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| author | Sebastian Pop <spop@codeaurora.org> | 2014-05-27 22:41:51 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@codeaurora.org> | 2014-05-27 22:41:51 +0000 |
| commit | 79facc9e2921ee9d18d1adc94d1d03562775f431 (patch) | |
| tree | f3c6018054f8bfc3b505a59f22a5c9359c41b011 /include | |
| parent | 421b2c571cfbd4cad3a6b7834792ae45c87d9c64 (diff) | |
| download | llvm-79facc9e2921ee9d18d1adc94d1d03562775f431.tar.gz llvm-79facc9e2921ee9d18d1adc94d1d03562775f431.tar.bz2 llvm-79facc9e2921ee9d18d1adc94d1d03562775f431.tar.xz | |
remove BasePointer before delinearizing
No functional change is intended: instead of relying on the delinearization to
come up with the base pointer as a remainder of the divisions in the
delinearization, we just compute it from the array access and use that value.
We substract the base pointer from the SCEV to be delinearized and that
simplifies the work of the delinearizer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209692 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Analysis/ScalarEvolutionExpressions.h | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/include/llvm/Analysis/ScalarEvolutionExpressions.h b/include/llvm/Analysis/ScalarEvolutionExpressions.h index b468fcd025..01b034f8a0 100644 --- a/include/llvm/Analysis/ScalarEvolutionExpressions.h +++ b/include/llvm/Analysis/ScalarEvolutionExpressions.h @@ -362,14 +362,12 @@ namespace llvm { SmallVectorImpl<const SCEV *> &Terms) const; /// Return in Subscripts the access functions for each dimension in Sizes. - const SCEV * - computeAccessFunctions(ScalarEvolution &SE, - SmallVectorImpl<const SCEV *> &Subscripts, - SmallVectorImpl<const SCEV *> &Sizes) const; + void computeAccessFunctions(ScalarEvolution &SE, + SmallVectorImpl<const SCEV *> &Subscripts, + SmallVectorImpl<const SCEV *> &Sizes) const; /// Split this SCEVAddRecExpr into two vectors of SCEVs representing the - /// subscripts and sizes of an array access. Returns the remainder of the - /// delinearization that is the offset start of the array. + /// subscripts and sizes of an array access. /// /// The delinearization is a 3 step process: the first two steps compute the /// sizes of each subscript and the third step computes the access functions @@ -432,10 +430,10 @@ namespace llvm { /// The subscript of the outermost dimension is the Quotient: [j+k]. /// /// Overall, we have: A[][n][m], and the access function: A[j+k][2i][5i]. - const SCEV *delinearize(ScalarEvolution &SE, - SmallVectorImpl<const SCEV *> &Subscripts, - SmallVectorImpl<const SCEV *> &Sizes, - const SCEV *ElementSize) const; + void delinearize(ScalarEvolution &SE, + SmallVectorImpl<const SCEV *> &Subscripts, + SmallVectorImpl<const SCEV *> &Sizes, + const SCEV *ElementSize) const; }; //===--------------------------------------------------------------------===// |