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riscv-gcc-1
Commit c565a6b7 by J"orn Rennecke Committed by Jeff Law
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* fold-const.c (make_range): Don't try to reverse an unbounded range. 

From-SVN: r31197
parent 70dec765
Showing with 9 additions and 4 deletions
gcc/ChangeLog
Tue Jan 4 01:35:13 2000 J"orn Rennecke <amylaar@cygnus.co.uk>
* fold-const.c (make_range): Don't try to reverse an unbounded range.
Tue Jan 4 00:18:46 2000 Jeffrey A Law (law@cygnus.com)
* regclass.c (regclass): Properly compute loop_cost. Adjust
......
gcc/fold-const.c
/* Fold a constant sub-tree into a single node for C-compiler
Copyright (C) 1987, 88, 92-98, 1999 Free Software Foundation, Inc.
Copyright (C) 1987, 88, 92-98, 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
......@@ -3315,9 +3315,10 @@ make_range (exp, pin_p, plow, phigh)
in_p = n_in_p, low = n_low, high = n_high;
/* If the high bound is missing, reverse the range so it
goes from zero to the low bound minus 1. */
if (high == 0)
/* 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)
{
in_p = ! in_p;
high = range_binop (MINUS_EXPR, NULL_TREE, low, 0,
......
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