tcg: add tcg_invert_cond

It is very handy to have a reliable mapping of a condition to its inverse.

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

diff --git a/tcg/tcg.h b/tcg/tcg.h
index 121b17c2b9003ea81ddca90b71f6332ea5dab46c..b218abeaf28b26195da449bd806b5f331e9ef167 100644 (file)
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -205,6 +205,11 @@ typedef enum {
     TCG_COND_GTU,
 } TCGCond;
 
+static inline TCGCond tcg_invert_cond(TCGCond c)
+{
+    return (TCGCond)(c ^ 1);
+}
+
 static inline TCGCond tcg_unsigned_cond(TCGCond c)
 {
     return (c >= TCG_COND_LT && c <= TCG_COND_GT ? c + 4 : c);