Jakob Stoklund Olesen d36f5af224 Set correct <def,undef> flags when lowering REG_SEQUENCE. ... A REG_SEQUENCE instruction is lowered into a sequence of partial defs: %vreg7:ssub_0<def,undef> = COPY %vreg20:ssub_0 %vreg7:ssub_1<def> = COPY %vreg2 %vreg7:ssub_2<def> = COPY %vreg2 %vreg7:ssub_3<def> = COPY %vreg2 The first def needs an <undef> flag to indicate it is the beginning of the live range, while the other defs are read-modify-write. Previously, we depended on LiveIntervalAnalysis to notice and fix the missing <def,undef>, but that solution was never robust, it was causing problems with ProcessImplicitDefs and the lowering of chained REG_SEQUENCE instructions. This fixes PR11841. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148879 91177308-0d34-0410-b5e6-96231b3b80d8		2012-01-24 23:28:42 +00:00
..
Analysis	teach valuetracking about ConstantDataSequential	2012-01-24 07:54:10 +00:00
Archive	Avoid using an invalidated iterator.	2012-01-23 05:07:16 +00:00
AsmParser	More dead code removal (using -Wunreachable-code)	2012-01-20 21:51:11 +00:00
Bitcode	Extend Attributes to 64 bits	2012-01-20 17:56:17 +00:00
CodeGen	Set correct <def,undef> flags when lowering REG_SEQUENCE.	2012-01-24 23:28:42 +00:00
DebugInfo	More dead code removal (using -Wunreachable-code)	2012-01-20 21:51:11 +00:00
ExecutionEngine	add more support for ConstantDataSequential	2012-01-24 13:41:11 +00:00
Linker	add more support for ConstantDataSequential	2012-01-24 13:41:11 +00:00
MC	ARM Darwin symbol ref differences w/o subsection-via-symbols.	2012-01-24 21:45:25 +00:00
Object	Sink assert-only variables into the asserts	2012-01-24 19:43:30 +00:00
Support	Remove dead default.	2012-01-23 22:37:11 +00:00
TableGen	More dead code removal (using -Wunreachable-code)	2012-01-20 21:51:11 +00:00
Target	Sign-extend 32-bit integer arguments when they are passed in 64-bit registers,	2012-01-24 23:18:43 +00:00
Transforms	[asan] enable asan only for the functions that have Attribute::AddressSafety	2012-01-24 19:34:43 +00:00
VMCore	C++, CBE, and TLOF support for ConstantDataSequential	2012-01-24 14:17:05 +00:00
CMakeLists.txt	Move TableGen's parser and entry point into a library	2011-10-01 16:41:13 +00:00
LLVMBuild.txt
Makefile	Remove more of llvmc and dependencies.	2011-09-20 00:34:27 +00:00