66abe64466
This pass is intended to spot cases where we can do better than the default bufferization and to rewrite those specific cases. Then the default bufferization (bufferize-hlfir pass) can handle everything else. The transformation added in this patch rewrites simple element-wise updates to an array to a do-loop modifying the array in place instead of creating and assigning an array temporary. See the RFC at https://discourse.llvm.org/t/rfc-hlfir-optimized-bufferization-for-elemental-array-updates This patch gets the improvement to exchange2 but not the improvement to cam4 described in the RFC. I think the cam4 improvement will require better alias analysis. I aim to follow up to fix this in a later patch. With changes since the RFC, the pass improves polyhedron channel2 by about 52%. Depends on: D156805 D157718 D157626 Differential Revision: https://reviews.llvm.org/D157107
81 lines
2.6 KiB
Plaintext
81 lines
2.6 KiB
Plaintext
// RUN: tco %s | FileCheck %s
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// RUN: tco %s --mlir-pass-statistics --mlir-pass-statistics-display=pipeline 2>&1 | FileCheck %s --check-prefix=PASSES
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// REQUIRES: asserts
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// Check that tco is working with a basic test.
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// Also check the passes in the default pipeline.
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func.func @_QQmain() {
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return
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}
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// CHECK: ; ModuleID = 'FIRModule'
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// CHECK-LABEL: define void @_QQmain()
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// CHECK: ret void
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// PASSES: Pass statistics report
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// PASSES: Canonicalizer
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// PASSES-NEXT: 'func.func' Pipeline
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// PASSES-NEXT: SimplifyHLFIRIntrinsics
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// PASSES-NEXT: InlineElementals
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// PASSES-NEXT: Canonicalizer
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// PASSES-NEXT: CSE
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// PASSES-NEXT: (S) 0 num-cse'd - Number of operations CSE'd
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// PASSES-NEXT: (S) 0 num-dce'd - Number of operations DCE'd
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// PASSES-NEXT: 'func.func' Pipeline
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// PASSES-NEXT: OptimizedBufferization
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// PASSES-NEXT: LowerHLFIROrderedAssignments
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// PASSES-NEXT: LowerHLFIRIntrinsics
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// PASSES-NEXT: BufferizeHLFIR
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// PASSES-NEXT: ConvertHLFIRtoFIR
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// PASSES-NEXT: CSE
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// PASSES-NEXT: (S) 0 num-cse'd - Number of operations CSE'd
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// PASSES-NEXT: (S) 0 num-dce'd - Number of operations DCE'd
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// PASSES-NEXT: 'func.func' Pipeline
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// PASSES-NEXT: ArrayValueCopy
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// PASSES-NEXT: CharacterConversion
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// PASSES-NEXT: Canonicalizer
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// PASSES-NEXT: SimplifyRegionLite
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// PASSES-NEXT: SimplifyIntrinsics
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// PASSES-NEXT: AlgebraicSimplification
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// PASSES-NEXT: CSE
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// PASSES-NEXT: (S) 0 num-cse'd - Number of operations CSE'd
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// PASSES-NEXT: (S) 0 num-dce'd - Number of operations DCE'd
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// PASSES-NEXT: 'func.func' Pipeline
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// PASSES-NEXT: MemoryAllocationOpt
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// PASSES-NEXT: Inliner
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// PASSES-NEXT: SimplifyRegionLite
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// PASSES-NEXT: CSE
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// PASSES-NEXT: (S) 0 num-cse'd - Number of operations CSE'd
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// PASSES-NEXT: (S) 0 num-dce'd - Number of operations DCE'd
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// PASSES-NEXT: 'func.func' Pipeline
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// PASSES-NEXT: PolymorphicOpConversion
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// PASSES-NEXT: CFGConversion
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// PASSES-NEXT: SCFToControlFlow
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// PASSES-NEXT: Canonicalizer
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// PASSES-NEXT: SimplifyRegionLite
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// PASSES-NEXT: CSE
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// PASSES-NEXT: (S) 0 num-cse'd - Number of operations CSE'd
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// PASSES-NEXT: (S) 0 num-dce'd - Number of operations DCE'd
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// PASSES-NEXT: BoxedProcedurePass
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// PASSES-NEXT: Pipeline Collection : ['fir.global', 'func.func']
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// PASSES-NEXT: 'fir.global' Pipeline
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// PASSES-NEXT: AbstractResultOnGlobalOpt
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// PASSES-NEXT: 'func.func' Pipeline
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// PASSES-NEXT: AbstractResultOnFuncOpt
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// PASSES-NEXT: CodeGenRewrite
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// PASSES-NEXT: (S) 0 num-dce'd - Number of operations eliminated
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// PASSES-NEXT: TargetRewrite
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// PASSES-NEXT: FIRToLLVMLowering
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// PASSES-NEXT: LLVMIRLoweringPass
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