Chandler Carruth 3b7b209bf8 Fix a devilish miscompile exposed by block placement. The ... updateTerminator code didn't correctly handle EH terminators in one very specific case. AnalyzeBranch would find no terminator instruction, and so the fallback in updateTerminator is to assume fallthrough. This is correct, but the destination of the fallthrough was assumed to be the first successor. This is *almost always* true, but in certain cases the loop transformations will cause the landing pad to be the first successor! Instead of this brittle logic, actually look through the successors for a non-landing-pad accessor, and to assert if more than one is found. This will hopefully fix some (if not all) of the self host miscompiles with block placement. Thanks to Benjamin Kramer for reporting, Nick Lewycky for an initial stab at a reduction, and Duncan for endless advice on EH (which I know nothing about) as well as reviewing the actual fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145062 91177308-0d34-0410-b5e6-96231b3b80d8		2011-11-22 13:13:16 +00:00
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Analysis	Don't forget to check FlagNW when determining whether an AddRecExpr will wrap	2011-11-09 07:11:37 +00:00
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CodeGen	Fix a devilish miscompile exposed by block placement. The	2011-11-22 13:13:16 +00:00
DebugInfo	The dwarf standard says that the only differences between a out-of-line	2011-11-12 01:57:54 +00:00
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Instrumentation/AddressSanitizer	[asan] workaround for reg alloc bug 11395: don't instrument functions with large chunks of inline assembler	2011-11-18 01:41:06 +00:00
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MC	Remove obsolete test.	2011-11-16 22:50:38 +00:00
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Transforms	Fix crasher in GVN due to my recent capture tracking changes.	2011-11-21 19:42:56 +00:00
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Makefile	build/make/test: Get rid of unused BUGPOINT_TOPTS variable.	2011-11-16 23:56:03 +00:00
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