re PR target/20650 (float.c fails to build with weird error message)

	PR 20650
	* config/rs6000/rs6000.md (fix_truncdfsi2): Make destination
	a register.

From-SVN: r97435

gcc/ChangeLog

 2005-04-02  Geoffrey Keating  <geoffk@apple.com>
 
+	PR 20650
+	* config/rs6000/rs6000.md (fix_truncdfsi2): Make destination
+	a register.
+
 	* config/rs6000/t-darwin (TARGET_LIBGCC2_CFLAGS): Add -pipe.
 	* config/t-darwin (TARGET_LIBGCC2_CFLAGS): Likewise.
 

gcc/config/rs6000/rs6000.md

@@ -5272,8 +5272,10 @@
   DONE;
 }")
 
+; In the TARGET_PPC_GFXOPT case, this could and probably should
+; take a memory destination; but actually making this work is hard.
 (define_expand "fix_truncdfsi2"
-  [(parallel [(set (match_operand:SI 0 "reg_or_mem_operand" "")
+  [(parallel [(set (match_operand:SI 0 "gpc_reg_operand" "")
 		   (fix:SI (match_operand:DF 1 "gpc_reg_operand" "")))
 	      (clobber (match_dup 2))
 	      (clobber (match_dup 3))])]

gcc/testsuite/ChangeLog

+2005-04-02  Geoffrey Keating  <geoffk@apple.com>
+
+	* gcc.dg/rs6000-fpint.c: New.
+
 2005-04-01  Joseph S. Myers  <joseph@codesourcery.com>
 
 	* gcc.dg/old-style-then-proto-1.c: New test.

gcc/testsuite/gcc.dg/rs6000-fpint.c

+/* { dg-do compile { target powerpc*-*-* rs6000-*-* } } */
+/* { dg-options "-mno-powerpc-gfxopt" } */
+/* { dg-final { scan-assembler-not "stfiwx" } } */
+
+/* A basic test of the old-style (not stfiwx) fp -> int conversion.  */
+int f(double a, double b)
+{
+  int a1 = a;
+  int b1 = b;
+  return a1+b1;
+}