Evan Cheng 79a796c2b1 Fix PR2536: a nasty spiller bug. If a two-address instruction uses a register but the use portion of its live range is not part of its liveinterval, it must be defined by an implicit_def. In that case, do not spill the use. e.g. ... 8 %reg1024<def> = IMPLICIT_DEF 12 %reg1024<def> = INSERT_SUBREG %reg1024<kill>, %reg1025, 2 The live range [12, 14) are not part of the r1024 live interval since it's defined by an implicit def. It will not conflicts with live interval of r1025. Now suppose both registers are spilled, you can easily see a situation where both registers are reloaded before the INSERT_SUBREG and both target registers that would overlap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53503 91177308-0d34-0410-b5e6-96231b3b80d8		2008-07-12 01:56:02 +00:00
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Alpha	Don't try to compile tests for the ev56 alpha subtarget, which hasn't been	2008-06-12 13:44:26 +00:00
ARM	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
CBackend	Remove invalid test	2008-06-08 16:59:10 +00:00
CellSPU	Add necessary 64-bit support so that gcc frontend compiles (mostly). Current	2008-06-02 22:18:03 +00:00
CPP	Put CPPBackend tests into their own directory and run them only if they're	2008-07-10 22:35:32 +00:00
Generic	Implement split and scalarize for SELECT_CC, fixing PR2504	2008-06-30 02:43:01 +00:00
IA64	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
PowerPC	Fix an altivec constant miscompilation that Duncan found through	2008-07-10 16:33:38 +00:00
SPARC	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
X86	Fix PR2536: a nasty spiller bug. If a two-address instruction uses a register but the use portion of its live range is not part of its liveinterval, it must be defined by an implicit_def. In that case, do not spill the use. e.g.	2008-07-12 01:56:02 +00:00