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| -rw-r--r-- | gcc/ChangeLog | 2 | ||||
| -rw-r--r-- | gcc/loop-iv.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 13aa778..d1ce533 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -4,6 +4,8 @@ (determine_max_iter): Take additional LOOP arg; all callers changed. Lose broken logic dealing with PLUS. Try to limit the upper bound by one using simplifications. + (simplify_using_initial_values): Return if the expression becomes + invalid due to altered regs. 2007-02-23 DJ Delorie <dj@redhat.com> diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c index fb0ec45..21005d3 100644 --- a/gcc/loop-iv.c +++ b/gcc/loop-iv.c @@ -1811,6 +1811,8 @@ simplify_using_initial_values (struct loop *loop, enum rtx_code op, rtx *expr) FREE_REG_SET (altered); return; } + if (for_each_rtx (expr, altered_reg_used, altered)) + return; } if (!single_pred_p (e->src) |