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llvm-mirror/lib/Transforms
Chandler Carruth efe46ecfb3 [unroll] Change the other worklist in the unroll analyzer to be a set
vector.

In addition to dramatically reducing the work required for contrived
example loops, this also has to correct some serious latent bugs in the
cost computation. Previously, we might add an instruction onto the
worklist once for every load which it used and was simplified. Then we
would visit it many times and accumulate "savings" each time.

I mean, fortunately this couldn't matter for things like calls with 100s
of operands, but even for binary operators this code seems like it must
be double counting the savings.

I just noticed this by inspection and due to the runtime problems it can
introduce, I don't have any test cases for cases where the cost produced
by this routine is unacceptable.

llvm-svn: 229059
2015-02-13 04:27:50 +00:00
..
Hello [CMake] Add LLVM_LINK_COMPONENTS to loadable modules, LLVMHello and BugpointPasses, on Win32. 2014-07-13 13:36:48 +00:00
InstCombine [IC] Fix a bug with the instcombine canonicalizing of loads and 2015-02-13 02:30:01 +00:00
Instrumentation tsan: do not instrument not captured values 2015-02-12 09:55:28 +00:00
IPO DeadArgElim: aggregate Return assessment properly. 2015-02-11 23:13:11 +00:00
ObjCARC Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects. 2015-02-11 03:28:02 +00:00
Scalar [unroll] Change the other worklist in the unroll analyzer to be a set 2015-02-13 04:27:50 +00:00
Utils [SimplifyCFG] Swap to using TargetTransformInfo for cost 2015-02-11 12:15:41 +00:00
Vectorize [slp] Fix a nasty bug in the SLP vectorizer that Joerg pointed out. 2015-02-12 02:30:56 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile