In the process of factoring out the "lowpart bit field" check
from an earlier patch, I somehow managed to drop an "== 0" condition.
It seems I then compounded that by screwing up the powerpc64 testing
(still not sure how :-().
Anyway, fixed with the patch below, tested on powerpc64-linux-gnu.
Sorry for the breakage, and thanks to Segher for the heads-up.
Richard
gcc/
* expmed.c (lowpart_bit_field_p): Add missing == 0 check.
Index: gcc/expmed.c
===================================================================
--- gcc/expmed.c 2012-10-24 11:32:33.000000000 +0100
+++ gcc/expmed.c 2012-10-24 18:52:58.303570945 +0100
@@ -402,7 +402,7 @@ lowpart_bit_field_p (unsigned HOST_WIDE_
enum machine_mode struct_mode)
{
if (BYTES_BIG_ENDIAN)
- return (bitnum % BITS_PER_UNIT
+ return (bitnum % BITS_PER_UNIT == 0
&& (bitnum + bitsize == GET_MODE_BITSIZE (struct_mode)
|| (bitnum + bitsize) % BITS_PER_WORD == 0));
else
