From f4dcf51cdcd25e8df150b0a394ccefc0611975dc Mon Sep 17 00:00:00 2001
From: Frank Chang <frank.chang@sifive.com>
Date: Tue, 18 Jan 2022 09:45:18 +0800
Subject: target/riscv: rvv-1.0: Add Zve32f support for widening type-convert
 insns

Vector widening conversion instructions are provided to and from all
supported integer EEWs for Zve32f extension.

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20220118014522.13613-16-frank.chang@sifive.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/insn_trans/trans_rvv.c.inc | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc
index b02bb55..f2d3c9e 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -77,6 +77,17 @@ static bool require_zve32f(DisasContext *s)
     return s->ext_zve32f ? s->sew <= MO_32 : true;
 }
 
+static bool require_scale_zve32f(DisasContext *s)
+{
+    /* RVV + Zve32f = RVV. */
+    if (has_ext(s, RVV)) {
+        return true;
+    }
+
+    /* Zve32f doesn't support FP64. (Section 18.2) */
+    return s->ext_zve64f ? s->sew <= MO_16 : true;
+}
+
 static bool require_zve64f(DisasContext *s)
 {
     /* RVV + Zve64f = RVV. */
@@ -2358,6 +2369,7 @@ static bool opfvv_widen_check(DisasContext *s, arg_rmrr *a)
            (s->sew != MO_8) &&
            vext_check_isa_ill(s) &&
            vext_check_dss(s, a->rd, a->rs1, a->rs2, a->vm) &&
+           require_scale_zve32f(s) &&
            require_scale_zve64f(s);
 }
 
@@ -2398,6 +2410,7 @@ static bool opfvf_widen_check(DisasContext *s, arg_rmrr *a)
            (s->sew != MO_8) &&
            vext_check_isa_ill(s) &&
            vext_check_ds(s, a->rd, a->rs2, a->vm) &&
+           require_scale_zve32f(s) &&
            require_scale_zve64f(s);
 }
 
@@ -2429,6 +2442,7 @@ static bool opfwv_widen_check(DisasContext *s, arg_rmrr *a)
            (s->sew != MO_8) &&
            vext_check_isa_ill(s) &&
            vext_check_dds(s, a->rd, a->rs1, a->rs2, a->vm) &&
+           require_scale_zve32f(s) &&
            require_scale_zve64f(s);
 }
 
@@ -2469,6 +2483,7 @@ static bool opfwf_widen_check(DisasContext *s, arg_rmrr *a)
            (s->sew != MO_8) &&
            vext_check_isa_ill(s) &&
            vext_check_dd(s, a->rd, a->rs2, a->vm) &&
+           require_scale_zve32f(s) &&
            require_scale_zve64f(s);
 }
 
@@ -2733,6 +2748,7 @@ static bool opxfv_widen_check(DisasContext *s, arg_rmr *a)
 {
     return opfv_widen_check(s, a) &&
            require_rvf(s) &&
+           require_zve32f(s) &&
            require_zve64f(s);
 }
 
@@ -2741,6 +2757,7 @@ static bool opffv_widen_check(DisasContext *s, arg_rmr *a)
     return opfv_widen_check(s, a) &&
            require_scale_rvf(s) &&
            (s->sew != MO_8) &&
+           require_scale_zve32f(s) &&
            require_scale_zve64f(s);
 }
 
@@ -2793,6 +2810,7 @@ static bool opfxv_widen_check(DisasContext *s, arg_rmr *a)
            vext_check_isa_ill(s) &&
            /* OPFV widening instructions ignore vs1 check */
            vext_check_ds(s, a->rd, a->rs2, a->vm) &&
+           require_scale_zve32f(s) &&
            require_scale_zve64f(s);
 }
 
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