Re: [PATCH] Adjust variable shift costs for IA MCU

["H.J. Lu" <hongjiu.lu@intel.com>]

On Thu, Jul 09, 2015 at 11:05:27AM -0700, H.J. Lu wrote:
> We reduce code size for IA MCU by adjusting variable shift costs for IA
> MCU.  OK for trunk?
> 
> Thanks.
> 
> 
> H.J.
> ---
> 	PR target/66821
> 	* config/i386/i386.c (iamcu_cost): Adjust variable shift costs.

I checked in this patch to add a testcase for PR target/66821.


H.J.
---
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 227132)
+++ ChangeLog	(working copy)
@@ -1,5 +1,10 @@
 2015-08-24  H.J. Lu  <hongjiu.lu@intel.com>
 
+	PR target/66821
+	* gcc.target/i386/pr66821.c: New test.
+
+2015-08-24  H.J. Lu  <hongjiu.lu@intel.com>
+
 	PR target/67329
 	* gcc.target/i386/pr67329.c: New test.
 
Index: gcc.target/i386/pr66821.c
===================================================================
--- gcc.target/i386/pr66821.c	(revision 0)
+++ gcc.target/i386/pr66821.c	(working copy)
@@ -0,0 +1,15 @@
+/* { dg-do compile { target ia32 } } */
+/* { dg-options "-O2 -fdump-tree-optimized -mtune=iamcu" } */
+
+void bar (void);
+
+void
+foo (int x)
+{
+  if (x != 2 && x != 3 && x != 10 && x != 11 && x != 17 && x != 18 && x != 23)
+    bar ();
+}
+
+/* Check if the tests have been folded into a bit test.  */
+/* { dg-final { scan-tree-dump "(8784908|0x0*860c0c)" "optimized" } } */
+/* { dg-final { scan-tree-dump "(<<|>>)" "optimized" } } */