re PR testsuite/36332 (FAIL: gcc.dg/torture/type-generic-1.c execution test on powerpc-*)

PR target/36332
	* real.c (real_maxval): Clear a lower bit to make real_maxval
	match get_max_float for IBM long double format.

	* gcc.c-torture/execute/ieee/pr36332.c: New test.

From-SVN: r139906

gcc/ChangeLog

@@ -1,3 +1,9 @@
+2008-09-02  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/36332
+	* real.c (real_maxval): Clear a lower bit to make real_maxval
+	match get_max_float for IBM long double format.
+
 2008-09-02  Andreas Schwab  <schwab@suse.de>
 
 	* configure.ac: Use m4_quote to quote the expansion of m4_do.

gcc/real.c

@@ -2417,7 +2417,7 @@ real_maxval (REAL_VALUE_TYPE *r, int sign, enum machine_mode mode)
 	   required to be the value of the long double rounded to the
 	   nearest double.  Rounding means we need a slightly smaller
 	   value for LDBL_MAX.  */
-        clear_significand_bit (r, SIGNIFICAND_BITS - fmt->pnan);
+	clear_significand_bit (r, SIGNIFICAND_BITS - fmt->pnan - 1);
     }
 }
 

gcc/testsuite/ChangeLog

@@ -1,5 +1,8 @@
 2008-09-02  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/36332
+	* gcc.c-torture/execute/ieee/pr36332.c: New test.
+
 	PR c/37171
 	* g++.dg/ext/attrib34.C: New test.
 

gcc/testsuite/gcc.c-torture/execute/ieee/pr36332.c

@@ -0,0 +1,15 @@
+/* PR target/36332 */
+
+int __attribute__((noinline, used))
+foo (long double ld)
+{
+  return ld == __builtin_infl ();
+}
+
+int
+main ()
+{
+  if (foo (__LDBL_MAX__))
+    __builtin_abort ();
+  return 0;
+}