diff options
| author | Juha Riihimäki <juha.riihimaki@nokia.com> | 2011-04-11 16:26:13 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-04-12 21:51:51 +0200 |
| commit | a5a14945da2c9ea8903c69af22274c33ad9488f7 (patch) | |
| tree | f7458857fc350b9d951c175e19d5d60458ba7f04 /target-arm | |
| parent | 25f84f79481db5363c638dd95d5c2a0a0e430cee (diff) | |
target-arm: Simplify three-register pairwise code
Since we know that the case of (pairwise && q) has been caught
earlier, we can simplify the register setup code for each pass
in the three-register-same-size Neon loop.
Signed-off-by: Juha Riihimäki <juha.riihimaki@nokia.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c index 5ffbace5ae..0cf933d021 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -4328,7 +4328,6 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) int count; int pairwise; int u; - int n; uint32_t imm, mask; TCGv tmp, tmp2, tmp3, tmp4, tmp5; TCGv_i64 tmp64; @@ -4480,16 +4479,12 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) if (pairwise) { /* Pairwise. */ - if (q) - n = (pass & 1) * 2; - else - n = 0; - if (pass < q + 1) { - tmp = neon_load_reg(rn, n); - tmp2 = neon_load_reg(rn, n + 1); + if (pass < 1) { + tmp = neon_load_reg(rn, 0); + tmp2 = neon_load_reg(rn, 1); } else { - tmp = neon_load_reg(rm, n); - tmp2 = neon_load_reg(rm, n + 1); + tmp = neon_load_reg(rm, 0); + tmp2 = neon_load_reg(rm, 1); } } else { /* Elementwise. */ @@ -5147,6 +5142,7 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) /* VMOV, VMVN. */ tmp = tcg_temp_new_i32(); if (op == 14 && invert) { + int n; uint32_t val; val = 0; for (n = 0; n < 4; n++) { @@ -5575,6 +5571,7 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) break; case 33: /* VTRN */ if (size == 2) { + int n; for (n = 0; n < (q ? 4 : 2); n += 2) { tmp = neon_load_reg(rm, n); tmp2 = neon_load_reg(rd, n + 1); @@ -5866,7 +5863,7 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) } } else if ((insn & (1 << 10)) == 0) { /* VTBL, VTBX. */ - n = ((insn >> 5) & 0x18) + 8; + int n = ((insn >> 5) & 0x18) + 8; if (insn & (1 << 6)) { tmp = neon_load_reg(rd, 0); } else { |