re PR target/34831 (ICE on gcc.dg/pr34233.c for MIPS)

gcc/
	PR target/34831
	* config/mips/mips.md (div<mode>3): Use <recip_condition> when
	deciding whether to use reciprocal instructions.

gcc/testsuite/
	PR target/34831
	* gcc.target/mips/pr34831.c: New test.

From-SVN: r131662

gcc/ChangeLog

+2008-01-20  Richard Sandiford  <rsandifo@nildram.co.uk>
+
+	PR target/34831
+	* config/mips/mips.md (div<mode>3): Use <recip_condition> when
+	deciding whether to use reciprocal instructions.
+
 2008-01-19  Uros Bizjak  <ubizjak@gmail.com>
 
 	* dwarf2out.c (dwarf2out_switch_text_section): Do not call

gcc/config/mips/mips.md

@@ -1936,7 +1936,7 @@
   "<divide_condition>"
 {
   if (const_1_operand (operands[1], <MODE>mode))
-    if (!(ISA_HAS_FP4 && flag_unsafe_math_optimizations))
+    if (!(<recip_condition> && flag_unsafe_math_optimizations))
       operands[1] = force_reg (<MODE>mode, operands[1]);
 })
 

gcc/testsuite/ChangeLog

+2008-01-20  Richard Sandiford  <rsandifo@nildram.co.uk>
+
+	PR target/34831
+	* gcc.target/mips/pr34831.c: New test.
+
 2008-01-19  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/34817

gcc/testsuite/gcc.target/mips/pr34831.c

+/* { dg-mips-options "-ffast-math -mips64 -mgp32" } */
+
+double
+foo (void)
+{
+  return __builtin_pow (0.0, -1.5);
+}