diff options
Diffstat (limited to 'lib/Transforms/Scalar/LoopStrengthReduce.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/LoopStrengthReduce.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp index 15b1506700..3a71d27977 100644 --- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -7,8 +7,15 @@ // //===----------------------------------------------------------------------===// // +// This transformation analyzes and transforms the induction variables (and +// computations derived from them) into forms suitable for efficient execution +// on the target. +// // This pass performs a strength reduction on array references inside loops that -// have as one or more of their components the loop induction variable. +// have as one or more of their components the loop induction variable, it +// rewrites expressions to take advantage of scaled-index addressing modes +// available on the target, and it performs a variety of other optimizations +// related to loop induction variables. // //===----------------------------------------------------------------------===// |