Shuxin Yang 7d72cf892e This change is to implement following rules under the condition C_A and/or C_R ... --------------------------------------------------------------------------- C_A: reassociation is allowed C_R: reciprocal of a constant C is appropriate, which means - 1/C is exact, or - reciprocal is allowed and 1/C is neither a special value nor a denormal. ----------------------------------------------------------------------------- rule1: (X/C1) / C2 => X / (C2*C1) (if C_A) => X * (1/(C2*C1)) (if C_A && C_R) rule 2: X*C1 / C2 => X * (C1/C2) if C_A rule 3: (X/Y)/Z = > X/(Y*Z) (if C_A && at least one of Y and Z is symbolic value) rule 4: Z/(X/Y) = > (Z*Y)/X (similar to rule3) rule 5: C1/(X*C2) => (C1/C2) / X (if C_A) rule 6: C1/(X/C2) => (C1*C2) / X (if C_A) rule 7: C1/(C2/X) => (C1/C2) * X (if C_A) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172488 91177308-0d34-0410-b5e6-96231b3b80d8		2013-01-14 22:48:41 +00:00
..
CMakeLists.txt	llvm/lib: [CMake] Add explicit dependency to intrinsics_gen.	2012-06-24 13:32:01 +00:00
InstCombine.h	Consider expression "0.0 - X" as the negation of X if	2013-01-09 00:13:41 +00:00
InstCombineAddSub.cpp	Fix Casting Bug	2013-01-14 21:04:40 +00:00
InstCombineAndOrXor.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombineCalls.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombineCasts.cpp	Fix typo in comment.	2013-01-14 20:56:10 +00:00
InstCombineCompares.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombineLoadStoreAlloca.cpp	switch from pointer equality comparison to MDNode::getMostGenericTBAA	2013-01-05 16:44:07 +00:00
InstCombineMulDivRem.cpp	This change is to implement following rules under the condition C_A and/or C_R	2013-01-14 22:48:41 +00:00
InstCombinePHI.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombineSelect.cpp	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
InstCombineShifts.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombineSimplifyDemanded.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombineVectorOps.cpp	[InstCombine] Teach InstCombine how to handle an obfuscated splat.	2012-10-16 21:29:38 +00:00
InstCombineWorklist.h	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstructionCombining.cpp	Consider expression "0.0 - X" as the negation of X if	2013-01-09 00:13:41 +00:00
LLVMBuild.txt	LLVMBuild: Remove trailing newline, which irked me.	2011-12-12 19:48:00 +00:00
Makefile	make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.	2010-01-24 20:43:08 +00:00