From: Wei Mi <wmi@google.com>
Date: Tue, 2 Apr 2013 16:53:49 +0000 (+0000)
Subject: i386.c (ix86_rtx_costs): Set proper rtx cost for ashl<mode>3_mask...
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7a80735b9353db7d9ad46a1880bfcd3e8efbc427;p=gcc.git

i386.c (ix86_rtx_costs): Set proper rtx cost for ashl<mode>3_mask...

2013-04-02  Wei Mi  <wmi@google.com>

	* config/i386/i386.c (ix86_rtx_costs): Set proper rtx cost for
	ashl<mode>3_mask, *<shift_insn><mode>3_mask and
	*<rotate_insn><mode>3_mask in i386.md.

From-SVN: r197362
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0e1d5e470b9..3ac917a99e3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2013-04-02  Wei Mi  <wmi@google.com>
+
+	* config/i386/i386.c (ix86_rtx_costs): Set proper rtx cost for
+	ashl<mode>3_mask, *<shift_insn><mode>3_mask and
+	*<rotate_insn><mode>3_mask in i386.md.
+
 2013-04-02  Alexander Ivchenko  <alexander.ivchenko@intel.com>
 
 	* config.gcc (arm*-*-linux-*): Remove duplicate t-linux-android.
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 8e9d38f8887..71218a0f528 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -34174,6 +34174,13 @@ ix86_rtx_costs (rtx x, int code_i, int outer_code_i, int opno, int *total,
 	{
 	  if (CONST_INT_P (XEXP (x, 1)))
 	    *total = cost->shift_const;
+	  else if (GET_CODE (XEXP (x, 1)) == SUBREG
+		   && GET_CODE (XEXP (XEXP (x, 1), 0)) == AND)
+	    {
+	      /* Return the cost after shift-and truncation.  */
+	      *total = cost->shift_var;
+	      return true;
+	    }
 	  else
 	    *total = cost->shift_var;
 	}