* tree-iterator.c (EXPR_LAST_BODY): Remove.

[pf3gnuchains/gcc-fork.git] / gcc / cse.c

diff --git a/gcc/cse.c b/gcc/cse.c
index 91cb108..04f52fb 100644 (file)
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -3464,6 +3464,7 @@ fold_rtx (rtx x, rtx insn)
              int is_shift
                = (code == ASHIFT || code == ASHIFTRT || code == LSHIFTRT);
              rtx y, inner_const, new_const;
+             rtx canon_const_arg1 = const_arg1;
              enum rtx_code associate_code;
 
              if (is_shift
@@ -3471,8 +3472,9 @@ fold_rtx (rtx x, rtx insn)
                      || INTVAL (const_arg1) < 0))
                {
                  if (SHIFT_COUNT_TRUNCATED)
-                   const_arg1 = GEN_INT (INTVAL (const_arg1)
-                                         & (GET_MODE_BITSIZE (mode) - 1));
+                   canon_const_arg1 = GEN_INT (INTVAL (const_arg1)
+                                               & (GET_MODE_BITSIZE (mode)
+                                                  - 1));
                  else
                    break;
                }
@@ -3531,7 +3533,8 @@ fold_rtx (rtx x, rtx insn)
              associate_code = (is_shift || code == MINUS ? PLUS : code);
 
              new_const = simplify_binary_operation (associate_code, mode,
-                                                    const_arg1, inner_const);
+                                                    canon_const_arg1,
+                                                    inner_const);
 
              if (new_const == 0)
                break;
@@ -4483,7 +4486,8 @@ cse_insn (rtx insn)
          enum machine_mode wider_mode;
 
          for (wider_mode = GET_MODE_WIDER_MODE (mode);
-              GET_MODE_BITSIZE (wider_mode) <= BITS_PER_WORD
+              wider_mode != VOIDmode
+              && GET_MODE_BITSIZE (wider_mode) <= BITS_PER_WORD
               && src_related == 0;
               wider_mode = GET_MODE_WIDER_MODE (wider_mode))
            {