OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

target/arm: Use gvec for NEON VMOV, VMVN, VBIC & VORR (immediate)

Browse Source 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181011205206.3552-8-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2018-10-24 07:50:19 +01:00 committed by Peter Maydell
parent 32f91fb71f
commit 246fa4aca9
1 changed files with 39 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
target/arm/translate.c
View File

@ -6641,7 +6641,8 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
return 1;
}
} else { /* (insn & 0x00380080) == 0 */
int invert;
int invert, reg_ofs, vec_size;
if (q && (rd & 1)) {
return 1;
}
@ -6681,8 +6682,9 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
break;
case 14:
imm |= (imm << 8) | (imm << 16) | (imm << 24);
if (invert)
if (invert) {
imm = ~imm;
}
break;
case 15:
if (invert) {
@ -6692,36 +6694,45 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
| ((imm & 0x40) ? (0x1f << 25) : (1 << 30));
break;
}
if (invert)
if (invert) {
imm = ~imm;
}
for (pass = 0; pass < (q ? 4 : 2); pass++) {
if (op & 1 && op < 12) {
tmp = neon_load_reg(rd, pass);
if (invert) {
/* The immediate value has already been inverted, so
BIC becomes AND. */
tcg_gen_andi_i32(tmp, tmp, imm);
} else {
tcg_gen_ori_i32(tmp, tmp, imm);
}
reg_ofs = neon_reg_offset(rd, 0);
vec_size = q ? 16 : 8;
if (op & 1 && op < 12) {
if (invert) {
/* The immediate value has already been inverted,
* so BIC becomes AND.
*/
tcg_gen_gvec_andi(MO_32, reg_ofs, reg_ofs, imm,
vec_size, vec_size);
} else {
/* VMOV, VMVN. */
tmp = tcg_temp_new_i32();
if (op == 14 && invert) {
int n;
uint32_t val;
val = 0;
for (n = 0; n < 4; n++) {
if (imm & (1 << (n + (pass & 1) * 4)))
val |= 0xff << (n * 8);
}
tcg_gen_movi_i32(tmp, val);
} else {
tcg_gen_movi_i32(tmp, imm);
}
tcg_gen_gvec_ori(MO_32, reg_ofs, reg_ofs, imm,
vec_size, vec_size);
}
} else {
/* VMOV, VMVN. */
if (op == 14 && invert) {
TCGv_i64 t64 = tcg_temp_new_i64();
for (pass = 0; pass <= q; ++pass) {
uint64_t val = 0;
int n;
for (n = 0; n < 8; n++) {
if (imm & (1 << (n + pass * 8))) {
val |= 0xffull << (n * 8);
}
}
tcg_gen_movi_i64(t64, val);
neon_store_reg64(t64, rd + pass);
}
tcg_temp_free_i64(t64);
} else {
tcg_gen_gvec_dup32i(reg_ofs, vec_size, vec_size, imm);
}
neon_store_reg(rd, pass, tmp);
}
}
} else { /* (insn & 0x00800010 == 0x00800000) */