diff options
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/tcg-op.c | 28 | ||||
| -rw-r--r-- | tcg/tcg-op.h | 4 | ||||
| -rw-r--r-- | tcg/tcg-runtime.h | 2 |
3 files changed, 34 insertions, 0 deletions
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c index 2b520c1953..620e26897f 100644 --- a/tcg/tcg-op.c +++ b/tcg/tcg-op.c @@ -536,6 +536,20 @@ void tcg_gen_ctzi_i32(TCGv_i32 ret, TCGv_i32 arg1, uint32_t arg2) tcg_temp_free_i32(t); } +void tcg_gen_clrsb_i32(TCGv_i32 ret, TCGv_i32 arg) +{ + if (TCG_TARGET_HAS_clz_i32) { + TCGv_i32 t = tcg_temp_new_i32(); + tcg_gen_sari_i32(t, arg, 31); + tcg_gen_xor_i32(t, t, arg); + tcg_gen_clzi_i32(t, t, 32); + tcg_gen_subi_i32(ret, t, 1); + tcg_temp_free_i32(t); + } else { + gen_helper_clrsb_i32(ret, arg); + } +} + void tcg_gen_rotl_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2) { if (TCG_TARGET_HAS_rot_i32) { @@ -1846,6 +1860,20 @@ void tcg_gen_ctzi_i64(TCGv_i64 ret, TCGv_i64 arg1, uint64_t arg2) } } +void tcg_gen_clrsb_i64(TCGv_i64 ret, TCGv_i64 arg) +{ + if (TCG_TARGET_HAS_clz_i64 || TCG_TARGET_HAS_clz_i32) { + TCGv_i64 t = tcg_temp_new_i64(); + tcg_gen_sari_i64(t, arg, 63); + tcg_gen_xor_i64(t, t, arg); + tcg_gen_clzi_i64(t, t, 64); + tcg_gen_subi_i64(ret, t, 1); + tcg_temp_free_i64(t); + } else { + gen_helper_clrsb_i64(ret, arg); + } +} + void tcg_gen_rotl_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2) { if (TCG_TARGET_HAS_rot_i64) { diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index 7a24e84386..c2f3db9288 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -290,6 +290,7 @@ void tcg_gen_clz_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2); void tcg_gen_ctz_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2); void tcg_gen_clzi_i32(TCGv_i32 ret, TCGv_i32 arg1, uint32_t arg2); void tcg_gen_ctzi_i32(TCGv_i32 ret, TCGv_i32 arg1, uint32_t arg2); +void tcg_gen_clrsb_i32(TCGv_i32 ret, TCGv_i32 arg); void tcg_gen_rotl_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2); void tcg_gen_rotli_i32(TCGv_i32 ret, TCGv_i32 arg1, unsigned arg2); void tcg_gen_rotr_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2); @@ -477,6 +478,7 @@ void tcg_gen_clz_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2); void tcg_gen_ctz_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2); void tcg_gen_clzi_i64(TCGv_i64 ret, TCGv_i64 arg1, uint64_t arg2); void tcg_gen_ctzi_i64(TCGv_i64 ret, TCGv_i64 arg1, uint64_t arg2); +void tcg_gen_clrsb_i64(TCGv_i64 ret, TCGv_i64 arg); void tcg_gen_rotl_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2); void tcg_gen_rotli_i64(TCGv_i64 ret, TCGv_i64 arg1, unsigned arg2); void tcg_gen_rotr_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2); @@ -970,6 +972,7 @@ void tcg_gen_atomic_xor_fetch_i64(TCGv_i64, TCGv, TCGv_i64, TCGArg, TCGMemOp); #define tcg_gen_ctz_tl tcg_gen_ctz_i64 #define tcg_gen_clzi_tl tcg_gen_clzi_i64 #define tcg_gen_ctzi_tl tcg_gen_ctzi_i64 +#define tcg_gen_clrsb_tl tcg_gen_clrsb_i64 #define tcg_gen_rotl_tl tcg_gen_rotl_i64 #define tcg_gen_rotli_tl tcg_gen_rotli_i64 #define tcg_gen_rotr_tl tcg_gen_rotr_i64 @@ -1065,6 +1068,7 @@ void tcg_gen_atomic_xor_fetch_i64(TCGv_i64, TCGv, TCGv_i64, TCGArg, TCGMemOp); #define tcg_gen_ctz_tl tcg_gen_ctz_i32 #define tcg_gen_clzi_tl tcg_gen_clzi_i32 #define tcg_gen_ctzi_tl tcg_gen_ctzi_i32 +#define tcg_gen_clrsb_tl tcg_gen_clrsb_i32 #define tcg_gen_rotl_tl tcg_gen_rotl_i32 #define tcg_gen_rotli_tl tcg_gen_rotli_i32 #define tcg_gen_rotr_tl tcg_gen_rotr_i32 diff --git a/tcg/tcg-runtime.h b/tcg/tcg-runtime.h index eb1cd761b7..0d30f1a90c 100644 --- a/tcg/tcg-runtime.h +++ b/tcg/tcg-runtime.h @@ -19,6 +19,8 @@ DEF_HELPER_FLAGS_2(clz_i32, TCG_CALL_NO_RWG_SE, i32, i32, i32) DEF_HELPER_FLAGS_2(ctz_i32, TCG_CALL_NO_RWG_SE, i32, i32, i32) DEF_HELPER_FLAGS_2(clz_i64, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(ctz_i64, TCG_CALL_NO_RWG_SE, i64, i64, i64) +DEF_HELPER_FLAGS_1(clrsb_i32, TCG_CALL_NO_RWG_SE, i32, i32) +DEF_HELPER_FLAGS_1(clrsb_i64, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_1(exit_atomic, TCG_CALL_NO_WG, noreturn, env) |