Chandler Carruth b5856c83ff Teach machine block placement to cope with unnatural loops. These don't ... get loop info structures associated with them, and so we need some way to make forward progress selecting and placing basic blocks. The technique used here is pretty brutal -- it just scans the list of blocks looking for the first unplaced candidate. It keeps placing blocks like this until the CFG becomes tractable. The cost is somewhat unfortunate, it requires allocating a vector of all basic block pointers eagerly. I have some ideas about how to simplify and optimize this, but I'm trying to get the logic correct first. Thanks to Benjamin Kramer for the reduced test case out of GCC. Sadly there are other bugs that GCC is tickling that I'm reducing and working on now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144516 91177308-0d34-0410-b5e6-96231b3b80d8		2011-11-14 00:00:35 +00:00
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ARM	The order in which the predicate is added differs between Thumb and ARM mode. Fix predicate when in ARM mode and restore SelectIntrinsicCall.	2011-11-13 09:44:21 +00:00
CBackend	Only run tests in test/CodeGen/CBackend/X86 when both X86 and CBackend are supported	2011-09-26 06:44:27 +00:00
CellSPU	Remove histogram tests.	2011-11-12 22:39:40 +00:00
CPP	manually upgrade a bunch of tests to modern syntax, and remove some that	2011-06-17 03:14:27 +00:00
Generic	Remove the the test which checks the saving of a vector of booleans into memory.	2011-10-16 19:06:06 +00:00
MBlaze	Change the default scheduler from Latency to ILP, since Latency	2011-10-24 17:45:02 +00:00
Mips	Reapply r143206, with fixes. Disallow physical register lifetimes	2011-11-03 21:49:52 +00:00
MSP430	Remove the explicit request for "Latency" scheduling from MSP430,	2011-10-24 17:53:16 +00:00
PowerPC	test/CodeGen/PowerPC/2008-10-17-AsmMatchingOperands.ll: [PR11218] Mark "REQUIRES: asserts" for now.	2011-10-28 23:11:03 +00:00
PTX	allow non-device function calls in PTX when natively handling device-side printf	2011-11-11 14:45:12 +00:00
SPARC	make the asmparser reject function and type redefinitions. 'Merging' hasn't been	2011-06-17 07:06:44 +00:00
Thumb	Reapply r143206, with fixes. Disallow physical register lifetimes	2011-11-03 21:49:52 +00:00
Thumb2	Linear scan is going away.	2011-11-12 22:39:34 +00:00
X86	Teach machine block placement to cope with unnatural loops. These don't	2011-11-14 00:00:35 +00:00
XCore	Don't fold negative offsets into cp / dp accesses to avoid relocation errors.	2011-11-01 11:31:53 +00:00