* expmed.c (ceil_log2): Move from here...

	* hwint.c: ... to here for older GCCs...
	* hwint.h: ... and here for newer GCCs.
	* rtl.h (ceil_log2): Remove prototype.

	* tree-phinodes.c: Do not include rtl.h.
	* Makefile.in (tree-phinodes.o): Do not depend on RTL_H.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@188710 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 0 deletions

diff --git a/gcc/hwint.h b/gcc/hwint.h
index 17346392f91..00c9538fb11 100644
--- a/gcc/hwint.h
+++ b/gcc/hwint.h
@@ -185,6 +185,9 @@ extern int exact_log2                  (unsigned HOST_WIDE_INT);
 /* Return floor of log2, with -1 for zero.  */
 extern int floor_log2                  (unsigned HOST_WIDE_INT);
 
+/* Return the smallest n such that 2**n >= X.  */
+extern int ceil_log2			(unsigned HOST_WIDE_INT);
+
 #else /* GCC_VERSION >= 3004 */
 
 /* For convenience, define 0 -> word_size.  */
@@ -235,6 +238,12 @@ floor_log2 (unsigned HOST_WIDE_INT x)
 }
 
 static inline int
+ceil_log2 (unsigned HOST_WIDE_INT x)
+{
+  return floor_log2 (x - 1) + 1;
+}
+
+static inline int
 exact_log2 (unsigned HOST_WIDE_INT x)
 {
   return x == (x & -x) && x ? ctz_hwi (x) : -1;