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| author | Tom Stellard <thomas.stellard@amd.com> | 2013-07-27 00:01:07 +0000 |
|---|---|---|
| committer | Tom Stellard <thomas.stellard@amd.com> | 2013-07-27 00:01:07 +0000 |
| commit | 57e6b2d1f3de0bf459e96f7038e692d624f7e580 (patch) | |
| tree | 42204d51445bcb178a24fa07fe9da2d1d22818ff /include/llvm/Transforms | |
| parent | 018696db4587dc6a0d8081d0627543f5c08b6c97 (diff) | |
| download | external_llvm-57e6b2d1f3de0bf459e96f7038e692d624f7e580.zip external_llvm-57e6b2d1f3de0bf459e96f7038e692d624f7e580.tar.gz external_llvm-57e6b2d1f3de0bf459e96f7038e692d624f7e580.tar.bz2 | |
SimplifyCFG: Use parallel-and and parallel-or mode to consolidate branch conditions
Merge consecutive if-regions if they contain identical statements.
Both transformations reduce number of branches. The transformation
is guarded by a target-hook, and is currently enabled only for +R600,
but the correctness has been tested on X86 target using a variety of
CPU benchmarks.
Patch by: Mei Ye
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187278 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Transforms')
| -rw-r--r-- | include/llvm/Transforms/Scalar.h | 2 | ||||
| -rw-r--r-- | include/llvm/Transforms/Utils/Local.h | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/include/llvm/Transforms/Scalar.h b/include/llvm/Transforms/Scalar.h index a327dff..b52c327 100644 --- a/include/llvm/Transforms/Scalar.h +++ b/include/llvm/Transforms/Scalar.h @@ -196,7 +196,7 @@ FunctionPass *createJumpThreadingPass(); // CFGSimplification - Merge basic blocks, eliminate unreachable blocks, // simplify terminator instructions, etc... // -FunctionPass *createCFGSimplificationPass(); +FunctionPass *createCFGSimplificationPass(bool IsTargetAware = false); //===----------------------------------------------------------------------===// // diff --git a/include/llvm/Transforms/Utils/Local.h b/include/llvm/Transforms/Utils/Local.h index 2678250..ec2ab2a 100644 --- a/include/llvm/Transforms/Utils/Local.h +++ b/include/llvm/Transforms/Utils/Local.h @@ -39,6 +39,7 @@ class DataLayout; class TargetLibraryInfo; class TargetTransformInfo; class DIBuilder; +class AliasAnalysis; template<typename T> class SmallVectorImpl; @@ -136,7 +137,7 @@ bool EliminateDuplicatePHINodes(BasicBlock *BB); /// the basic block that was pointed to. /// bool SimplifyCFG(BasicBlock *BB, const TargetTransformInfo &TTI, - const DataLayout *TD = 0); + const DataLayout *TD = 0, AliasAnalysis *AA = 0); /// FoldBranchToCommonDest - If this basic block is ONLY a setcc and a branch, /// and if a predecessor branches to us and one of our successors, fold the |