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| author | John David Anglin <dave.anglin@bell.net> | 2015-08-07 13:37:35 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2015-08-08 01:11:44 -0400 |
| commit | 74bc0c3a16e3c8f138e29a284e84d16474b65a8e (patch) | |
| tree | 6f8d981aadf1ddc8d851df12e67dc4bc8cda4afc /ChangeLog | |
| parent | 5d5de49c3ccd69f65b801f1ca490a0112d1cbd7d (diff) | |
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hppa: Fix reload error with atomic code [BZ #18787]
As noted in the bug, the asm operands need to be copied to register
variables to avoid operand reloads in the principal asm of the macro.
See the arm implementation for reference. Otherwise we get:
../sysdeps/unix/sysv/linux/hppa/bits/atomic.h:68:6: error:
can't find a register in class 'R1_REGS' while reloading 'asm'
Build tested on trunk with gcc-4.8. Similar patch has been tested
with 2.19 on Debian hppa-unknown-linux-gnu.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 9 |
1 files changed, 9 insertions, 0 deletions
@@ -1,3 +1,12 @@ +2015-08-08 John David Anglin <danglin@gcc.gnu.org> + + [BZ #18787] + * sysdeps/unix/sysv/linux/hppa/bits/atomic.h (_LWS_CLOBBER): Revise + clobber registers. + (atomic_compare_and_exchange_val_acq): Use register asms to assign + operand registers. Use register %r20 for EAGAIN and EDEADLOCK checks. + Cast return to __typeof (oldval). + 2015-08-08 Mike Frysinger <vapier@gentoo.org> * sysdeps/unix/sysv/linux/microblaze/sysdep.h: Wrap the whole file |