re PR rtl-optimization/87918 (ICE in simplify_binary_operation, at…

re PR rtl-optimization/87918 (ICE in simplify_binary_operation, at simplify-rtx.c:2153 since r264688)

	PR rtl-optimization/87918
	* simplify-rtx.c (simplify_merge_mask): For COMPARISON_P, use
	simplify_gen_relational rather than simplify_gen_binary.

	* gcc.target/i386/pr87918.c: New test.

From-SVN: r266062

gcc/ChangeLog

+2018-11-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/87918
+	* simplify-rtx.c (simplify_merge_mask): For COMPARISON_P, use
+	simplify_gen_relational rather than simplify_gen_binary.
+
 2018-11-13  Richard Biener  <rguenther@suse.de>
 
 	* tree-ssanames.h (set_range_info): Use value_range_base.

gcc/simplify-rtx.c

@@ -5647,10 +5647,20 @@ simplify_merge_mask (rtx x, rtx mask, int op)
       rtx top0 = simplify_merge_mask (XEXP (x, 0), mask, op);
       rtx top1 = simplify_merge_mask (XEXP (x, 1), mask, op);
       if (top0 || top1)
+	{
+	  if (COMPARISON_P (x))
+	    return simplify_gen_relational (GET_CODE (x), GET_MODE (x),
+					    GET_MODE (XEXP (x, 0)) != VOIDmode
+					    ? GET_MODE (XEXP (x, 0))
+					    : GET_MODE (XEXP (x, 1)),
+					    top0 ? top0 : XEXP (x, 0),
+					    top1 ? top1 : XEXP (x, 1));
+	  else
 	    return simplify_gen_binary (GET_CODE (x), GET_MODE (x),
 					top0 ? top0 : XEXP (x, 0),
 					top1 ? top1 : XEXP (x, 1));
 	}
+    }
   if (GET_RTX_CLASS (GET_CODE (x)) == RTX_TERNARY
       && VECTOR_MODE_P (GET_MODE (XEXP (x, 0)))
       && known_eq (GET_MODE_NUNITS (GET_MODE (XEXP (x, 0))), nunits)

gcc/testsuite/ChangeLog

+2018-11-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/87918
+	* gcc.target/i386/pr87918.c: New test.
+
 2018-11-13  Alan Modra  <amodra@gmail.com>
 
 	* gcc.target/powerpc/rotmask.c: New.

gcc/testsuite/gcc.target/i386/pr87918.c

+/* PR rtl-optimization/87918 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -msse2" } */
+
+#include <x86intrin.h>
+
+__m128 b, c, d;
+
+void
+foo (float f)
+{
+  c = _mm_set_ss (f);
+  d = _mm_cmple_ss (c, b);
+}