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tcg: Implement multiword addition helpers 

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
master
Richard Henderson 2013-02-19 23:51:56 -08:00 committed by Blue Swirl
parent 696a8be6a0
commit f6953a7399
1 changed files with 82 additions and 0 deletions
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82
tcg/tcg-op.h
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@ -2332,6 +2332,44 @@ static inline void tcg_gen_movcond_i64(TCGCond cond, TCGv_i64 ret,
#endif
}
static inline void tcg_gen_add2_i32(TCGv_i32 rl, TCGv_i32 rh, TCGv_i32 al,
TCGv_i32 ah, TCGv_i32 bl, TCGv_i32 bh)
{
if (TCG_TARGET_HAS_add2_i32) {
tcg_gen_op6_i32(INDEX_op_add2_i32, rl, rh, al, ah, bl, bh);
/* Allow the optimizer room to replace add2 with two moves. */
tcg_gen_op0(INDEX_op_nop);
} else {
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
tcg_gen_concat_i32_i64(t0, al, ah);
tcg_gen_concat_i32_i64(t1, bl, bh);
tcg_gen_add_i64(t0, t0, t1);
tcg_gen_extr_i64_i32(rl, rh, t0);
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
}
}
static inline void tcg_gen_sub2_i32(TCGv_i32 rl, TCGv_i32 rh, TCGv_i32 al,
TCGv_i32 ah, TCGv_i32 bl, TCGv_i32 bh)
{
if (TCG_TARGET_HAS_sub2_i32) {
tcg_gen_op6_i32(INDEX_op_sub2_i32, rl, rh, al, ah, bl, bh);
/* Allow the optimizer room to replace sub2 with two moves. */
tcg_gen_op0(INDEX_op_nop);
} else {
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
tcg_gen_concat_i32_i64(t0, al, ah);
tcg_gen_concat_i32_i64(t1, bl, bh);
tcg_gen_sub_i64(t0, t0, t1);
tcg_gen_extr_i64_i32(rl, rh, t0);
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
}
}
static inline void tcg_gen_mulu2_i32(TCGv_i32 rl, TCGv_i32 rh,
TCGv_i32 arg1, TCGv_i32 arg2)
{
@ -2370,6 +2408,46 @@ static inline void tcg_gen_muls2_i32(TCGv_i32 rl, TCGv_i32 rh,
}
}
static inline void tcg_gen_add2_i64(TCGv_i64 rl, TCGv_i64 rh, TCGv_i64 al,
TCGv_i64 ah, TCGv_i64 bl, TCGv_i64 bh)
{
if (TCG_TARGET_HAS_add2_i64) {
tcg_gen_op6_i64(INDEX_op_add2_i64, rl, rh, al, ah, bl, bh);
/* Allow the optimizer room to replace add2 with two moves. */
tcg_gen_op0(INDEX_op_nop);
} else {
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
tcg_gen_add_i64(t0, al, bl);
tcg_gen_setcond_i64(TCG_COND_LTU, t1, t0, al);
tcg_gen_add_i64(rh, ah, bh);
tcg_gen_add_i64(rh, rh, t1);
tcg_gen_mov_i64(rl, t0);
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
}
}
static inline void tcg_gen_sub2_i64(TCGv_i64 rl, TCGv_i64 rh, TCGv_i64 al,
TCGv_i64 ah, TCGv_i64 bl, TCGv_i64 bh)
{
if (TCG_TARGET_HAS_sub2_i64) {
tcg_gen_op6_i64(INDEX_op_sub2_i64, rl, rh, al, ah, bl, bh);
/* Allow the optimizer room to replace sub2 with two moves. */
tcg_gen_op0(INDEX_op_nop);
} else {
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
tcg_gen_sub_i64(t0, al, bl);
tcg_gen_setcond_i64(TCG_COND_LTU, t1, al, bl);
tcg_gen_sub_i64(rh, ah, bh);
tcg_gen_sub_i64(rh, rh, t1);
tcg_gen_mov_i64(rl, t0);
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
}
}
static inline void tcg_gen_mulu2_i64(TCGv_i64 rl, TCGv_i64 rh,
TCGv_i64 arg1, TCGv_i64 arg2)
{
@ -2739,6 +2817,8 @@ static inline void tcg_gen_qemu_st64(TCGv_i64 arg, TCGv addr, int mem_index)
#define tcg_const_tl tcg_const_i64
#define tcg_const_local_tl tcg_const_local_i64
#define tcg_gen_movcond_tl tcg_gen_movcond_i64
#define tcg_gen_add2_tl tcg_gen_add2_i64
#define tcg_gen_sub2_tl tcg_gen_sub2_i64
#define tcg_gen_mulu2_tl tcg_gen_mulu2_i64
#define tcg_gen_muls2_tl tcg_gen_muls2_i64
#else
@ -2814,6 +2894,8 @@ static inline void tcg_gen_qemu_st64(TCGv_i64 arg, TCGv addr, int mem_index)
#define tcg_const_tl tcg_const_i32
#define tcg_const_local_tl tcg_const_local_i32
#define tcg_gen_movcond_tl tcg_gen_movcond_i32
#define tcg_gen_add2_tl tcg_gen_add2_i32
#define tcg_gen_sub2_tl tcg_gen_sub2_i32
#define tcg_gen_mulu2_tl tcg_gen_mulu2_i32
#define tcg_gen_muls2_tl tcg_gen_muls2_i32
#endif