Bob Wilson f6a4d3c2f3 Avoid write-after-write issue hazards for Cortex-A9. ... Add a avoidWriteAfterWrite() target hook to identify register classes that suffer from write-after-write hazards. For those register classes, try to avoid writing the same register in two consecutive instructions. This is currently disabled by default. We should not spill to avoid hazards! The command line flag -avoid-waw-hazard can be used to enable waw avoidance. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129772 91177308-0d34-0410-b5e6-96231b3b80d8		2011-04-19 18:11:45 +00:00
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Alpha
ARM	Avoid write-after-write issue hazards for Cortex-A9.	2011-04-19 18:11:45 +00:00
Blackfin	Don't completely eliminate identity copies that also modify super register liveness.	2011-03-31 17:55:25 +00:00
CBackend
CellSPU
CPP
Generic
MBlaze
Mips	Make tests register allocation independent again.	2011-04-19 00:14:43 +00:00
MSP430
PowerPC
PTX
SPARC
SystemZ	Fix SystemZ tests	2011-03-31 23:02:12 +00:00
Thumb	Make tests register allocation independent again.	2011-04-19 00:14:43 +00:00
Thumb2
X86	Add support for FastISel'ing varargs calls.	2011-04-19 17:22:22 +00:00
XCore