Shuxin Yang e0409098ae Fix a bug in Dead Argument Elimination. ... If a function seen at compile time is not necessarily the one linked to the binary being built, it is illegal to change the actual arguments passing to it. e.g. -------------------------- void foo(int lol) { // foo() has linkage satisifying isWeakForLinker() // "lol" is not used at all. } void bar(int lo2) { // xform to foo(undef) is illegal, as compiler dose not know which // instance of foo() will be linked to the the binary being built. foo(lol2); } ----------------------------- Such functions can be captured by isWeakForLinker(). NOTE that mayBeOverridden() is insufficient for this purpose as it dosen't include linkage types like AvailableExternallyLinkage and LinkOnceODRLinkage. Take link_odr* as an example, it indicates a set of *EQUIVALENT* globals that can be merged at link-time. However, the semantic of *EQUIVALENT*-functions includes parameters. Changing parameters breaks the assumption. Thank John McCall for help, especially for the explanation of subtle difference between linkage types. rdar://11546243 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192302 91177308-0d34-0410-b5e6-96231b3b80d8		2013-10-09 17:21:44 +00:00
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ArgumentPromotion.cpp	Clean up some of this code a tiny bit, no functionality change.	2013-07-18 22:32:32 +00:00
BarrierNoopPass.cpp
CMakeLists.txt
ConstantMerge.cpp
DeadArgumentElimination.cpp	Fix a bug in Dead Argument Elimination.	2013-10-09 17:21:44 +00:00
ExtractGV.cpp
FunctionAttrs.cpp	Avoid a compiler warning about Found not being used when assertions are	2013-09-13 08:16:06 +00:00
GlobalDCE.cpp	Implement function prefix data as an IR feature.	2013-09-16 01:08:15 +00:00
GlobalOpt.cpp	Revert r191834 until we measure the effect of this benchmarks and maybe find a better way to fix it	2013-10-07 19:03:24 +00:00
InlineAlways.cpp
Inliner.cpp	Fix comparisons of alloca alignment in inliner merging	2013-07-17 14:32:41 +00:00
InlineSimple.cpp
Internalize.cpp	Optimize linkonce_odr unnamed_addr functions during LTO.	2013-10-03 18:29:09 +00:00
IPConstantPropagation.cpp
IPO.cpp	Optimize linkonce_odr unnamed_addr functions during LTO.	2013-10-03 18:29:09 +00:00
LLVMBuild.txt
LoopExtractor.cpp
Makefile
MergeFunctions.cpp	Don't merge tiny functions.	2013-10-01 18:05:30 +00:00
PartialInlining.cpp
PassManagerBuilder.cpp	Optimize linkonce_odr unnamed_addr functions during LTO.	2013-10-03 18:29:09 +00:00
PruneEH.cpp
StripDeadPrototypes.cpp
StripSymbols.cpp	Fixed typo.	2013-08-27 04:43:03 +00:00