Duncan Sands 2cfbf018a9 If the phi node was used by an unreachable instruction that ends up using ... itself without going via a phi node then we could return false here in spite of making a change. Also, tweak the comment because this method can (and always could) return true without deleting the original phi node. For example, if the phi node was used by a read-only invoke instruction which is used by another phi node phi2 which is only used by and only uses the invoke, then phi2 would be deleted but not the invoke instruction and not the original phi node. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126129 91177308-0d34-0410-b5e6-96231b3b80d8		2011-02-21 17:32:05 +00:00
..
Analysis	Move "A | ~(A & ?) -> -1" from InstCombine to InstructionSimplify.	2011-02-20 15:20:01 +00:00
Archive	Archive: Fix temp path names.	2011-01-17 16:43:30 +00:00
AsmParser	convert ConstantVector::get to use ArrayRef.	2011-02-15 00:14:00 +00:00
Bitcode	Move library stuff out of the toplevel CMakeLists.txt file.	2011-02-18 22:06:14 +00:00
CodeGen	Fix to correctly support attribute((section("__DATA, __common"))).	2011-02-21 17:27:17 +00:00
CompilerDriver	Support/Path: Deprecate PathV1::exists and replace all uses with PathV2::fs::exists.	2011-01-10 02:34:23 +00:00
ExecutionEngine	Move library stuff out of the toplevel CMakeLists.txt file.	2011-02-18 22:06:14 +00:00
Linker	Correctly merge available_externally and regular definitions when they have	2011-02-01 05:33:52 +00:00
MC	Fix to correctly support attribute((section("__DATA, __common"))).	2011-02-21 17:27:17 +00:00
Object	Object: Fix type punned pointer issues by making DataRefImpl a union and using intptr_t.	2011-01-21 02:27:02 +00:00
Support	The signed version of our "magic number" computation for the integer approximation	2011-02-21 00:22:02 +00:00
Target	a serious "compare CSE" issue that is nontrivial to get right,	2011-02-21 17:03:47 +00:00
Transforms	If the phi node was used by an unreachable instruction that ends up using	2011-02-21 17:32:05 +00:00
VMCore	These tags are now covered by dwarf::TagString().	2011-02-18 23:13:40 +00:00
CMakeLists.txt	Move library stuff out of the toplevel CMakeLists.txt file.	2011-02-18 22:06:14 +00:00
Makefile	Add LLVMObject Library.	2010-11-15 03:21:41 +00:00