tcg: Add tcg_high_cond

The table that was recently added for hppa is generally usable.
And with the renumbering of the TCG_COND constants it's not too
difficult to compute rather than have a table.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/tcg/tcg.h b/tcg/tcg.h
index 75f0239709..562f0adcd4 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -302,16 +302,33 @@ static inline TCGCond tcg_swap_cond(TCGCond c)
     return c & 6 ? (TCGCond)(c ^ 9) : c;
 }
 
+/* Create an "unsigned" version of a "signed" comparison.  */
 static inline TCGCond tcg_unsigned_cond(TCGCond c)
 {
     return c & 2 ? (TCGCond)(c ^ 6) : c;
 }
 
+/* Must a comparison be considered unsigned?  */
 static inline bool is_unsigned_cond(TCGCond c)
 {
     return (c & 4) != 0;
 }
 
+/* Create a "high" version of a double-word comparison.
+   This removes equality from a LTE or GTE comparison.  */
+static inline TCGCond tcg_high_cond(TCGCond c)
+{
+    switch (c) {
+    case TCG_COND_GE:
+    case TCG_COND_LE:
+    case TCG_COND_GEU:
+    case TCG_COND_LEU:
+        return (TCGCond)(c ^ 8);
+    default:
+        return c;
+    }
+}
+
 #define TEMP_VAL_DEAD  0
 #define TEMP_VAL_REG   1
 #define TEMP_VAL_MEM   2