Chandler Carruth 0c25726596 [PM] Remove the preverifier and directly compute the DominatorTree for ... the verifier after ensuring the CFG is at least usefully formed. This fixes a number of problems: 1) The PreVerifier was missing the controls the Verifier provides over *how* an invalid module is handled -- it just aborted the program! Now it uses the same logic as the Verifier which is significantly more library-friendly. 2) The DominatorTree used previously could have been cached and not updated due to bugs in prior passes and we would silently use the stale tree. This could cause dominance errors to not be as quickly diagnosed. 3) We can now (in the next patch) pull the functionality of the verifier apart from the pass infrastructure so that you can verify IR without having any form of pass manager. This in turn frees the code to share logic between old and new pass manager variants. Along the way I fixed at least one annoying bug -- the state for 'Broken' wasn't being cleared from run to run causing all functions visited after the first broken function to be marked as broken regardless of whether *they* were a problem. Fortunately, I don't really know much of a way to observe this peculiarity. In case folks are worried about the runtime cost, its negligible. I looked at running the entire regression test suite (which should be a relatively good use of the verifier) before and after but was unable to even measure the time spent on the verifier and there was no regresion from before to after. I checked both with debug builds and optimized builds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199487 91177308-0d34-0410-b5e6-96231b3b80d8		2014-01-17 10:56:02 +00:00
..
Analysis	BasicAA: We need to check both access sizes when comparing a gep and an	2014-01-16 04:53:18 +00:00
AsmParser	Decouple dllexport/dllimport from linkage	2014-01-14 15:22:47 +00:00
Bitcode	Make parseBitcodeFile return an ErrorOr<Module *>.	2014-01-15 01:08:23 +00:00
CodeGen	Add an emitRawComment function and use it to simplify some uses of EmitRawText.	2014-01-16 16:28:37 +00:00
DebugInfo	llvm-dwarfdump: type unit dwo support	2014-01-09 05:08:24 +00:00
ExecutionEngine	Attempt to fix the MSVC build.	2014-01-16 05:09:32 +00:00
IR	[PM] Remove the preverifier and directly compute the DominatorTree for	2014-01-17 10:56:02 +00:00
IRReader	Make parseBitcodeFile return an ErrorOr<Module *>.	2014-01-15 01:08:23 +00:00
Linker	Reapply r194218 with fix:	2014-01-16 06:29:36 +00:00
LTO	[LTO] Add a hook to map LLVM diagnostics into the clients of LTO.	2014-01-15 22:04:35 +00:00
MC	Tweak the MCExternalSymbolizer to print references to C string literals	2014-01-16 18:43:56 +00:00
Object	llvm-objdump/COFF: Print DLL name in the export table header.	2014-01-16 20:50:34 +00:00
Option	Avoid buffer copies when a Twine already is a StringRef.	2013-12-03 18:18:28 +00:00
Support	raw_fd_ostream: Don't change STDERR to O_BINARY, or w*printf() (in assert()) would barf wide chars after llvm::errs().	2014-01-12 16:14:24 +00:00
TableGen	[TableGen] Correctly generate implicit anonymous prototype defs in multiclasses	2014-01-02 20:47:09 +00:00
Target	[AArch64 NEON] Expand vector for UDIV/SDIV/UREM/SREM/FREM as neon doesn't support these operations.	2014-01-17 09:54:30 +00:00
Transforms	[opt][PassInfo] Allow opt to run passes that need target machine.	2014-01-16 21:44:34 +00:00
CMakeLists.txt	Move LTO support library to a component, allowing it to be tested	2013-09-24 23:52:22 +00:00
LLVMBuild.txt	Move LTO support library to a component, allowing it to be tested	2013-09-24 23:52:22 +00:00
Makefile	Reformat Makefile. No other changes.	2013-10-30 04:03:03 +00:00