From 1358cdc5fe7e86cce784dfc28d89e6c8ae2ac5c0 Mon Sep 17 00:00:00 2001 From: Richard Kenner Date: Wed, 1 Oct 2003 20:48:57 +0000 Subject: [PATCH] fold-const.c (make_range): When handling unsigned, don't reverse range if high bound is zero. * fold-const.c (make_range): When handling unsigned, don't reverse range if high bound is zero. From-SVN: r71991 --- gcc/ChangeLog | 5 +++++ gcc/fold-const.c | 8 ++++---- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 95052f222c0..c6ad7eb1b1c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-10-01 Richard Kenner + + * fold-const.c (make_range): When handling unsigned, don't reverse + range if high bound is zero. + 2003-09-30 Alexandre Oliva config/frv/frv.h (PREDICATE_CODES): Added diff --git a/gcc/fold-const.c b/gcc/fold-const.c index f5a6f78a14f..250d65930a8 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -3076,10 +3076,10 @@ make_range (tree exp, int *pin_p, tree *plow, tree *phigh) in_p = n_in_p, low = n_low, high = n_high; - /* If the high bound is missing, but we - have a low bound, reverse the range so - it goes from zero to the low bound minus 1. */ - if (high == 0 && low) + /* If the high bound is missing, but we have a non-zero low + bound, reverse the range so it goes from zero to the low bound + minus 1. */ + if (high == 0 && low && ! integer_zerop (low)) { in_p = ! in_p; high = range_binop (MINUS_EXPR, NULL_TREE, low, 0, -- 2.30.2