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| author | spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-11-11 19:25:58 +0000 |
|---|---|---|
| committer | spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-11-11 19:25:58 +0000 |
| commit | c44857915cabf9415facd521236faf982c9c0786 (patch) | |
| tree | 4060f2ebeabfe21384f5159ab7564a73587c8cbc /gcc/tree-scalar-evolution.c | |
| parent | 8495accb79374dfe513abfef0d3e79b117fb611d (diff) | |
| download | gcc-c44857915cabf9415facd521236faf982c9c0786.tar.gz | |
* tree-scalar-evolution.c (follow_ssa_edge_in_condition_phi):
Give up as soon as the evolution is known not computable.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@90491 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-scalar-evolution.c')
| -rw-r--r-- | gcc/tree-scalar-evolution.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/tree-scalar-evolution.c b/gcc/tree-scalar-evolution.c index 7d97d92dce2..e26f1da48db 100644 --- a/gcc/tree-scalar-evolution.c +++ b/gcc/tree-scalar-evolution.c @@ -1398,6 +1398,11 @@ follow_ssa_edge_in_condition_phi (struct loop *loop, for (i = 1; i < PHI_NUM_ARGS (condition_phi); i++) { + /* Quickly give up when the evolution of one of the branches is + not known. */ + if (*evolution_of_loop == chrec_dont_know) + return true; + if (!follow_ssa_edge_in_condition_phi_branch (i, loop, condition_phi, halting_phi, &evolution_of_branch, |