diff options
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/dojump.c | 13 |
2 files changed, 13 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ea9655ae160..a51e1433eda 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2003-03-30 Roger Sayle <roger@eyesopen.com> + + * dojump.c (do_jump): Copy SUBREGs into a pseudo for comparison. + 2003-03-30 DJ Delorie <dj@redhat.com> * profile.c (instrument_edges): Make sure any newly created diff --git a/gcc/dojump.c b/gcc/dojump.c index 14fed968f32..6921d2b72be 100644 --- a/gcc/dojump.c +++ b/gcc/dojump.c @@ -588,10 +588,15 @@ do_jump (exp, if_false_label, if_true_label) /* Note swapping the labels gives us not-equal. */ do_jump_by_parts_equality_rtx (temp, if_true_label, if_false_label); else if (GET_MODE (temp) != VOIDmode) - do_compare_rtx_and_jump (temp, CONST0_RTX (GET_MODE (temp)), - NE, TREE_UNSIGNED (TREE_TYPE (exp)), - GET_MODE (temp), NULL_RTX, - if_false_label, if_true_label); + { + /* The RTL optimizers prefer comparisons against pseudos. */ + if (GET_CODE (temp) == SUBREG) + temp = copy_to_reg (temp); + do_compare_rtx_and_jump (temp, CONST0_RTX (GET_MODE (temp)), + NE, TREE_UNSIGNED (TREE_TYPE (exp)), + GET_MODE (temp), NULL_RTX, + if_false_label, if_true_label); + } else abort (); } |