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cc81d3493e
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14554 3c298f89-4303-0410-b956-a3cf2f4a3e73
15 lines
466 B
Diff
15 lines
466 B
Diff
--- a/gcc/fold-const.c
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+++ b/gcc/fold-const.c
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@@ -5339,7 +5339,10 @@ extract_muldiv_1 (tree t, tree c, enum t
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}
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break;
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}
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- /* FALLTHROUGH */
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+ /* If the constant is negative, we cannot simplify this. */
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+ if (tree_int_cst_sgn (c) == -1)
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+ break;
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+ /* FALLTHROUGH */
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case NEGATE_EXPR:
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if ((t1 = extract_muldiv (op0, c, code, wide_type)) != 0)
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return fold_build1 (tcode, ctype, fold_convert (ctype, t1));
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