Wei Mi e32bfe25a3 [SCEV] Try to reuse existing value during SCEV expansion ...

Current SCEV expansion will expand SCEV as a sequence of operations
and doesn't utilize the value already existed. This will introduce
redundent computation which may not be cleaned up throughly by
following optimizations.

This patch introduces an ExprValueMap which is a map from SCEV to the
set of equal values with the same SCEV. When a SCEV is expanded, the
set of values is checked and reused whenever possible before generating
a sequence of operations.

Differential Revision: http://reviews.llvm.org/D12090



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259662 91177308-0d34-0410-b5e6-96231b3b80d8

2016-02-03 17:05:12 +00:00

..

BBVectorize.cpp

Vectorize: Remove implicit ilist iterator conversions, NFC

2015-10-19 22:06:09 +00:00

CMakeLists.txt

Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.

2015-02-11 03:28:02 +00:00

LLVMBuild.txt

Update libdeps since TLI was moved from Target to Analysis in r226078.

2015-01-15 05:21:00 +00:00

LoopVectorize.cpp

[SCEV] Try to reuse existing value during SCEV expansion

2016-02-03 17:05:12 +00:00

SLPVectorizer.cpp

Reapply commit r258404 with fix.

2016-02-01 13:38:29 +00:00

Vectorize.cpp

[PM] Remove the old 'PassManager.h' header file at the top level of

2015-02-13 10:01:29 +00:00