diff options
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 49c205c..84209cc 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -1413,8 +1413,15 @@ simplify_binary_operation (code, mode, op0, op1) case DIV: if (trueop1 == CONST1_RTX (mode)) { + /* On some platforms DIV uses narrower mode than its + operands. */ rtx x = gen_lowpart_common (mode, op0); - return x ? x : op0; + if (x) + return x; + else if (mode != GET_MODE (op0) && GET_MODE (op0) != VOIDmode) + return gen_lowpart_SUBREG (mode, op0); + else + return op0; } /* In IEEE floating point, 0/x is not always 0. */ |