Commit e64e958e authored by Richard Henderson's avatar Richard Henderson
Browse files

tcg/optimize: Optmize ANDC X,Y,Y to MOV X,0 



Like we already do for SUB and XOR.

Reviewed-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: default avatarAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
parent e201b564

tcg/optimize.c

+1 −0
Original line number Diff line number Diff line
@@ -947,6 +947,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, 


        /* Simplify expression for "op r, a, a => movi r, 0" cases */

        switch (op) {

        CASE_OP_32_64(andc):

        CASE_OP_32_64(sub):

        CASE_OP_32_64(xor):

            if (temps_are_copies(args[1], args[2])) {