Bob Wilson 6ee6192312 Clean up some problems with extra CFG edges being introduced during ... if-conversion. The RemoveExtraEdges function doesn't work for blocks that end with unanalyzable branches, so in those cases, the "extra" edges must be explicitly removed. The CopyAndPredicateBlock and MergeBlocks methods can also avoid copying successor edges due to branches that have already been removed. The latter case is especially helpful when MergeBlocks is called for handling "diamond" if-conversions, where otherwise you can end up with some weird intermediate states in the CFG. Unfortunately I've been unable to find cases where this cleanup actually makes a significant difference in the code. There is one test where we manage to remove an empty block at the end of a function. Radar 6911268. llvm-svn: 106939		2010-06-26 04:27:33 +00:00
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Alpha
ARM	Thumb2ITBlockPass: Fix a possible dereference of an invalid iterator. This was	2010-06-25 23:14:54 +00:00
Blackfin
CBackend
CellSPU	Add the check to the testcase of r106419.	2010-06-21 15:11:51 +00:00
CPP
Generic	Move v-binop-widen tests to X86 since they don't work on all platforms	2010-06-22 19:40:50 +00:00
MBlaze
Mips
MSP430
PIC16
PowerPC	Eliminate the other half of the BRCOND optimization, and update	2010-06-24 15:24:03 +00:00
SPARC
SystemZ	SystemZ really does mean "has calls" and not just "adjusts stack." Go ahead and	2010-05-14 22:17:42 +00:00
Thumb	Disable sibcall optimization for Thumb1 for now since Thumb1RegisterInfo::emitEpilogue is not expecting them.	2010-06-19 01:01:32 +00:00
Thumb2	Clean up some problems with extra CFG edges being introduced during	2010-06-26 04:27:33 +00:00
X86	When creating X86 MUL8 and DIV8 instructions, make sure we don't produce	2010-06-26 00:39:23 +00:00
XCore