Jakob Stoklund Olesen 069e100f9a Don't fold insufficiently aligned ldr/str into ldm/stm instructions. ...

An unaligned ldr causes a trap, and is then emulated by the kernel with
awesome performance. The darwin kernel does not emulate unaligned ldm/stm
Thumb2 instructions, so don't generate them.

This fixes the miscompilation of Multisource/Applications/JM/lencod for Thumb2.

Generating unaligned ldr/str pairs from a 16-bit aligned memcpy is probably
also a bad idea, but that is beyond the scope of this patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93393 91177308-0d34-0410-b5e6-96231b3b80d8

2010-01-14 00:54:10 +00:00

..

Analysis

Respond to Chris' review:

2010-01-11 07:45:19 +00:00

Archive

Prune #includes from llvm/Linker.h and llvm/System/Path.h,

2009-08-23 22:45:37 +00:00

AsmParser

Consolidate ConvertGlobalValIDToValue, ConvertGlobalOrMetadataValIDToValue, and ConvertValIDToValue into a more powerful ConvertValIDToValue() that does all three's work

2010-01-11 22:31:58 +00:00

Bitcode

Fix comment typo

2010-01-13 21:25:04 +00:00

CodeGen

Commit some changes I had managed to lose last night while refactoring the code. Avoid change use of PHI instructions because it's not legal to insert any instructions before them.

2010-01-13 19:16:39 +00:00

CompilerDriver

Make Path use StringRef instead of std::string where possible.

2009-12-17 21:02:39 +00:00

ExecutionEngine

"In order to ease automatic bindings generation, it would be helpful if boolean values were distinguishable from integers. The attached patch introduces "typedef int LLVMBool;", and uses LLVMBool instead of int throughout the C API, wherever a boolean value is called for."

2010-01-09 22:27:07 +00:00

Linker

Fixed linking of modules containing aliases to constant bitcasts. Existing behaviour first tried to replace the aliases with the global that they aliased (rather than the bitcast), causing a crash on an assert because the types didn't match. When this was fixed, it then did the same thing creating the new alias (creating an alias with a different type to its aliasee).

2010-01-09 16:27:31 +00:00

MC

tidy

2010-01-13 21:21:29 +00:00

Support

Introduce Twine::toStringRef, a variant of toVector which avoids the copy if the

2010-01-13 12:45:23 +00:00

System

Alternative fix to make sure that the extern declarations used by

2009-12-23 19:12:50 +00:00

Target

Don't fold insufficiently aligned ldr/str into ldm/stm instructions.

2010-01-14 00:54:10 +00:00

Transforms

When the visitSub method was split into visitSub and visitFSub, this xform was

2010-01-13 23:23:17 +00:00

VMCore

Introduce Twine::toStringRef, a variant of toVector which avoids the copy if the

2010-01-13 12:45:23 +00:00

Makefile

remove llvm-db: it is completely broken and if anyone wants to do a debugger,

2009-10-05 02:29:51 +00:00