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JF Bastien 97b08c404c Support unaligned load/store on more ARM targets 
This patch matches GCC behavior: the code used to only allow unaligned
load/store on ARM for v6+ Darwin, it will now allow unaligned load/store
for v6+ Darwin as well as for v7+ on Linux and NaCl.

The distinction is made because v6 doesn't guarantee support (but LLVM
assumes that Apple controls hardware+kernel and therefore have
conformant v6 CPUs), whereas v7 does provide this guarantee (and
Linux/NaCl behave sanely).

The patch keeps the -arm-strict-align command line option, and adds
-arm-no-strict-align. They behave similarly to GCC's -mstrict-align and
-mnostrict-align.

I originally encountered this discrepancy in FastIsel tests which expect
unaligned load/store generation. Overall this should slightly improve
performance in most cases because of reduced I$ pressure.

llvm-svn: 182175
 		2013-05-17 23:49:01 +00:00
..
Analysis Respect the 'nobuiltin' attribute when determining if a call is to a memory builtin. 2013-05-16 04:12:04 +00:00
Archive Fix auto_ptr is deprecated warnings 2013-02-26 21:20:35 +00:00
AsmParser Add ArrayRef constructor from None, and do the cleanups that this constructor enables 2013-05-05 00:40:33 +00:00
Bitcode Micro-optimization: don't shift an entire bitcode record over to get the code. 2013-05-10 22:17:10 +00:00
CodeGen Replace redundant code 2013-05-17 21:43:43 +00:00
DebugInfo libDebugInfo depends on libObject nowadays. 2013-05-09 13:48:26 +00:00
ExecutionEngine r182085 introduced a change that triggered an assertion on ARM. This is an immediate fix 2013-05-17 14:31:59 +00:00
IR Remove dead code. 2013-05-15 22:41:28 +00:00
IRReader Measure time that IR parsing took as part of the -time-passes measurement. 2013-04-03 15:33:45 +00:00
Linker Fix a performance bug in the Linker. 2013-05-04 05:05:18 +00:00
MC Cleanup relocation sorting for ELF. 2013-05-15 18:22:01 +00:00
Object Convert obj2yaml to use yamlio. 2013-05-17 22:58:42 +00:00
Option Resort the #include lines in include/... and lib/... with the 2013-01-02 10:22:59 +00:00
Support Fix build on Windows 2013-05-15 09:00:30 +00:00
TableGen Allow TableGen DAG arguments to be just a name. 2013-03-24 19:36:51 +00:00
Target Support unaligned load/store on more ARM targets 2013-05-17 23:49:01 +00:00
Transforms Add missing -*- C++ -*- to headers 2013-05-17 21:43:39 +00:00
CMakeLists.txt Split out the IRReader header and the utility functions it provides into 2013-03-26 02:25:37 +00:00
LLVMBuild.txt Split out the IRReader header and the utility functions it provides into 2013-03-26 02:25:37 +00:00
Makefile Split out the IRReader header and the utility functions it provides into 2013-03-26 02:25:37 +00:00