diff options
| author | Richard Henderson <rth@twiddle.net> | 2014-01-27 21:49:17 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2014-02-17 10:12:29 -0600 |
| commit | 9d2eec202fad72ce05ee8d54dc5a6fb6dcb87776 (patch) | |
| tree | e7b9979547acc0c3b4ef5855d1c9783674674046 /tcg/i386/tcg-target.h | |
| parent | ecc7e84327c1c8e9b006edfaa5d0e3baf35a3f99 (diff) | |
| download | qemu-9d2eec202fad72ce05ee8d54dc5a6fb6dcb87776.zip | |
tcg/i386: Use ANDN instruction
Note that the optimizer cannot simplify ANDC X,Y,C to AND X,Y,~C
so we must handle constants in the implementation of andc.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/i386/tcg-target.h')
| -rw-r--r-- | tcg/i386/tcg-target.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h index 747b797315..bdf2222452 100644 --- a/tcg/i386/tcg-target.h +++ b/tcg/i386/tcg-target.h @@ -73,6 +73,8 @@ typedef enum { #define TCG_TARGET_CALL_STACK_OFFSET 0 #endif +extern bool have_bmi1; + /* optional instructions */ #define TCG_TARGET_HAS_div2_i32 1 #define TCG_TARGET_HAS_rot_i32 1 @@ -84,7 +86,7 @@ typedef enum { #define TCG_TARGET_HAS_bswap32_i32 1 #define TCG_TARGET_HAS_neg_i32 1 #define TCG_TARGET_HAS_not_i32 1 -#define TCG_TARGET_HAS_andc_i32 0 +#define TCG_TARGET_HAS_andc_i32 have_bmi1 #define TCG_TARGET_HAS_orc_i32 0 #define TCG_TARGET_HAS_eqv_i32 0 #define TCG_TARGET_HAS_nand_i32 0 @@ -112,7 +114,7 @@ typedef enum { #define TCG_TARGET_HAS_bswap64_i64 1 #define TCG_TARGET_HAS_neg_i64 1 #define TCG_TARGET_HAS_not_i64 1 -#define TCG_TARGET_HAS_andc_i64 0 +#define TCG_TARGET_HAS_andc_i64 have_bmi1 #define TCG_TARGET_HAS_orc_i64 0 #define TCG_TARGET_HAS_eqv_i64 0 #define TCG_TARGET_HAS_nand_i64 0 |