Evan Cheng 80b09fe8bc Teach branch folding pass about implicit_def instructions. Unfortunately we can't just eliminate them since register scavenger expects every register use to be defined. However, we can delete them when there are no intra-block uses. Carefully removing some implicit def's which enable more blocks to be optimized away. ... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49461 91177308-0d34-0410-b5e6-96231b3b80d8		2008-04-10 02:32:10 +00:00
..
Alpha	Fix RUN line.	2008-03-09 19:55:22 +00:00
ARM	1. IMPLICIT_DEF can *re-define* any register.	2008-04-05 01:27:09 +00:00
CBackend	remove an execution test.	2008-03-10 06:53:14 +00:00
CellSPU	Add more patterns to match in the integer comparison test harnesses.	2008-03-20 00:51:36 +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	Rename -disable-required-unwind-tables to -unwind-tables-optional.	2008-04-08 18:10:08 +00:00
SPARC	Remove llvm-upgrade and update tests.	2008-02-19 01:41:04 +00:00
X86	Teach branch folding pass about implicit_def instructions. Unfortunately we can't just eliminate them since register scavenger expects every register use to be defined. However, we can delete them when there are no intra-block uses. Carefully removing some implicit def's which enable more blocks to be optimized away.	2008-04-10 02:32:10 +00:00