Remove superfluous clobber of cc in arm_emit_call_insn

2014-06-25  Tom de Vries  <tom@codesourcery.com>

	* config/arm/arm.c (arm_emit_call_insn): Remove clobber of CC_REGNUM.

From-SVN: r211990

gcc/ChangeLog

+2014-06-25  Tom de Vries  <tom@codesourcery.com>
+
+	* config/arm/arm.c (arm_emit_call_insn): Remove clobber of CC_REGNUM.
+
 2014-06-25  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	* tree-ssa-forwprop.c (associate_plusminus): For widening conversions

gcc/config/arm/arm.c

@@ -17642,11 +17642,11 @@ arm_emit_call_insn (rtx pat, rtx addr, bool sibcall)
   if (TARGET_AAPCS_BASED)
     {
       /* For AAPCS, IP and CC can be clobbered by veneers inserted by the
-	 linker.  We need to add these to allow setting
-	 TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS to true.  */
+	 linker.  We need to add an IP clobber to allow setting
+	 TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS to true.  A CC clobber
+	 is not needed since it's a fixed register.  */
       rtx *fusage = &CALL_INSN_FUNCTION_USAGE (insn);
       clobber_reg (fusage, gen_rtx_REG (word_mode, IP_REGNUM));
-      clobber_reg (fusage, gen_rtx_REG (word_mode, CC_REGNUM));
     }
 }