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3 Commits

Author SHA1 Message Date
Matt Arsenault e64c7c7530 Fix missing CHECK-LABELs 
llvm-svn: 191853
 2013-10-02 20:29:00 +00:00
Arnold Schwaighofer f2305e4467 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

llvm-svn: 181667
 2013-05-11 23:04:28 +00:00
Arnold Schwaighofer e78b76fbed LoopVectorize: getConsecutiveVector must respect signed arithmetic 
We were passing an i32 to ConstantInt::get where an i64 was needed and we must
also pass the sign if we pass negatives numbers. The start index passed to
getConsecutiveVector must also be signed.

Should fix PR15882.

llvm-svn: 181286
 2013-05-07 04:37:05 +00:00