Arnold Schwaighofer 08a0e8f8db LoopVectorizer: integer division is not a reduction operation ... Don't classify idiv/udiv as a reduction operation. Integer division is lossy. For example : (1 / 2) * 4 != 4/2. Example: int a[] = { 2, 5, 2, 2} int x = 80; for() x /= a[i]; Scalar: x /= 2 // = 40 x /= 5 // = 8 x /= 2 // = 4 x /= 2 // = 2 Vectorized: <80, 1> / <2,5> //= <40,0> <40, 0> / <2,2> //= <20,0> 20*0 = 0 radar://13640654 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179381 91177308-0d34-0410-b5e6-96231b3b80d8		2013-04-12 15:15:19 +00:00
..
BBVectorize.cpp
CMakeLists.txt
LLVMBuild.txt
LoopVectorize.cpp	LoopVectorizer: integer division is not a reduction operation	2013-04-12 15:15:19 +00:00
Makefile
SLPVectorizer.cpp	Make the SLP store-merger less paranoid about function calls. We check for function calls when we check if it is safe to sink instructions.	2013-04-10 19:41:36 +00:00
Vectorize.cpp	Rename the C function to create a SLPVectorizerPass to something sane and expose it in the header file.	2013-04-11 11:36:36 +00:00
VecUtils.cpp	We require DataLayout for analyzing the size of stores.	2013-04-10 18:57:27 +00:00
VecUtils.h