From patchwork Wed Sep 19 20:00:19 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [5/9] tcg/optimize: optimize "op r, a, a => mov r, a" Date: Wed, 19 Sep 2012 10:00:19 -0000 From: Aurelien Jarno X-Patchwork-Id: 185211 Message-Id: <1348084823-18277-6-git-send-email-aurelien@aurel32.net> To: qemu-devel@nongnu.org Cc: Aurelien Jarno Now that we can easily detect all copies, we can optimize the "op r, a, a => mov r, a" case a bit more. Signed-off-by: Aurelien Jarno Reviewed-by: Richard Henderson --- tcg/optimize.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index a58de3b..cfee690 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -503,7 +503,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, switch (op) { CASE_OP_32_64(or): CASE_OP_32_64(and): - if (args[1] == args[2]) { + if (temps_are_copies(args[1], args[2])) { if (temps_are_copies(args[0], args[1])) { gen_opc_buf[op_index] = INDEX_op_nop; } else {