans_rvv.inc.c
+++ b/target/riscv/insn_trans/trans_rvv.inc.c
@@ -1300,8 +1300,13 @@ static void tcg_gen_gvec_rsubs(unsigned vece, uint32_t
dofs, uint32_t aofs,
GEN_OPIVX_GVEC_TRANS(vrsub_vx, rsubs)
+#define IMM_ZX 0 /* Zero-extended */
+#define IMM_SX 1 /* Sign-extended */
+#define IMM_TRUNC_SEW 2 /* Truncate to log(SEW) bits */
+#define IMM_TRUNC_2SEW 3 /* Truncate to log(2*SEW) bits */
+
static bool opivi_trans(uint32_t vd, uint32_t imm, uint32_t vs2, uint32_t vm,
- gen_helper_opivx *fn, DisasContext *s, int zx)
+ gen_helper_opivx *fn, DisasContext *s, int imm_mode)
{
TCGv_ptr dest, src2, mask;
TCGv src1;
@@ -1314,10 +1319,24 @@ static bool opivi_trans(uint32_t vd, uint32_t imm,
uint32_t vs2, uint32_t vm,
dest = tcg_temp_new_ptr();
mask = tcg_temp_new_ptr();
src2 = tcg_temp_new_ptr();
- if (zx) {
- src1 = tcg_const_tl(imm);
- } else {
+ switch (imm_mode) {
+ case IMM_ZX:
+ src1 = tcg_const_tl(extract64(imm, 0, 5));
+ break;
+ case IMM_SX:
src1 = tcg_const_tl(sextract64(imm, 0, 5));
+ break;
+ case IMM_TRUNC_SEW:
+ src1 = tcg_const_tl(
+ extract64(imm, 0, 5) & ((1 << (s->sew + 3)) - 1) & 0x1f);
+ break;
+ case IMM_TRUNC_2SEW:
+ src1 = tcg_const_tl(
+ extract64(imm, 0, 5) & ((2 << (s->sew + 3)) - 1) & 0x1f);
+ break;
+ default:
+ g_assert_not_reached();
+ break;
}
data = FIELD_DP32(data, VDATA, VM, vm);
data = FIELD_DP32(data, VDATA, LMUL, s->lmul);
@@ -1346,28 +1365,44 @@ typedef void GVecGen2iFn(unsigned, uint32_t, uint32_t,
int64_t,
static inline bool
do_opivi_gvec(DisasContext *s, arg_rmrr *a, GVecGen2iFn *gvec_fn,
- gen_helper_opivx *fn, int zx)
+ gen_helper_opivx *fn, int imm_mode)
{
if (!opivx_check(s, a)) {
return false;
}
if (a->vm && s->vl_eq_vlmax) {
- if (zx) {
+ switch (imm_mode) {
+ case IMM_ZX:
gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2),
extract64(a->rs1, 0, 5), MAXSZ(s), MAXSZ(s));
- } else {
+ break;
+ case IMM_SX:
gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2),
sextract64(a->rs1, 0, 5), MAXSZ(s), MAXSZ(s));
+ break;
+ case IMM_TRUNC_SEW:
+ gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2),
+ extract64(a->rs1, 0, 5) & ((1 << (s->sew + 3)) - 1) & 0x1f,
+ MAXSZ(s), MAXSZ(s));
+ break;
+ case IMM_TRUNC_2SEW:
+ gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2),
+ extract64(a->rs1, 0, 5) & ((2 << (s->sew + 3)) - 1) & 0x1f,
+ MAXSZ(s), MAXSZ(s));
+ break;
+ default:
+ g_assert_not_reached();
+ break;
}
mark_vs_dirty(s);
return true;
}
- return opivi_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s, zx);
+ return opivi_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s, imm_mode);
}
/* OPIVI with GVEC IR */
-#define GEN_OPIVI_GVEC_TRANS(NAME, ZX, OPIVX, SUF) \
+#define GEN_OPIVI_GVEC_TRANS(NAME, IMM_MODE, OPIVX, SUF) \
static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \
{ \
static gen_helper_opivx * const fns[4] = { \
@@ -1375,10 +1410,10 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a)
\
gen_helper_##OPIVX##_w, gen_helper_##OPIVX##_d, \
}; \
return do_opivi_gvec(s, a, tcg_gen_gvec_##SUF, \
- fns[s->sew], ZX); \
+ fns[s->sew], IMM_MODE); \
}
-GEN_OPIVI_GVEC_TRANS(vadd_vi, 0, vadd_vx, addi)
+GEN_OPIVI_GVEC_TRANS(vadd_vi, IMM_SX, vadd_vx, addi)
static void tcg_gen_gvec_rsubi(unsigned vece, uint32_t dofs, uint32_t aofs,
int64_t c, uint32_t oprsz, uint32_t maxsz)
@@ -1388,7 +1423,7 @@ static void tcg_gen_gvec_rsubi(unsigned vece, uint32_t
dofs, uint32_t aofs,
tcg_temp_free_i64(tmp);
}
-GEN_OPIVI_GVEC_TRANS(vrsub_vi, 0, vrsub_vx, rsubi)
+GEN_OPIVI_GVEC_TRANS(vrsub_vi, IMM_SX, vrsub_vx, rsubi)
/* Vector Widening Integer Add/Subtract */
@@ -1649,7 +1684,7 @@ GEN_OPIVX_TRANS(vmadc_vxm, opivx_vmadc_check)
GEN_OPIVX_TRANS(vmsbc_vxm, opivx_vmadc_check)
/* OPIVI without GVEC IR */
-#define GEN_OPIVI_TRANS(NAME, ZX, OPIVX, CHECK) \
+#define GEN_OPIVI_TRANS(NAME, IMM_MODE, OPIVX, CHECK) \
static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \
{ \
if (CHECK(s, a)) { \
@@ -1658,13 +1693,13 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a)
\
gen_helper_##OPIVX##_w, gen_helper_##OPIVX##_d, \
}; \
return opivi_trans(a->rd, a->rs1, a->rs2, a->vm, \
- fns[s->sew], s, ZX); \
+ fns[s->sew], s, IMM_MODE); \
} \
return false; \
}
-GEN_OPIVI_TRANS(vadc_vim, 0, vadc_vxm, opivx_vadc_check)
-GEN_OPIVI_TRANS(vmadc_vim, 0, vmadc_vxm, opivx_vmadc_check)
+GEN_OPIVI_TRANS(vadc_vim, IMM_SX, vadc_vxm, opivx_vadc_check)
+GEN_OPIVI_TRANS(vmadc_vim, IMM_SX, vmadc_vxm, opivx_vmadc_check)
/* Vector Bitwise Logical Instructions */
GEN_OPIVV_GVEC_TRANS(vand_vv, and)
@@ -1673,9 +1708,9 @@ GEN_OPIVV_GVEC_TRANS(vxor_vv, xor)
GEN_OPIVX_GVEC_TRANS(vand_vx, ands)
GEN_OPIVX_GVEC_TRANS(vor_vx, ors)
GEN_OPIVX_GVEC_TRANS(vxor_vx, xors)
-GEN_OPIVI_GVEC_TRANS(vand_vi, 0, vand_vx, andi)
-GEN_OPIVI_GVEC_TRANS(vor_vi, 0, vor_vx, ori)
-GEN_OPIVI_GVEC_TRANS(vxor_vi, 0, vxor_vx, xori)
+GEN_OPIVI_GVEC_TRANS(vand_vi, IMM_SX, vand_vx, andi)
+GEN_OPIVI_GVEC_TRANS(vor_vi, IMM_SX, vor_vx, ori)
+GEN_OPIVI_GVEC_TRANS(vxor_vi, IMM_SX, vxor_vx, xori)
/* Vector Single-Width Bit Shift Instructions */
GEN_OPIVV_GVEC_TRANS(vsll_vv, shlv)
@@ -1726,9 +1761,9 @@ GEN_OPIVX_GVEC_SHIFT_TRANS(vsll_vx, shls)
GEN_OPIVX_GVEC_SHIFT_TRANS(vsrl_vx, shrs)
GEN_OPIVX_GVEC_SHIFT_TRANS(vsra_vx, sars)
-GEN_OPIVI_GVEC_TRANS(vsll_vi, 1, vsll_vx, shli)
-GEN_OPIVI_GVEC_TRANS(vsrl_vi, 1, vsrl_vx, shri)
-GEN_OPIVI_GVEC_TRANS(vsra_vi, 1, vsra_vx, sari)
+GEN_OPIVI_GVEC_TRANS(vsll_vi, IMM_ZX, vsll_vx, shli)
+GEN_OPIVI_GVEC_TRANS(vsrl_vi, IMM_ZX, vsrl_vx, shri)
+GEN_OPIVI_GVEC_TRANS(vsra_vi, IMM_ZX, vsra_vx, sari)
/* Vector Narrowing Integer Right Shift Instructions */
static bool opivv_narrow_check(DisasContext *s, arg_rmrr *a)
@@ -1795,7 +1830,7 @@ GEN_OPIVX_NARROW_TRANS(vnsra_vx)
GEN_OPIVX_NARROW_TRANS(vnsrl_vx)
/* OPIVI with NARROW */
-#define GEN_OPIVI_NARROW_TRANS(NAME, ZX, OPIVX) \
+#define GEN_OPIVI_NARROW_TRANS(NAME, IMM_MODE, OPIVX) \
static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \
{ \
if (opivx_narrow_check(s, a)) { \
@@ -1805,13 +1840,13 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a)
\
gen_helper_##OPIVX##_w, \
}; \
return opivi_trans(a->rd, a->rs1, a->rs2, a->vm, \
- fns[s->sew], s, ZX); \
+ fns[s->sew], s, IMM_MODE); \
} \
return false; \
}
-GEN_OPIVI_NARROW_TRANS(vnsra_vi, 1, vnsra_vx)
-GEN_OPIVI_NARROW_TRANS(vnsrl_vi, 1, vnsrl_vx)
+GEN_OPIVI_NARROW_TRANS(vnsra_vi, IMM_ZX, vnsra_vx)
+GEN_OPIVI_NARROW_TRANS(vnsrl_vi, IMM_ZX, vnsrl_vx)
/* Vector Integer Comparison Instructions */
/*
@@ -1849,12 +1884,12 @@ GEN_OPIVX_TRANS(vmsle_vx, opivx_cmp_check)
GEN_OPIVX_TRANS(vmsgtu_vx, opivx_cmp_check)
GEN_OPIVX_TRANS(vmsgt_vx, opivx_cmp_check)
-GEN_OPIVI_TRANS(vmseq_vi, 0, vmseq_vx, opivx_cmp_check)
-GEN_OPIVI_TRANS(vmsne_vi, 0, vmsne_vx, opivx_cmp_check)
-GEN_OPIVI_TRANS(vmsleu_vi, 1, vmsleu_vx, opivx_cmp_check)
-GEN_OPIVI_TRANS(vmsle_vi, 0, vmsle_vx, opivx_cmp_check)
-GEN_OPIVI_TRANS(vmsgtu_vi, 1, vmsgtu_vx, opivx_cmp_check)
-GEN_OPIVI_TRANS(vmsgt_vi, 0, vmsgt_vx, opivx_cmp_check)
+GEN_OPIVI_TRANS(vmseq_vi, IMM_SX, vmseq_vx, opivx_cmp_check)
+GEN_OPIVI_TRANS(vmsne_vi, IMM_SX, vmsne_vx, opivx_cmp_check)
+GEN_OPIVI_TRANS(vmsleu_vi, IMM_ZX, vmsleu_vx, opivx_cmp_check)
+GEN_OPIVI_TRANS(vmsle_vi, IMM_SX, vmsle_vx, opivx_cmp_check)
+GEN_OPIVI_TRANS(vmsgtu_vi, IMM_ZX, vmsgtu_vx, opivx_cmp_check)
+GEN_OPIVI_TRANS(vmsgt_vi, IMM_SX, vmsgt_vx, opivx_cmp_check)
/* Vector Integer Min/Max Instructions */
GEN_OPIVV_GVEC_TRANS(vminu_vv, umin)
@@ -2037,7 +2072,7 @@ static bool trans_vmv_v_i(DisasContext *s, arg_vmv_v_i *a)
GEN_OPIVV_TRANS(vmerge_vvm, opivv_vadc_check)
GEN_OPIVX_TRANS(vmerge_vxm, opivx_vadc_check)
-GEN_OPIVI_TRANS(vmerge_vim, 0, vmerge_vxm, opivx_vadc_check)
+GEN_OPIVI_TRANS(vmerge_vim, IMM_SX, vmerge_vxm, opivx_vadc_check)
/*
*** Vector Fixed-Point Arithmetic Instructions
@@ -2052,8 +2087,8 @@ GEN_OPIVX_TRANS(vsaddu_vx, opivx_check)
GEN_OPIVX_TRANS(vsadd_vx, opivx_check)
GEN_OPIVX_TRANS(vssubu_vx, opivx_check)
GEN_OPIVX_TRANS(vssub_vx, opivx_check)
-GEN_OPIVI_TRANS(vsaddu_vi, 1, vsaddu_vx, opivx_check)
-GEN_OPIVI_TRANS(vsadd_vi, 0, vsadd_vx, opivx_check)
+GEN_OPIVI_TRANS(vsaddu_vi, IMM_ZX, vsaddu_vx, opivx_check)
+GEN_OPIVI_TRANS(vsadd_vi, IMM_SX, vsadd_vx, opivx_check)
/* Vector Single-Width Averaging Add and Subtract */
GEN_OPIVV_TRANS(vaadd_vv, opivv_check)
@@ -2080,16 +2115,16 @@ GEN_OPIVV_TRANS(vssrl_vv, opivv_check)
GEN_OPIVV_TRANS(vssra_vv, opivv_check)
GEN_OPIVX_TRANS(vssrl_vx, opivx_check)
GEN_OPIVX_TRANS(vssra_vx, opivx_check)
-GEN_OPIVI_TRANS(vssrl_vi, 1, vssrl_vx, opivx_check)
-GEN_OPIVI_TRANS(vssra_vi, 0, vssra_vx, opivx_check)
+GEN_OPIVI_TRANS(vssrl_vi, IMM_ZX, vssrl_vx, opivx_check)
+GEN_OPIVI_TRANS(vssra_vi, IMM_SX, vssra_vx, opivx_check)
/* Vector Narrowing Fixed-Point Clip Instructions */
GEN_OPIVV_NARROW_TRANS(vnclipu_vv)
GEN_OPIVV_NARROW_TRANS(vnclip_vv)
GEN_OPIVX_NARROW_TRANS(vnclipu_vx)
GEN_OPIVX_NARROW_TRANS(vnclip_vx)
-GEN_OPIVI_NARROW_TRANS(vnclipu_vi, 1, vnclipu_vx)
-GEN_OPIVI_NARROW_TRANS(vnclip_vi, 1, vnclip_vx)
+GEN_OPIVI_NARROW_TRANS(vnclipu_vi, IMM_ZX, vnclipu_vx)
+GEN_OPIVI_NARROW_TRANS(vnclip_vi, IMM_ZX, vnclip_vx)
/*
*** Vector Float Point Arithmetic Instructions
@@ -3091,7 +3126,7 @@ static bool slideup_check(DisasContext *s, arg_rmrr *a)
GEN_OPIVX_TRANS(vslideup_vx, slideup_check)
GEN_OPIVX_TRANS(vslide1up_vx, slideup_check)
-GEN_OPIVI_TRANS(vslideup_vi, 1, vslideup_vx, slideup_check)
+GEN_OPIVI_TRANS(vslideup_vi, IMM_ZX, vslideup_vx, slideup_check)
static bool slidedown_check(DisasContext *s, arg_rmrr *a)
{
@@ -3102,7 +3137,7 @@ static bool slidedown_check(DisasContext *s, arg_rmrr *a)
GEN_OPIVX_TRANS(vslidedown_vx, slidedown_check)
GEN_OPIVX_TRANS(vslide1down_vx, slidedown_check)
-GEN_OPIVI_TRANS(vslidedown_vi, 1, vslidedown_vx, slidedown_check)
+GEN_OPIVI_TRANS(vslidedown_vi, IMM_ZX, vslidedown_vx, slidedown_check)
/* Vector Register Gather Instruction */
static bool vrgather_vv_check(DisasContext *s, arg_rmrr *a)
@@ -3181,7 +3216,8 @@ static bool trans_vrgather_vi(DisasContext *s, arg_rmrr
*a)
gen_helper_vrgather_vx_b, gen_helper_vrgather_vx_h,
gen_helper_vrgather_vx_w, gen_helper_vrgather_vx_d
};
- return opivi_trans(a->rd, a->rs1, a->rs2, a->vm, fns[s->sew], s, 1);
+ return opivi_trans(a->rd, a->rs1, a->rs2, a->vm, fns[s->sew],
+ s, IMM_ZX);
}
return true;
}
--
2.17.1
- Re: [RFC v2 13/76] target/riscv: rvv-0.9: add vlenb register, (continued)
- [RFC v2 14/76] target/riscv: rvv-0.9: remove MLEN calculations, frank . chang, 2020/07/22
- [RFC v2 15/76] target/riscv: rvv-0.9: add fractional LMUL, frank . chang, 2020/07/22
- [RFC v2 16/76] target/riscv: rvv-0.9: add VMA and VTA, frank . chang, 2020/07/22
- [RFC v2 17/76] target/riscv: rvv-0.9: update check functions, frank . chang, 2020/07/22
- [RFC v2 18/76] target/riscv: introduce more imm value modes in translator functions,
frank . chang <=
- [RFC v2 19/76] target/riscv: rvv-0.9: add narrower_nanbox_fpr helper, frank . chang, 2020/07/22
- [RFC v2 20/76] target/riscv: rvv-0.9: apply narrower nanbox helper in opfvf_trans, frank . chang, 2020/07/22
- [RFC v2 21/76] target/riscv: rvv-0.9: configure instructions, frank . chang, 2020/07/22
- [RFC v2 22/76] target/riscv: rvv-0.9: stride load and store instructions, frank . chang, 2020/07/22
- [RFC v2 23/76] target/riscv: rvv-0.9: index load and store instructions, frank . chang, 2020/07/22