Philip Reames 4527f27ca2 Carry facts about nullness and undef across GC relocation ... This change implements four basic optimizations: If a relocated value isn't used, it doesn't need to be relocated. If the value being relocated is null, relocation doesn't change that. (Technically, this might be collector specific. I don't know of one which it doesn't work for though.) If the value being relocated is undef, the relocation is meaningless. If the value being relocated was known nonnull, the relocated pointer also isn't null. (Since it points to the same source language object.) I outlined other planned work in comments. Differential Revision: http://reviews.llvm.org/D6600 llvm-svn: 224968		2014-12-29 23:27:30 +00:00
..
CMakeLists.txt	Tidy up a bit. No functional change.	2013-04-05 21:20:12 +00:00
InstCombine.h	InstCombine: Infer nuw for multiplies	2014-12-26 09:50:35 +00:00
InstCombineAddSub.cpp	InstCombe: Infer nsw for multiplies	2014-12-26 09:10:14 +00:00
InstCombineAndOrXor.cpp	InstCombe: Infer nsw for multiplies	2014-12-26 09:10:14 +00:00
InstCombineCalls.cpp	Carry facts about nullness and undef across GC relocation	2014-12-29 23:27:30 +00:00
InstCombineCasts.cpp	More code format fix from r224133, NFC	2014-12-12 18:48:37 +00:00
InstCombineCompares.cpp	Removed extra line from a comment to test first commit. NFC.	2014-11-28 10:38:18 +00:00
InstCombineLoadStoreAlloca.cpp	Loading from null is valid outside of addrspace 0	2014-12-29 22:46:21 +00:00
InstCombineMulDivRem.cpp	InstCombine: Infer nuw for multiplies	2014-12-26 09:50:35 +00:00
InstCombinePHI.cpp	Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>	2014-11-19 07:49:26 +00:00
InstCombineSelect.cpp	InstCombine: Squash an icmp+select into bitwise arithmetic	2014-12-20 04:45:35 +00:00
InstCombineShifts.cpp	Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.)	2014-09-07 18:57:58 +00:00
InstCombineSimplifyDemanded.cpp	Add additional patterns for @llvm.assume in ValueTracking	2014-09-07 19:21:07 +00:00
InstCombineVectorOps.cpp	fixed some typos	2014-07-07 22:13:58 +00:00
InstCombineWorklist.h	Canonicalize header guards into a common format.	2014-08-13 16:26:38 +00:00
InstructionCombining.cpp	Reapply: [InstCombine] Fix visitSwitchInst to use right operand types for sub cstexpr	2014-12-19 17:12:35 +00:00
LLVMBuild.txt	LLVMBuild: Remove trailing newline, which irked me.	2011-12-12 19:48:00 +00:00
Makefile