Chandler Carruth 3273c8937b Rather than trying to use the loop block sequence *or* the function ... block sequence when recovering from unanalyzable control flow constructs, *always* use the function sequence. I'm not sure why I ever went down the path of trying to use the loop sequence, it is fundamentally not the correct sequence to use. We're trying to preserve the incoming layout in the cases of unreasonable control flow, and that is only encoded at the function level. We already have a filter to select *exactly* the sub-set of blocks within the function that we're trying to form into a chain. The resulting code layout is also significantly better because of this. In several places we were ending up with completely unreasonable control flow constructs due to the ordering chosen by the loop structure for its internal storage. This change removes a completely wasteful vector of basic blocks, saving memory allocation in the common case even though it costs us CPU in the fairly rare case of unnatural loops. Finally, it fixes the latest crasher reduced out of GCC's single source. Thanks again to Benjamin Kramer for the reduction, my bugpoint skills failed at it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144627 91177308-0d34-0410-b5e6-96231b3b80d8		2011-11-15 06:26:43 +00:00
..
ARM	Add vmov.f32 to materialize f32 immediate splats which cannot be handled by	2011-11-15 02:12:34 +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
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
Thumb	Reapply r143206, with fixes. Disallow physical register lifetimes	2011-11-03 21:49:52 +00:00
Thumb2	Add vmov.f32 to materialize f32 immediate splats which cannot be handled by	2011-11-15 02:12:34 +00:00
X86	Rather than trying to use the loop block sequence *or* the function	2011-11-15 06:26:43 +00:00
XCore	Don't fold negative offsets into cp / dp accesses to avoid relocation errors.	2011-11-01 11:31:53 +00:00