Evan Cheng d847124211 Thumb2 IT blocks are fairly expensive. When there are multiple selects using ... the same condition, it's important to make sure they are scheduled together to avoid forming multiple IT blocks. I'm adding a pre-regalloc pass that forms IT blocks early (by re-scheduling instructions and split basic blocks) to attempt to fix this. This is not turned on by default since I am not sure this is the right fix. Another issue is llvm selects are modeled as two-address conditional moves. This can be very bad when the copies before the conditional moves are not coalesced away. Teach IT formation pass to move the copies above the IT block (when legal) to avoid breaking the IT block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105669 91177308-0d34-0410-b5e6-96231b3b80d8		2010-06-09 01:46:50 +00:00
..
Analysis	The FoldingSet hash data includes pointer values, so it isn't	2010-06-07 19:36:14 +00:00
Archive	Eliminate some unnessary Path::exists() calls.	2010-05-27 20:51:54 +00:00
AsmParser	Eliminate the restriction that the array size in an alloca must be i32.	2010-05-28 01:14:11 +00:00
Bitcode	Speedup bitcode writer. Do not walk all values for all functions to emit function local metadata. In one testcase, probably worst case scenario, the 70x speed up is seen.	2010-06-02 23:05:04 +00:00
CodeGen	Add argument name comments.	2010-06-09 00:40:31 +00:00
CompilerDriver	Print a space after the colon.	2010-05-20 21:11:37 +00:00
ExecutionEngine	improve portability to systems that don't have powf/modf (e.g. solaris 9)	2010-05-15 17:10:24 +00:00
Linker	Add basic error checking to MemoryBuffer::getSTDIN.	2010-05-27 17:31:51 +00:00
MC	Don't call flush() at a library level which isn't checking for errors	2010-06-01 16:31:34 +00:00
Support	Use const_iterator where appropriate.	2010-06-08 17:21:57 +00:00
System	Factor out the handler work from SignalHandler into a helper function,	2010-05-27 23:11:55 +00:00
Target	Thumb2 IT blocks are fairly expensive. When there are multiple selects using	2010-06-09 01:46:50 +00:00
Transforms	Make bugpoint dead-argument-hacking actually work, and actually test it.	2010-06-07 20:20:33 +00:00
VMCore	Another place where the code wanted to access the argument list and not all of	2010-06-07 19:18:58 +00:00
Makefile