Author: pluto Date: Tue May 16 10:23:22 2006 GMT
Module: SOURCES Tag: GCC_4_1
---- Log message:
- critical fix.
---- Files affected:
SOURCES:
gcc-pr27603.patch (NONE -> 1.1.2.1) (NEW)
---- Diffs:
================================================================
Index: SOURCES/gcc-pr27603.patch
diff -u /dev/null SOURCES/gcc-pr27603.patch:1.1.2.1
--- /dev/null Tue May 16 12:23:22 2006
+++ SOURCES/gcc-pr27603.patch Tue May 16 12:23:17 2006
@@ -0,0 +1,28 @@
+--- gcc-4_1-branch/gcc/tree-ssa-loop-niter.c (wersja 113819)
++++ gcc-4_1-branch/gcc/tree-ssa-loop-niter.c (wersja 113820)
+@@ -1562,15 +1562,20 @@
+
+ utype = unsigned_type_for (type);
+ if (tree_int_cst_lt (step, integer_zero_node))
+- diff = fold_build2 (MINUS_EXPR, utype, init,
++ diff = fold_build2 (MINUS_EXPR, type, init,
+ TYPE_MIN_VALUE (type));
+ else
+- diff = fold_build2 (MINUS_EXPR, utype,
++ diff = fold_build2 (MINUS_EXPR, type,
+ TYPE_MAX_VALUE (type), init);
+
+- estimation = fold_build2 (CEIL_DIV_EXPR, utype, diff,
+- step);
+- record_estimate (loop, estimation, boolean_true_node, stmt);
++ if (integer_nonzerop (step))
++ {
++ estimation = fold_build2 (CEIL_DIV_EXPR, type, diff,
++ step);
++ record_estimate (loop,
++ fold_convert (utype, estimation),
++ boolean_true_node, stmt);
++ }
+ }
+
+ break;
================================================================
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