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Hello! Current gcc transforms "x >= 0.0 ? x : -x" into fabs(), which is wrong for modes with signed zeros [when x equals -0.0, this code returns -0.0, where fabs() returns 0.0]. Attached patch fixes a couple of places where this wrong transformation is performed, including transforms to ABS_EXPR, MAX_EXPR and MIN_EXPR. 2008-03-04 Uros Bizjak <ubizjak@gmail.com> PR middle-end/35456 * fold-const.c (fold_cond_expr_with_comparison): Prevent transformations for modes that have signed zeros. * ifcvt.c (noce_try_abs): Ditto. 2008-03-04 Uros Bizjak <ubizjak@gmail.com> PR middle-end/35456 * gcc.c-torture/execute/pr35456.c: New test. Patch was bootstrapped and regression tested on i686-pc-linux-gnu. OK for mainline? Uros.
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