Jakub Jelinek writes:
> 2012-05-30 Jakub Jelinek
>
> PR rtl-optimization/53519
> * combine.c (simplify_shift_const_1) : Use constm1_rtx
> instead of GEN_INT (GET_MODE_MASK (mode)) as second operand of XOR.
>
> * gcc.c-torture/compile/pr53519.c: New test.
OK, thanks.
Ri
Hi!
GEN_INT (GET_MODE_MASK (mode)) isn't canonical CONST_INT for mode,
because it is zero extended rather than sign-extended for GET_MODE_BITSIZE
(mode) < HOST_BITS_PER_WIDE_INT modes.
Fixed thusly, bootstrapped/regtested on x86_64-linux and i686-linux,
ok for trunk?
2012-05-30 Jakub Jelinek
