OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

(build_binary_op, case *_DIV_EXPR): Use same shorten 

condition as for TRUNC_MOD_EXPR.

From-SVN: r6353
This commit is contained in:
Torbjorn Granlund 1994-01-03 21:59:04 +00:00
parent 61f275ffe7
commit 8b39ed65f1
1 changed files with 11 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
gcc/c-typeck.c
View File

@ -1940,9 +1940,17 @@ build_binary_op (code, orig_op0, orig_op1, convert_p)
if (!(code0 == INTEGER_TYPE && code1 == INTEGER_TYPE))
resultcode = RDIV_EXPR;
else
/* When dividing two signed integers, you have to promote to int.
E.g. (short) -32768 / (short) -1 doesn't fit in a short. */
shorten = TREE_UNSIGNED (orig_op0);
{
/* Although it would be tempting to shorten always here, that
loses on some targets, since the modulo instruction is
undefined if the quotient can't be represented in the
computation mode. We shorten only if unsigned or if
dividing by something we know != -1. */
shorten = (TREE_UNSIGNED (orig_op0)
|| (TREE_CODE (op1) == INTEGER_CST
&& (TREE_INT_CST_LOW (op1) != -1
|| TREE_INT_CST_HIGH (op1) != -1)));
}
common = 1;
}
break;