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tcg/optimize: simplify and r, a, 0 cases
author
Aurelien Jarno
<aurelien@aurel32.net>
Thu, 6 Sep 2012 14:47:14 +0000
(16:47 +0200)
committer
Aurelien Jarno
<aurelien@aurel32.net>
Tue, 11 Sep 2012 16:05:57 +0000
(18:05 +0200)
and r, a, 0 is equivalent to a movi r, 0.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
tcg/optimize.c
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diff --git
a/tcg/optimize.c
b/tcg/optimize.c
index
0db849e
..
c12cb2b
100644
(file)
--- a/
tcg/optimize.c
+++ b/
tcg/optimize.c
@@
-360,6
+360,7
@@
static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
/* Simplify expression for "op r, a, 0 => movi r, 0" cases */
switch (op) {
+ CASE_OP_32_64(and):
CASE_OP_32_64(mul):
if ((temps[args[2]].state == TCG_TEMP_CONST
&& temps[args[2]].val == 0)) {