12 lines
423 B
Diff
12 lines
423 B
Diff
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--- a/gcc/tree-ssa-loop-ivcanon.c 2018-12-06 05:05:43.841181211 +0800
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+++ b/gcc/tree-ssa-loop-ivcanon.c 2018-12-06 05:03:17.545185153 +0800
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@@ -726,7 +726,7 @@ try_unroll_loop_completely (struct loop
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edge_to_cancel = NULL;
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}
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- if (!n_unroll_found)
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+ if (!n_unroll_found || SCEV_NOT_KNOWN == TREE_CODE (niter))
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return false;
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if (n_unroll > (unsigned) PARAM_VALUE (PARAM_MAX_COMPLETELY_PEEL_TIMES))
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