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

tcg: Emit ANDI as EXTU for appropriate constants

Browse Source 
Note that andi_i64 failed to perform even the minimal
optimizations promised by the README.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2012-09-21 17:18:10 -07:00 committed by Aurelien Jarno
parent 5a696f6ac0
commit 42ce3e2015
1 changed files with 55 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
tcg/tcg-op.h
View File

@ -518,18 +518,34 @@ static inline void tcg_gen_and_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2)
}
}
static inline void tcg_gen_andi_i32(TCGv_i32 ret, TCGv_i32 arg1, int32_t arg2)
static inline void tcg_gen_andi_i32(TCGv_i32 ret, TCGv_i32 arg1, uint32_t arg2)
{
/* some cases can be optimized here */
if (arg2 == 0) {
TCGv_i32 t0;
/* Some cases can be optimized here. */
switch (arg2) {
case 0:
tcg_gen_movi_i32(ret, 0);
} else if (arg2 == 0xffffffff) {
return;
case 0xffffffffu:
tcg_gen_mov_i32(ret, arg1);
} else {
TCGv_i32 t0 = tcg_const_i32(arg2);
tcg_gen_and_i32(ret, arg1, t0);
tcg_temp_free_i32(t0);
return;
case 0xffu:
/* Don't recurse with tcg_gen_ext8u_i32. */
if (TCG_TARGET_HAS_ext8u_i32) {
tcg_gen_op2_i32(INDEX_op_ext8u_i32, ret, arg1);
return;
}
break;
case 0xffffu:
if (TCG_TARGET_HAS_ext16u_i32) {
tcg_gen_op2_i32(INDEX_op_ext16u_i32, ret, arg1);
return;
}
break;
}
t0 = tcg_const_i32(arg2);
tcg_gen_and_i32(ret, arg1, t0);
tcg_temp_free_i32(t0);
}
static inline void tcg_gen_or_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2)
@ -1120,9 +1136,38 @@ static inline void tcg_gen_and_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2)
}
}
static inline void tcg_gen_andi_i64(TCGv_i64 ret, TCGv_i64 arg1, int64_t arg2)
static inline void tcg_gen_andi_i64(TCGv_i64 ret, TCGv_i64 arg1, uint64_t arg2)
{
TCGv_i64 t0 = tcg_const_i64(arg2);
TCGv_i64 t0;
/* Some cases can be optimized here. */
switch (arg2) {
case 0:
tcg_gen_movi_i64(ret, 0);
return;
case 0xffffffffffffffffull:
tcg_gen_mov_i64(ret, arg1);
return;
case 0xffull:
/* Don't recurse with tcg_gen_ext8u_i32. */
if (TCG_TARGET_HAS_ext8u_i64) {
tcg_gen_op2_i64(INDEX_op_ext8u_i64, ret, arg1);
return;
}
break;
case 0xffffu:
if (TCG_TARGET_HAS_ext16u_i64) {
tcg_gen_op2_i64(INDEX_op_ext16u_i64, ret, arg1);
return;
}
break;
case 0xffffffffull:
if (TCG_TARGET_HAS_ext32u_i64) {
tcg_gen_op2_i64(INDEX_op_ext32u_i64, ret, arg1);
return;
}
break;
}
t0 = tcg_const_i64(arg2);
tcg_gen_and_i64(ret, arg1, t0);
tcg_temp_free_i64(t0);
}