mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-11 10:14:38 +02:00
882a558332
This applies Richard Sandiford's patch for Linaro GCC as an alternative to disabling the Linaro-specific extension elimination optimization altogether. Original patch: https://bugs.launchpad.net/gcc-linaro/+bug/728315 Signed-off-by: Mark Mentovai <mark@moxienet.com> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25871 3c298f89-4303-0410-b956-a3cf2f4a3e73
19 lines
678 B
Diff
19 lines
678 B
Diff
https://bugs.launchpad.net/gcc-linaro/+bug/728315
|
|
https://lists.openwrt.org/pipermail/openwrt-devel/2011-March/009847.html
|
|
|
|
--- a/gcc/ee.c
|
|
+++ b/gcc/ee.c
|
|
@@ -209,7 +209,11 @@
|
|
|
|
*regno = REGNO (reg);
|
|
|
|
- if (paradoxical_subreg_p (use))
|
|
+ /* Non-paradoxical SUBREGs of promoted vars guarantee that the
|
|
+ upper (elided) bits of the inner register have a particular value.
|
|
+ For our purposes, such SUBREGs act as a full reference to the
|
|
+ inner register. */
|
|
+ if (paradoxical_subreg_p (use) || SUBREG_PROMOTED_VAR_P (use))
|
|
*size = GET_MODE_BITSIZE (GET_MODE (reg));
|
|
else
|
|
*size = subreg_lsb (use) + GET_MODE_BITSIZE (GET_MODE (use));
|