* emit-rtl.c (immed_double_const): Cleanup.

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

diff --git a/gcc/combine.c b/gcc/combine.c
index d4ea689..9240b32 100644 (file)
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -6249,6 +6249,9 @@ make_extraction (enum machine_mode mode, rtx inner, HOST_WIDE_INT pos,
              || orig_pos + len > GET_MODE_BITSIZE (wanted_inner_mode)))
        return 0;
 
+      if (orig_pos < 0)
+       return 0;
+
       inner = force_to_mode (inner, wanted_inner_mode,
                             pos_rtx
                             || len + orig_pos >= HOST_BITS_PER_WIDE_INT
@@ -8734,7 +8737,8 @@ simplify_shift_const_1 (enum rtx_code code, enum machine_mode result_mode,
              && INTVAL (XEXP (varop, 1)) >= 0
              && INTVAL (XEXP (varop, 1)) < GET_MODE_BITSIZE (GET_MODE (varop))
              && GET_MODE_BITSIZE (result_mode) <= HOST_BITS_PER_WIDE_INT
-             && GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT)
+             && GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT
+             && !VECTOR_MODE_P (result_mode))
            {
              enum rtx_code first_code = GET_CODE (varop);
              unsigned int first_count = INTVAL (XEXP (varop, 1));