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| author | bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-02-24 16:30:51 +0000 |
|---|---|---|
| committer | bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-02-24 16:30:51 +0000 |
| commit | 1887df24fa0c3bdccfbfda205ce690ca698f4881 (patch) | |
| tree | 36940c182974581864c1793a3e83e3a5520eaab0 | |
| parent | 5804b39ebca0eb1585104b1616513a80afc3a85c (diff) | |
| download | ppe42-gcc-1887df24fa0c3bdccfbfda205ce690ca698f4881.tar.gz ppe42-gcc-1887df24fa0c3bdccfbfda205ce690ca698f4881.zip | |
* loop-iv.c (simplify_using_initial_values): Return if the
expression becomes invalid due to altered regs.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@122291 138bc75d-0d04-0410-961f-82ee72b054a4
| -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 13aa77851de..d1ce533a02c 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 fb0ec4525cc..21005d3ff51 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) |
