Chris Lattner d9c3a0d7cc Various passes before isel split edges and do other CFG-restructuring changes. ... isel has its own particular features that it wants in the CFG, in order to reduce the number of times a constant is computed, etc. Make sure that we clean up the CFG before doing any other things for isel. Doing so can dramatically reduce the number of split edges and reduce the number of places that constants get computed. For example, this shrinks CodeGen/Generic/phi-immediate-factoring.ll from 44 to 37 instructions on X86, and from 21 to 17 MBB's in the output. This is primarily a code size win, not a performance win. This implements CodeGen/Generic/phi-immediate-factoring.ll and PR1296. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35575 91177308-0d34-0410-b5e6-96231b3b80d8		2007-04-02 01:35:34 +00:00
..
Analysis	The bit counting intrinsics return i32 not the operand type. This fixes	2007-04-01 18:42:20 +00:00
Archive	For PR789:	2007-03-29 19:05:44 +00:00
AsmParser	For PR1289: Regenerate	2007-03-30 01:37:39 +00:00
Bytecode	For PR789:	2007-03-29 19:05:44 +00:00
CodeGen	For PR1297:	2007-04-02 01:01:49 +00:00
Debugger	For PR789:	2007-03-29 19:05:44 +00:00
ExecutionEngine	For PR1293:	2007-03-30 16:41:50 +00:00
Linker
Support	Implement union of wrapped sets.	2007-04-01 03:47:44 +00:00
System	Use the stat information in the Path object, if it is already obtained. This	2007-03-29 19:11:22 +00:00
Target	- Divides the comparisons in two types: comparisons that only use N and Z	2007-04-02 01:30:03 +00:00
Transforms	Various passes before isel split edges and do other CFG-restructuring changes.	2007-04-02 01:35:34 +00:00
VMCore	For PR1297:	2007-04-01 07:25:33 +00:00
Makefile