Andrew Trick 8adae96fd9 Evict local live ranges if they can be reassigned. ... The previous change to local live range allocation also suppressed eviction of local ranges. In rare cases, this could result in more expensive register choices. This commit actually revives a feature that I added long ago: check if live ranges can be reassigned before eviction. But now it only happens in rare cases of evicting a local live range because another local live range wants a cheaper register. The benefit is improved code size for some benchmarks on x86 and armv7. I measured no significant compile time increase and performance changes are noise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187140 91177308-0d34-0410-b5e6-96231b3b80d8		2013-07-25 18:35:19 +00:00
..
AArch64	AArch64: add llc-based tests for previous commit.	2013-07-25 16:23:55 +00:00
ARM	Evict local live ranges if they can be reassigned.	2013-07-25 18:35:19 +00:00
CPP
Generic	Debug Info: clean up usage of Verify.	2013-06-28 05:43:10 +00:00
Hexagon	Debug Info: improve the Finder.	2013-07-24 17:10:09 +00:00
Inputs
MBlaze	Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.	2013-07-14 06:24:09 +00:00
Mips	Allocate local registers in order for optimal coloring.	2013-07-25 18:35:14 +00:00
MSP430	Use conventional syntax for branches.	2013-07-14 18:19:44 +00:00
NVPTX	[NVPTX] Use approximate FP ops when unsafe-fp-math is used, and append	2013-07-22 12:18:04 +00:00
PowerPC	Debug Info: improve the Finder.	2013-07-24 17:10:09 +00:00
R600	DAGCombiner: Pass the correct type to TargetLowering::isF(Abs|Neg)Free	2013-07-23 23:55:03 +00:00
SI
SPARC	Allocate local registers in order for optimal coloring.	2013-07-25 18:35:14 +00:00
SystemZ	[SystemZ] Rework compare and branch support	2013-07-25 09:34:38 +00:00
Thumb	Debug Info: improve the Finder.	2013-07-24 17:10:09 +00:00
Thumb2	Refactor AnalyzeBranch on ARM. The previous version did not always analyze	2013-07-19 23:52:47 +00:00
X86	Evict local live ranges if they can be reassigned.	2013-07-25 18:35:19 +00:00
XCore	Disambiguate function names in some CodeGen tests. (Some tests were using function names that also were names of instructions and/or doing other unusual things that were making the test not amenable to otherwise scriptable pattern matching.) No functionality change.	2013-07-18 22:29:15 +00:00