predicates.md (shift_amount_operand): Remove constant range check.

2011-10-07  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/arm/predicates.md (shift_amount_operand): Remove constant
	range check.
	(shift_operator): Check range of constants for all shift operators.

	gcc/testsuite/
	* gcc.dg/pr50193-1.c: New file.
	* gcc.target/arm/shiftable.c: New file.

From-SVN: r179662

gcc/testsuite/gcc.dg/pr50193-1.c

+/* PR 50193: ARM: ICE on a | (b << negative-constant) */
+/* Ensure that the compiler doesn't ICE.  */
+
+/* { dg-options "-O2" } */
+
+int
+foo(int a, int b)
+{
+  return a | (b << -3); /* { dg-warning "left shift count is negative" } */
+}

gcc/testsuite/gcc.target/arm/shiftable.c

+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+/* { dg-require-effective-target arm32 } */
+
+/* ARM has shift-and-alu insns.  Depending on the ALU op GCC represents some
+   of these as a left shift, others as a multiply.  Check that we match the
+    right one.  */
+
+int
+plus (int a, int b)
+{
+  return (a * 64) + b;
+}
+
+/* { dg-final { scan-assembler "add.*\[al]sl #6" } } */
+
+int
+minus (int a, int b)
+{
+  return a - (b * 64);
+}
+
+/* { dg-final { scan-assembler "sub.*\[al]sl #6" } } */
+
+int
+ior (int a, int b)
+{
+  return (a * 64) | b;
+}
+
+/* { dg-final { scan-assembler "orr.*\[al]sl #6" } } */
+
+int
+xor (int a, int b)
+{
+  return (a * 64) ^ b;
+}
+
+/* { dg-final { scan-assembler "eor.*\[al]sl #6" } } */
+
+int
+and (int a, int b)
+{
+  return (a * 64) & b;
+}
+
+/* { dg-final { scan-assembler "and.*\[al]sl #6" } } */
+
+int
+rsb (int a, int b)
+{
+  return (a * 64) - b;
+}
+
+/* { dg-final { scan-assembler "rsb.*\[al]sl #6" } } */
+
+int
+mvn (int a, int b)
+{
+  return ~(a * 64);
+}
+
+/* { dg-final { scan-assembler "mvn.*\[al]sl #6" } } */