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| author | spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-10-21 23:05:39 +0000 |
|---|---|---|
| committer | spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-10-21 23:05:39 +0000 |
| commit | 8da11536673aba7617a056943f17b857808c32de (patch) | |
| tree | 19f73c5acca1dc29d3476bc353efe3c387d3dae3 /gcc/tree-chrec.h | |
| parent | 8d057f8c0150a739ccf6fd8a8ce21fba794efa1b (diff) | |
| download | gcc-8da11536673aba7617a056943f17b857808c32de.tar.gz | |
PR tree-optimization/41497
* tree-scalar-evolution.c (analyze_evolution_in_loop): Return
chrec_dont_know if the evolution function returned by follow_ssa_edge
is constant in the analyzed loop and is not compatible with the
initial value before the loop.
* tree-chrec.h (no_evolution_in_loop_p): Call STRIP_NOPS.
* gcc.dg/tree-ssa/pr41497.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@153441 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-chrec.h')
| -rw-r--r-- | gcc/tree-chrec.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/tree-chrec.h b/gcc/tree-chrec.h index f21aa74d795..545db38a730 100644 --- a/gcc/tree-chrec.h +++ b/gcc/tree-chrec.h @@ -115,6 +115,7 @@ no_evolution_in_loop_p (tree chrec, unsigned loop_num, bool *res) || chrec_contains_symbols_defined_in_loop (chrec, loop_num)) return false; + STRIP_NOPS (chrec); scev = hide_evolution_in_other_loops_than_loop (chrec, loop_num); *res = !tree_is_chrec (scev); return true; |