Evan Cheng 94202018c5 Fix live variables issues: ... 1. If part of a register is re-defined, an implicit kill and an implicit def are added to denote read / mod / write. However, this should only be necessary if the register is actually read later. This is a performance issue. 2. If a sub-register is being defined, and it doesn't have a previous use, do not add a implicit kill to the last use of a super-register: = EAX, AX<imp-use,kill> ... AX = In this case, EAX is live but AX is killed, this is wrong and will cause the coalescer to do bad things. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48521 91177308-0d34-0410-b5e6-96231b3b80d8		2008-03-19 00:52:20 +00:00
..
Alpha	Fix RUN line.	2008-03-09 19:55:22 +00:00
ARM	Fixed a register scavenger bug. If a def is re-defining part of a super register, there must be an implicit def of the super-register on the MI.	2008-03-07 20:12:54 +00:00
CBackend	remove an execution test.	2008-03-10 06:53:14 +00:00
CellSPU	- Style cleanup in IA64ISelLowering.h: add 'virtual' keyword for consistency.	2008-03-10 23:49:09 +00:00
Generic	Make this test x86-specific for now; targets that don't use	2008-03-12 00:25:14 +00:00
IA64	Remove llvm-upgrade and update tests.	2008-02-19 01:41:04 +00:00
PowerPC	Fix live variables issues:	2008-03-19 00:52:20 +00:00
SPARC	Remove llvm-upgrade and update tests.	2008-02-19 01:41:04 +00:00
X86	Fix live variables issues:	2008-03-19 00:52:20 +00:00