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[v2,05/10] tcg/optimize: optimize "op r, a, a => mov r, a"

Message ID 1348256598-8146-6-git-send-email-aurelien@aurel32.net
State New
Headers show

Commit Message

Aurelien Jarno Sept. 21, 2012, 7:43 p.m. UTC 
Now that we can easily detect all copies, we can optimize the
"op r, a, a => mov r, a" case a bit more.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 tcg/optimize.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/tcg/optimize.c b/tcg/optimize.c
index aeb2225..b9a7da9 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -524,7 +524,7 @@  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 {