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target/arm: Convert Neon 3-reg-same compare insns to decodetree

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Convert the Neon integer 3-reg-same compare insns VCGE, VCGT,
VCEQ, VACGE and VACGT to decodetree.

Backports commit 727ff1d63213e6666e511956903b9e97a339ec7e from qemu
This commit is contained in:
Peter Maydell 2020-05-15 23:37:51 -04:00 committed by Lioncash
parent 042df686ca
commit 05e72483f4
3 changed files with 13 additions and 37 deletions
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5
qemu/target/arm/neon-dp.decode
View file

@ -183,5 +183,10 @@ VABD_fp_3s 1111 001 1 0 . 1 . .... .... 1101 ... 0 .... @3same_fp
VMLA_fp_3s 1111 001 0 0 . 0 . .... .... 1101 ... 1 .... @3same_fp
VMLS_fp_3s 1111 001 0 0 . 1 . .... .... 1101 ... 1 .... @3same_fp
VMUL_fp_3s 1111 001 1 0 . 0 . .... .... 1101 ... 1 .... @3same_fp
VCEQ_fp_3s 1111 001 0 0 . 0 . .... .... 1110 ... 0 .... @3same_fp
VCGE_fp_3s 1111 001 1 0 . 0 . .... .... 1110 ... 0 .... @3same_fp
VACGE_fp_3s 1111 001 1 0 . 0 . .... .... 1110 ... 1 .... @3same_fp
VCGT_fp_3s 1111 001 1 0 . 1 . .... .... 1110 ... 0 .... @3same_fp
VACGT_fp_3s 1111 001 1 0 . 1 . .... .... 1110 ... 1 .... @3same_fp
VPMAX_fp_3s 1111 001 1 0 . 0 . .... .... 1111 ... 0 .... @3same_fp_q0
VPMIN_fp_3s 1111 001 1 0 . 1 . .... .... 1111 ... 0 .... @3same_fp_q0

6
qemu/target/arm/translate-neon.inc.c
View file

@ -1133,6 +1133,12 @@ DO_3S_FP_GVEC(VMUL, gen_helper_gvec_fmul_s)
return do_3same_fp(s, a, FUNC, READS_VD); \
}
DO_3S_FP(VCEQ, gen_helper_neon_ceq_f32, false)
DO_3S_FP(VCGE, gen_helper_neon_cge_f32, false)
DO_3S_FP(VCGT, gen_helper_neon_cgt_f32, false)
DO_3S_FP(VACGE, gen_helper_neon_acge_f32, false)
DO_3S_FP(VACGT, gen_helper_neon_acgt_f32, false)
static void gen_VMLA_fp_3s(TCGContext *s, TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm,
TCGv_ptr fpstatus)
{

39
qemu/target/arm/translate.c
View file

@ -5560,6 +5560,8 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
case NEON_3R_VQDMULH_VQRDMULH:
case NEON_3R_FLOAT_ARITH:
case NEON_3R_FLOAT_MULTIPLY:
case NEON_3R_FLOAT_CMP:
case NEON_3R_FLOAT_ACMP:
/* Already handled by decodetree */
return 1;
}
@ -5574,17 +5576,6 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
return 1; /* VPMIN/VPMAX handled by decodetree */
}
break;
case NEON_3R_FLOAT_CMP:
if (!u && size) {
/* no encoding for U=0 C=1x */
return 1;
}
break;
case NEON_3R_FLOAT_ACMP:
if (!u) {
return 1;
}
break;
case NEON_3R_FLOAT_MISC:
/* VMAXNM/VMINNM in ARMv8 */
if (u && !arm_dc_feature(s, ARM_FEATURE_V8)) {
@ -5606,32 +5597,6 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
tmp = neon_load_reg(s, rn, pass);
tmp2 = neon_load_reg(s, rm, pass);
switch (op) {
case NEON_3R_FLOAT_CMP:
{
TCGv_ptr fpstatus = get_fpstatus_ptr(tcg_ctx, 1);
if (!u) {
gen_helper_neon_ceq_f32(tcg_ctx, tmp, tmp, tmp2, fpstatus);
} else {
if (size == 0) {
gen_helper_neon_cge_f32(tcg_ctx, tmp, tmp, tmp2, fpstatus);
} else {
gen_helper_neon_cgt_f32(tcg_ctx, tmp, tmp, tmp2, fpstatus);
}
}
tcg_temp_free_ptr(tcg_ctx, fpstatus);
break;
}
case NEON_3R_FLOAT_ACMP:
{
TCGv_ptr fpstatus = get_fpstatus_ptr(tcg_ctx, 1);
if (size == 0) {
gen_helper_neon_acge_f32(tcg_ctx, tmp, tmp, tmp2, fpstatus);
} else {
gen_helper_neon_acgt_f32(tcg_ctx, tmp, tmp, tmp2, fpstatus);
}
tcg_temp_free_ptr(tcg_ctx, fpstatus);
break;
}
case NEON_3R_FLOAT_MINMAX:
{
TCGv_ptr fpstatus = get_fpstatus_ptr(tcg_ctx, 1);