| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | [LV] Remove constant restriction for vector phi creation | Matthew Simpson | 2017-02-17 | 1 | -12/+89 |
| | | | | | | | | | | | | | We previously only created a vector phi node for an induction variable if its step had a constant integer type. However, the step actually only needs to be loop-invariant. We only handle inductions having loop-invariant steps, so this patch should enable vector phi node creation for all integer induction variables that will be vectorized. Differential Revision: https://reviews.llvm.org/D29956 llvm-svn: 295456 | ||||
| * | [LoopVectorize] Handling induction variable with non-constant step. | Elena Demikhovsky | 2016-05-10 | 1 | -0/+124 |
| Allow vectorization when the step is a loop-invariant variable. This is the loop example that is getting vectorized after the patch: int int_inc; int bar(int init, int *restrict A, int N) { int x = init; for (int i=0;i<N;i++){ A[i] = x; x += int_inc; } return x; } "x" is an induction variable with *loop-invariant* step. But it is not a primary induction. Primary induction variable with non-constant step is not handled yet. Differential Revision: http://reviews.llvm.org/D19258 llvm-svn: 269023 | |||||

