Ahmed Bougacha 37be0d7c43 [SimplifyLibCalls] Don't confuse strcpy_chk for stpcpy_chk. ... This was introduced in a faulty refactoring (r225640, mea culpa): the tests weren't testing the return values, so, for both __strcpy_chk and __stpcpy_chk, we would return the end of the buffer (matching stpcpy) instead of the beginning (for strcpy). The root cause was the prefix "__" being ignored when comparing, which made us always pick LibFunc::stpcpy_chk. Pass the LibFunc::Func directly to avoid this kind of error. Also, make the testcases as explicit as possible to prevent this. The now-useful testcases expose another, entangled, stpcpy problem, with the further simplification. This was introduced in a refactoring (r225640) to match the original behavior. However, this leads to problems when successive simplifications generate several similar instructions, none of which are removed by the custom replaceAllUsesWith. For instance, InstCombine (the main user) doesn't erase the instruction in its custom RAUW. When trying to simplify say __stpcpy_chk: - first, an stpcpy is created (fortified simplifier), - second, a memcpy is created (normal simplifier), but the stpcpy call isn't removed. - third, InstCombine later revisits the instructions, and simplifies the first stpcpy to a memcpy. We now have two memcpys. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227250 91177308-0d34-0410-b5e6-96231b3b80d8		2015-01-27 21:52:16 +00:00
..
ADT	Add the triple for the Sony Playstation®4.	2015-01-25 22:46:59 +00:00
Analysis	[PM] Clean up file banner comments prior to refactoring this code.	2015-01-27 08:28:33 +00:00
AsmParser	Pass a MemoryBufferRef when we can avoid taking ownership.	2014-08-26 21:49:01 +00:00
Bitcode	[Bitcode] Diagnose errors instead of asserting from bad input	2015-01-24 04:15:05 +00:00
CodeGen	MachineRegisterInfo can access TII off of the MachineFunction's	2015-01-27 01:15:16 +00:00
Config	[multilib] Add support to the autoconf build to substitute	2014-12-29 11:58:17 +00:00
DebugInfo	[cleanup] Re-sort all the #include lines in LLVM using	2015-01-14 11:23:27 +00:00
ExecutionEngine	Orc/IRCompileLayer.h: Avoid non-static initializer.	2015-01-25 11:41:56 +00:00
IR	Add a FIXME about preferred alignment to DataLayout.	2015-01-26 19:19:04 +00:00
IRReader	Pass a MemoryBufferRef when we can avoid taking ownership.	2014-08-26 21:49:01 +00:00
LineEditor
Linker	Use the DiagnosticHandler to print diagnostics when reading bitcode.	2015-01-10 00:07:30 +00:00
LTO	Remove StringMap::GetOrCreateValue in favor of StringMap::insert	2014-11-19 05:49:42 +00:00
MC	Store the passed in CPU name string so that it can be accessed later.	2015-01-26 17:33:30 +00:00
Object	dd the option, -link-opt-hints to llvm-objdump used with -macho to print the	2015-01-27 21:28:24 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	InstrProf: Add operator!= to coverage counters	2015-01-24 21:13:23 +00:00
Support	Revert r227148 & r227154 which added a test which infinitely loops.	2015-01-27 03:03:47 +00:00
TableGen	Make MultiClass::DefPrototypes own their Records to fix memory leaks.	2014-12-11 05:25:33 +00:00
Target	Remove extraneous period.	2015-01-27 01:01:34 +00:00
Transforms	[SimplifyLibCalls] Don't confuse strcpy_chk for stpcpy_chk.	2015-01-27 21:52:16 +00:00
CMakeLists.txt
InitializePasses.h	[PM] Refactor the core logic to run EarlyCSE over a function into an	2015-01-27 01:34:14 +00:00
LinkAllIR.h
LinkAllPasses.h	Add a new pass "inductive range check elimination"	2015-01-16 01:03:22 +00:00
module.modulemap	Bring the modules buildbot back to life after r226940.	2015-01-24 01:55:52 +00:00
module.modulemap.build
Pass.h
PassAnalysisSupport.h
PassInfo.h
PassManager.h
PassRegistry.h	[PM] Remove an unused and rather expensive mapping from an analysis	2014-10-06 00:30:59 +00:00
PassSupport.h	Defining a new API for debug options that doesn't rely on static global cl::opts.	2014-10-15 21:54:35 +00:00