Add inline functions for various bitwise operations.

[thirdparty/gcc.git] / gcc / rtlanal.c

diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 69bc4fdd5e1e3ee289718cd49c05f8eed45058ac..470c143fcf2b02df3d016c394d636201ba3f82fc 100644 (file)
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -4483,8 +4483,8 @@ nonzero_bits1 (const_rtx x, machine_mode mode, const_rtx known_x,
        int sign_index = GET_MODE_PRECISION (GET_MODE (x)) - 1;
        int width0 = floor_log2 (nz0) + 1;
        int width1 = floor_log2 (nz1) + 1;
-       int low0 = floor_log2 (nz0 & -nz0);
-       int low1 = floor_log2 (nz1 & -nz1);
+       int low0 = ctz_or_zero (nz0);
+       int low1 = ctz_or_zero (nz1);
        unsigned HOST_WIDE_INT op0_maybe_minusp
          = nz0 & (HOST_WIDE_INT_1U << sign_index);
        unsigned HOST_WIDE_INT op1_maybe_minusp