Arnold Schwaighofer 9b5d70f076 LoopVectorize: Use the widest induction variable type ...

Use the widest induction type encountered for the cannonical induction variable.

We used to turn the following loop into an empty loop because we used i8 as
induction variable type and truncated 1024 to 0 as trip count.

int a[1024];
void fail() {
  int reverse_induction = 1023;
  unsigned char forward_induction = 0;
  while ((reverse_induction) >= 0) {
    forward_induction++;
    a[reverse_induction] = forward_induction;
    --reverse_induction;
  }
}

radar://13862901

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181667 91177308-0d34-0410-b5e6-96231b3b80d8

2013-05-11 23:04:28 +00:00

..

BBVectorize.cpp

BBVectorize: Fixup debugging statements

2013-03-10 20:57:42 +00:00

CMakeLists.txt

Add support for bottom-up SLP vectorization infrastructure.

2013-04-09 19:44:35 +00:00

LLVMBuild.txt

…

LoopVectorize.cpp

LoopVectorize: Use the widest induction variable type

2013-05-11 23:04:28 +00:00

Makefile

…

SLPVectorizer.cpp

Add a debug print

2013-05-10 22:56:18 +00:00

Vectorize.cpp

This patch breaks up Wrap.h so that it does not have to include all of

2013-05-01 20:59:00 +00:00

VecUtils.cpp

SLPVectorizer: Add support for trees with external users.

2013-05-10 22:59:33 +00:00

VecUtils.h

SLPVectorizer: Add support for trees with external users.

2013-05-10 22:59:33 +00:00