Patchwork [v2,4/9] tcg/optimize: simplify and r, a, 0 cases

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Submitter Aurelien Jarno
Date Sept. 7, 2012, 1:16 p.m.
Message ID <1347023792-24045-5-git-send-email-aurelien@aurel32.net>
Download mbox | patch
Permalink /patch/182369/
State New
Headers show

Comments

Aurelien Jarno - Sept. 7, 2012, 1:16 p.m.
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 |    1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/tcg/optimize.c b/tcg/optimize.c
index 0db849e..c12cb2b 100644
--- 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)) {