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target-mips: optimize gen_compute_branch1() 

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6955 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-03-29 15:44:34 +00:00
parent 58a2c43689
commit d94536f417
1 changed files with 57 additions and 107 deletions
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164
target-mips/translate.c
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@ -643,18 +643,12 @@ static inline void gen_store_fpr64 (DisasContext *ctx, TCGv_i64 t, int reg)
} }
} }
static inline void get_fp_cond (TCGv_i32 t) static inline int get_fp_bit (int cc)
{ {
TCGv_i32 r_tmp1 = tcg_temp_new_i32(); if (cc)
TCGv_i32 r_tmp2 = tcg_temp_new_i32(); return 24 + cc;
else
tcg_gen_shri_i32(r_tmp2, fpu_fcr31, 24); return 23;
tcg_gen_andi_i32(r_tmp2, r_tmp2, 0xfe);
tcg_gen_shri_i32(r_tmp1, fpu_fcr31, 23);
tcg_gen_andi_i32(r_tmp1, r_tmp1, 0x1);
tcg_gen_or_i32(t, r_tmp1, r_tmp2);
tcg_temp_free_i32(r_tmp1);
tcg_temp_free_i32(r_tmp2);
} }
#define FOP_CONDS(type, fmt, bits) \ #define FOP_CONDS(type, fmt, bits) \
@ -5500,132 +5494,88 @@ static void gen_compute_branch1 (CPUState *env, DisasContext *ctx, uint32_t op,
switch (op) { switch (op) {
case OPC_BC1F: case OPC_BC1F:
{ tcg_gen_shri_i32(t0, fpu_fcr31, get_fp_bit(cc));
int l1 = gen_new_label(); tcg_gen_not_i32(t0, t0);
int l2 = gen_new_label(); tcg_gen_andi_i32(t0, t0, 1);
tcg_gen_extu_i32_tl(bcond, t0);
get_fp_cond(t0);
tcg_gen_andi_i32(t0, t0, 0x1 << cc);
tcg_gen_brcondi_i32(TCG_COND_EQ, t0, 0, l1);
tcg_gen_movi_tl(bcond, 0);
tcg_gen_br(l2);
gen_set_label(l1);
tcg_gen_movi_tl(bcond, 1);
gen_set_label(l2);
}
opn = "bc1f"; opn = "bc1f";
goto not_likely; goto not_likely;
case OPC_BC1FL: case OPC_BC1FL:
{ tcg_gen_shri_i32(t0, fpu_fcr31, get_fp_bit(cc));
int l1 = gen_new_label(); tcg_gen_not_i32(t0, t0);
int l2 = gen_new_label(); tcg_gen_andi_i32(t0, t0, 1);
tcg_gen_extu_i32_tl(bcond, t0);
get_fp_cond(t0);
tcg_gen_andi_i32(t0, t0, 0x1 << cc);
tcg_gen_brcondi_i32(TCG_COND_EQ, t0, 0, l1);
tcg_gen_movi_tl(bcond, 0);
tcg_gen_br(l2);
gen_set_label(l1);
tcg_gen_movi_tl(bcond, 1);
gen_set_label(l2);
}
opn = "bc1fl"; opn = "bc1fl";
goto likely; goto likely;
case OPC_BC1T: case OPC_BC1T:
{ tcg_gen_shri_i32(t0, fpu_fcr31, get_fp_bit(cc));
int l1 = gen_new_label(); tcg_gen_andi_i32(t0, t0, 1);
int l2 = gen_new_label(); tcg_gen_extu_i32_tl(bcond, t0);
get_fp_cond(t0);
tcg_gen_andi_i32(t0, t0, 0x1 << cc);
tcg_gen_brcondi_i32(TCG_COND_NE, t0, 0, l1);
tcg_gen_movi_tl(bcond, 0);
tcg_gen_br(l2);
gen_set_label(l1);
tcg_gen_movi_tl(bcond, 1);
gen_set_label(l2);
}
opn = "bc1t"; opn = "bc1t";
goto not_likely; goto not_likely;
case OPC_BC1TL: case OPC_BC1TL:
{ tcg_gen_shri_i32(t0, fpu_fcr31, get_fp_bit(cc));
int l1 = gen_new_label(); tcg_gen_andi_i32(t0, t0, 1);
int l2 = gen_new_label(); tcg_gen_extu_i32_tl(bcond, t0);
get_fp_cond(t0);
tcg_gen_andi_i32(t0, t0, 0x1 << cc);
tcg_gen_brcondi_i32(TCG_COND_NE, t0, 0, l1);
tcg_gen_movi_tl(bcond, 0);
tcg_gen_br(l2);
gen_set_label(l1);
tcg_gen_movi_tl(bcond, 1);
gen_set_label(l2);
}
opn = "bc1tl"; opn = "bc1tl";
likely: likely:
ctx->hflags |= MIPS_HFLAG_BL; ctx->hflags |= MIPS_HFLAG_BL;
break; break;
case OPC_BC1FANY2: case OPC_BC1FANY2:
{ {
int l1 = gen_new_label(); TCGv_i32 t1 = tcg_temp_new_i32();
int l2 = gen_new_label(); tcg_gen_shri_i32(t0, fpu_fcr31, get_fp_bit(cc));
tcg_gen_shri_i32(t1, fpu_fcr31, get_fp_bit(cc+1));
get_fp_cond(t0); tcg_gen_or_i32(t0, t0, t1);
tcg_gen_andi_i32(t0, t0, 0x3 << cc); tcg_temp_free_i32(t1);
tcg_gen_brcondi_i32(TCG_COND_EQ, t0, 0, l1); tcg_gen_not_i32(t0, t0);
tcg_gen_movi_tl(bcond, 0); tcg_gen_andi_i32(t0, t0, 1);
tcg_gen_br(l2); tcg_gen_extu_i32_tl(bcond, t0);
gen_set_label(l1);
tcg_gen_movi_tl(bcond, 1);
gen_set_label(l2);
} }
opn = "bc1any2f"; opn = "bc1any2f";
goto not_likely; goto not_likely;
case OPC_BC1TANY2: case OPC_BC1TANY2:
{ {
int l1 = gen_new_label(); TCGv_i32 t1 = tcg_temp_new_i32();
int l2 = gen_new_label(); tcg_gen_shri_i32(t0, fpu_fcr31, get_fp_bit(cc));
tcg_gen_shri_i32(t1, fpu_fcr31, get_fp_bit(cc+1));
get_fp_cond(t0); tcg_gen_or_i32(t0, t0, t1);
tcg_gen_andi_i32(t0, t0, 0x3 << cc); tcg_temp_free_i32(t1);
tcg_gen_brcondi_i32(TCG_COND_NE, t0, 0, l1); tcg_gen_andi_i32(t0, t0, 1);
tcg_gen_movi_tl(bcond, 0); tcg_gen_extu_i32_tl(bcond, t0);
tcg_gen_br(l2);
gen_set_label(l1);
tcg_gen_movi_tl(bcond, 1);
gen_set_label(l2);
} }
opn = "bc1any2t"; opn = "bc1any2t";
goto not_likely; goto not_likely;
case OPC_BC1FANY4: case OPC_BC1FANY4:
{ {
int l1 = gen_new_label(); TCGv_i32 t1 = tcg_temp_new_i32();
int l2 = gen_new_label(); tcg_gen_shri_i32(t0, fpu_fcr31, get_fp_bit(cc));
tcg_gen_shri_i32(t1, fpu_fcr31, get_fp_bit(cc+1));
get_fp_cond(t0); tcg_gen_or_i32(t0, t0, t1);
tcg_gen_andi_i32(t0, t0, 0xf << cc); tcg_gen_shri_i32(t1, fpu_fcr31, get_fp_bit(cc+2));
tcg_gen_brcondi_i32(TCG_COND_EQ, t0, 0, l1); tcg_gen_or_i32(t0, t0, t1);
tcg_gen_movi_tl(bcond, 0); tcg_gen_shri_i32(t1, fpu_fcr31, get_fp_bit(cc+3));
tcg_gen_br(l2); tcg_gen_or_i32(t0, t0, t1);
gen_set_label(l1); tcg_temp_free_i32(t1);
tcg_gen_movi_tl(bcond, 1); tcg_gen_not_i32(t0, t0);
gen_set_label(l2); tcg_gen_andi_i32(t0, t0, 1);
tcg_gen_extu_i32_tl(bcond, t0);
} }
opn = "bc1any4f"; opn = "bc1any4f";
goto not_likely; goto not_likely;
case OPC_BC1TANY4: case OPC_BC1TANY4:
{ {
int l1 = gen_new_label(); TCGv_i32 t1 = tcg_temp_new_i32();
int l2 = gen_new_label(); tcg_gen_shri_i32(t0, fpu_fcr31, get_fp_bit(cc));
tcg_gen_shri_i32(t1, fpu_fcr31, get_fp_bit(cc+1));
get_fp_cond(t0); tcg_gen_or_i32(t0, t0, t1);
tcg_gen_andi_i32(t0, t0, 0xf << cc); tcg_gen_shri_i32(t1, fpu_fcr31, get_fp_bit(cc+2));
tcg_gen_brcondi_i32(TCG_COND_NE, t0, 0, l1); tcg_gen_or_i32(t0, t0, t1);
tcg_gen_movi_tl(bcond, 0); tcg_gen_shri_i32(t1, fpu_fcr31, get_fp_bit(cc+3));
tcg_gen_br(l2); tcg_gen_or_i32(t0, t0, t1);
gen_set_label(l1); tcg_temp_free_i32(t1);
tcg_gen_movi_tl(bcond, 1); tcg_gen_andi_i32(t0, t0, 1);
gen_set_label(l2); tcg_gen_extu_i32_tl(bcond, t0);
} }
opn = "bc1any4t"; opn = "bc1any4t";
not_likely: not_likely: