Evan Cheng 9fe2009956 Sorry, several patches in one. ... TargetInstrInfo: Change produceSameValue() to take MachineRegisterInfo as an optional argument. When in SSA form, targets can use it to make more aggressive equality analysis. Machine LICM: 1. Eliminate isLoadFromConstantMemory, use MI.isInvariantLoad instead. 2. Fix a bug which prevent CSE of instructions which are not re-materializable. 3. Use improved form of produceSameValue. ARM: 1. Teach ARM produceSameValue to look pass some PIC labels. 2. Look for operands from different loads of different constant pool entries which have same values. 3. Re-implement PIC GA materialization using movw + movt. Combine the pair with a "add pc" or "ldr [pc]" to form pseudo instructions. This makes it possible to re-materialize the instruction, allow machine LICM to hoist the set of instructions out of the loop and make it possible to CSE them. It's a bit hacky, but it significantly improve code quality. 4. Some minor bug fixes as well. With the fixes, using movw + movt to materialize GAs significantly outperform the load from constantpool method. 186.crafty and 255.vortex improved > 20%, 254.gap and 176.gcc ~10%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123905 91177308-0d34-0410-b5e6-96231b3b80d8		2011-01-20 08:34:58 +00:00
..
Analysis	Similarly, analyze truncate through multiply.	2011-01-19 18:56:00 +00:00
Archive	Archive: Fix temp path names.	2011-01-17 16:43:30 +00:00
AsmParser
Bitcode
CodeGen	Sorry, several patches in one.	2011-01-20 08:34:58 +00:00
CompilerDriver
ExecutionEngine
Linker
MC	Make sure to propogate the error code when we fail to parse a modifier.	2011-01-19 23:06:07 +00:00
Object	Object: Add ELF support.	2011-01-20 06:38:47 +00:00
Support	Support/CommandLine: Add "Did you mean" print for mismatched operands.	2011-01-18 01:59:24 +00:00
Target	Sorry, several patches in one.	2011-01-20 08:34:58 +00:00
Transforms	Add unnamed_addr when we can show that address of a global is not used.	2011-01-19 16:32:21 +00:00
VMCore	Update a comment.	2011-01-20 03:58:43 +00:00
Makefile