[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> n
From: |
hfinkel at anl dot gov |
Subject: |
[Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt) |
Date: |
Mon, 18 May 2015 18:05:50 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=18414
--- Comment #6 from Hal Finkel <hfinkel at anl dot gov> ---
(In reply to Alan Modra from comment #1)
> True, ld will do this. However, the optimization is relying on gcc to
> generate code that can be optimized this way.. So I'm assuming the example
> code was from llvm or assembly.
>
> gcc ensures that the optimization is valid by adding a dependency on r2 to
> the low part of the address calculation.
LLVM updated to add extra r2 read dependencies on instructions with
@address@hidden
relocations in r237556.
--
You are receiving this mail because:
You are on the CC list for the bug.
- [Bug ld/18414] New: TOC optimization, hfinkel at anl dot gov, 2015/05/13
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt), hfinkel at anl dot gov, 2015/05/13
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt), amodra at gmail dot com, 2015/05/13
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt), hfinkel at anl dot gov, 2015/05/13
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt), hfinkel at anl dot gov, 2015/05/13
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt), amodra at gmail dot com, 2015/05/13
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt), hfinkel at anl dot gov, 2015/05/14
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt), bergner at vnet dot ibm.com, 2015/05/18
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt),
hfinkel at anl dot gov <=
- [Bug ld/18414] TOC optimization bug (ignoring data deps on addis/ld -> nop/ld opt), jsweval at arxan dot com, 2015/05/18