Andrew Trick b961a26cec Allow MachineCSE to coalesce trivial subregister copies the same way ... that it coalesces normal copies. Without this, MachineCSE is powerless to handle redundant operations with truncated source operands. This required fixing the 2-addr pass to handle tied subregisters. It isn't clear what combinations of subregisters can legally be tied, but the simple case of truncated source operands is now safely handled: %vreg11<def> = COPY %vreg1:sub_32bit; GR32:%vreg11 GR64:%vreg1 %vreg12<def> = COPY %vreg2:sub_32bit; GR32:%vreg12 GR64:%vreg2 %vreg13<def,tied1> = ADD32rr %vreg11<tied0>, %vreg12<kill>, %EFLAGS<imp-def> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197414 91177308-0d34-0410-b5e6-96231b3b80d8		2013-12-16 19:36:21 +00:00
..
Analysis	[block-freq] Teach branch probability how to return the edge weight in between a BasicBlock and one of its successors.	2013-12-14 02:24:25 +00:00
AsmParser
Bitcode	Remove unused value.	2013-12-07 02:27:52 +00:00
CodeGen	Allow MachineCSE to coalesce trivial subregister copies the same way	2013-12-16 19:36:21 +00:00
DebugInfo	DebugInfo: Move type units into the debug_types section with appropriate comdat grouping and type unit headers	2013-12-13 21:33:40 +00:00
ExecutionEngine	Prune redundant dependencies in LLVMBuild.txt.	2013-12-11 00:30:57 +00:00
IR	Fix AsmWriter's handling of SPIR calling conventions. Patch by Boaz Ouriel.	2013-12-15 10:01:20 +00:00
IRReader
Linker
LTO	Add TargetLibraryInfo in LTO passes builder	2013-12-12 01:37:39 +00:00
MC	DebugInfo: Move type units into the debug_types section with appropriate comdat grouping and type unit headers	2013-12-13 21:33:40 +00:00
Object
Option
Support	Recognize EABIHF as environment and use it for RTAPI + VFP.	2013-12-16 18:51:28 +00:00
TableGen
Target	One last cleanup of LLVM's DataLayout strings.	2013-12-16 19:31:14 +00:00
Transforms	Fix a use-after-free error in GlobalOpt CleanupConstantGlobalUsers	2013-12-12 20:45:24 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile