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mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-25 05:52:53 +02:00
llvm-mirror/lib/Transforms
Chandler Carruth edc84248f8 [PM] The order of evaluation of these analyses is actually significant,
much to my horror, so use variables to fix it in place.

This terrifies me. Both basic-aa and memdep will provide more precise
information when the domtree and/or the loop info is available. Because
of this, if your pass (like GVN) requires domtree, and then queries
memdep or basic-aa, it will get more precise results. If it does this in
the other order, it gets less precise results.

All of the ideas I have for fixing this are, essentially, terrible. Here
I've just caused us to stop having unspecified behavior as different
implementations evaluate the order of these arguments differently. I'm
actually rather glad that they do, or the fragility of memdep and
basic-aa would have gone on unnoticed. I've left comments so we don't
immediately break this again. This should fix bots whose host compilers
evaluate the order of arguments differently from Clang.

llvm-svn: 263231
2016-03-11 13:26:47 +00:00
..
Hello Remove autoconf support 2016-01-26 21:29:08 +00:00
InstCombine [PM] Make the AnalysisManager parameter to run methods a reference. 2016-03-11 11:05:24 +00:00
Instrumentation Remove llvm::getDISubprogram in favor of Function::getSubprogram 2016-03-11 02:14:16 +00:00
IPO [PM] Make the AnalysisManager parameter to run methods a reference. 2016-03-11 11:05:24 +00:00
ObjCARC ADT: Remove == and != comparisons between ilist iterators and pointers 2016-02-21 20:39:50 +00:00
Scalar [PM] The order of evaluation of these analyses is actually significant, 2016-03-11 13:26:47 +00:00
Utils Remove llvm::getDISubprogram in favor of Function::getSubprogram 2016-03-11 02:14:16 +00:00
Vectorize [SLP] Add -slp-min-reg-size command line option. 2016-03-10 02:49:47 +00:00
CMakeLists.txt
LLVMBuild.txt