A recent change added UNSPEC to the CCMP patterns to stop combine optimizing the…

A recent change added UNSPEC to the CCMP patterns to stop combine optimizing the immediate in a rare case.

A recent change added UNSPEC to the CCMP patterns to stop combine optimizing
the immediate in a rare case.  This requires a fix to the CCMP cost
calculation as the CCMP instruction with unspec is no longer recognized.
Fix the ccmp_1.c test by adding -ffinite-math-only so FCCMPE is emitted on
relational compares.

2016-01-28  Wilco Dijkstra  <wdijkstr@arm.com>

    gcc/
	* config/aarch64/aarch64.c (aarch64_if_then_else_costs):
	Remove CONST_INT_P check in CCMP cost calculation.

    gcc/testsuite/
	* gcc.target/aarch64/ccmp_1.c: Fix test issue.

From-SVN: r232930

gcc/ChangeLog

 2016-01-28  Wilco Dijkstra  <wdijkstr@arm.com>
 
+	* config/aarch64/aarch64.c (aarch64_if_then_else_costs):
+	Remove CONST_INT_P check in CCMP cost calculation.
+
+2016-01-28  Wilco Dijkstra  <wdijkstr@arm.com>
+
 	* config/aarch64/aarch64.c (generic_vector_cost):
 	Set vec_permute_cost.
 	(cortexa57_vector_cost): Likewise.

gcc/config/aarch64/aarch64.c

@@ -6010,7 +6010,7 @@ aarch64_if_then_else_costs (rtx op0, rtx op1, rtx op2, int *cost, bool speed)
   else if (GET_MODE_CLASS (GET_MODE (inner)) == MODE_CC)
     {
       /* CCMP.  */
-      if ((GET_CODE (op1) == COMPARE) && CONST_INT_P (op2))
+      if (GET_CODE (op1) == COMPARE)
 	{
 	  /* Increase cost of CCMP reg, 0, imm, CC to prefer CMP reg, 0.  */
 	  if (XEXP (op1, 1) == const0_rtx)

gcc/testsuite/ChangeLog

+2016-01-28  Wilco Dijkstra  <wdijkstr@arm.com>
+
+	* gcc.target/aarch64/ccmp_1.c: Fix test issue.
+
 2016-01-28  David Edelsohn  <dje.gcc@gmail.com>
 
 	* gcc.dg/pr65980.c: Skip on AIX.

gcc/testsuite/gcc.target/aarch64/ccmp_1.c

 /* { dg-do compile } */
-/* { dg-options "-O2" } */
+/* { dg-options "-O2 -ffinite-math-only" } */
 
 int
 f1 (int a)