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| author | Roger Sayle <roger@eyesopen.com> | 2003-03-30 23:07:27 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2003-03-30 23:07:27 +0000 |
| commit | 9311f3f613826baba9506671cfd94227108853a9 (patch) | |
| tree | dbb11f2059db5f960133c611cbd811745b901d63 /gcc/dojump.c | |
| parent | c717c5af279f31b4e469f01469d17a7720c56d54 (diff) | |
| download | gcc-9311f3f613826baba9506671cfd94227108853a9.tar.gz | |
* dojump.c (do_jump): Copy SUBREGs into a pseudo for comparison.
From-SVN: r65060
Diffstat (limited to 'gcc/dojump.c')
| -rw-r--r-- | gcc/dojump.c | 13 |
1 files changed, 9 insertions, 4 deletions
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 (); } |