5b66b6a32a
Composite pass allows to run sequence of passes in the loop until fixed point or maximum number of iterations is reached. The usual candidates are canonicalize+CSE as canonicalize can open more opportunities for CSE and vice-versa.
27 lines
883 B
MLIR
27 lines
883 B
MLIR
// RUN: mlir-opt %s --log-actions-to=- --test-composite-fixed-point-pass -split-input-file | FileCheck %s
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// RUN: mlir-opt %s --log-actions-to=- --composite-fixed-point-pass='name=TestCompositePass pipeline=any(canonicalize,cse)' -split-input-file | FileCheck %s
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// CHECK-LABEL: running `TestCompositePass`
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// CHECK: running `Canonicalizer`
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// CHECK: running `CSE`
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// CHECK-NOT: running `Canonicalizer`
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// CHECK-NOT: running `CSE`
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func.func @test() {
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return
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}
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// -----
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// CHECK-LABEL: running `TestCompositePass`
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// CHECK: running `Canonicalizer`
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// CHECK: running `CSE`
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// CHECK: running `Canonicalizer`
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// CHECK: running `CSE`
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// CHECK-NOT: running `Canonicalizer`
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// CHECK-NOT: running `CSE`
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func.func @test() {
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// this constant will be canonicalized away, causing another pass iteration
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%0 = arith.constant 1.5 : f32
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return
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}
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