* combine.c (make_compound_operation): Don't generate zero / sign

	extensions in floating point modes.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@56804 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7f11bb8..682001b 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Wed Sep  4 18:48:10 2002  J"orn Rennecke <joern.rennecke@superh.com>
+
+       * combine.c (make_compound_operation): Don't generate zero / sign
+       extensions in floating point modes.
+
 2002-09-04  Janis Johnson  <janis187@us.ibm.com>
 
        * doc/c-tree.texi: Fix overfull hboxes.

diff --git a/gcc/combine.c b/gcc/combine.c
index 4a2ae3c..10ee904 100644 (file)
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -6629,7 +6629,11 @@ make_compound_operation (x, in_code)
          if (GET_MODE_SIZE (mode) > GET_MODE_SIZE (GET_MODE (tem))
              || (GET_MODE_SIZE (mode) >
                  GET_MODE_SIZE (GET_MODE (XEXP (tem, 0)))))
-           tem = gen_rtx_fmt_e (GET_CODE (tem), mode, XEXP (tem, 0));
+           {
+             if (! INTEGRAL_MODE_P (mode))
+               break;
+             tem = gen_rtx_fmt_e (GET_CODE (tem), mode, XEXP (tem, 0));
+           }
          else
            tem = gen_lowpart_for_combine (mode, XEXP (tem, 0));
          return tem;