2007-07-09 Thomas Koenig <tkoenig@gcc.gnu.org>

[pf3gnuchains/gcc-fork.git] / gcc / simplify-rtx.c

diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c
index ade3968..9b27bbd 100644 (file)
--- a/gcc/simplify-rtx.c
+++ b/gcc/simplify-rtx.c
@@ -700,10 +700,11 @@ simplify_unary_operation_1 (enum rtx_code code, enum machine_mode mode, rtx op)
       /*  (float_truncate (float x)) is (float x)  */
       if (GET_CODE (op) == FLOAT
          && (flag_unsafe_math_optimizations
-             || ((unsigned)significand_size (GET_MODE (op))
-                 >= (GET_MODE_BITSIZE (GET_MODE (XEXP (op, 0)))
-                     - num_sign_bit_copies (XEXP (op, 0),
-                                            GET_MODE (XEXP (op, 0)))))))
+             || (SCALAR_FLOAT_MODE_P (GET_MODE (op))
+                 && ((unsigned)significand_size (GET_MODE (op))
+                     >= (GET_MODE_BITSIZE (GET_MODE (XEXP (op, 0)))
+                         - num_sign_bit_copies (XEXP (op, 0),
+                                                GET_MODE (XEXP (op, 0))))))))
        return simplify_gen_unary (FLOAT, mode,
                                   XEXP (op, 0),
                                   GET_MODE (XEXP (op, 0)));
@@ -736,6 +737,7 @@ simplify_unary_operation_1 (enum rtx_code code, enum machine_mode mode, rtx op)
           */
       if (GET_CODE (op) == FLOAT_EXTEND
          || (GET_CODE (op) == FLOAT
+             && SCALAR_FLOAT_MODE_P (GET_MODE (op))
              && ((unsigned)significand_size (GET_MODE (op))
                  >= (GET_MODE_BITSIZE (GET_MODE (XEXP (op, 0)))
                      - num_sign_bit_copies (XEXP (op, 0),