81d3ac0cf2
Using the similarity found from the IRSimilarity Identifier, we take regions with structural similarity, and deduplicate them into a separate function. The Code Extractor is able to provide most of this functionality. For simplicity, we start by only outlining regions with a single entry and single exit branch, this reduces the complexity in handling phi nodes outside the region, and handling many sets of outputs for each of the different exit blocks. Reviewer: paquette Differential Revision: https://reviews.llvm.org/D106990
53 lines
1.4 KiB
LLVM
53 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs
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; RUN: opt -S -verify -iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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; This checks that we are able to outline exactly the same structure without
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; any other items to outline.
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define void @outline_outputs1() #0 {
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entry:
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br label %next
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next:
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br label %next2
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next2:
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br label %next
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next3:
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%a = alloca i32, align 4
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br label %next4
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next4:
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br label %next3
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next5:
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br label %next6
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next6:
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%b = alloca i32, align 4
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ret void
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}
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; CHECK-LABEL: @outline_outputs1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[NEXT:%.*]]
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; CHECK: next:
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; CHECK-NEXT: call void @outlined_ir_func_0()
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; CHECK-NEXT: br label [[NEXT]]
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; CHECK: next3:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @outlined_ir_func_0()
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; CHECK-NEXT: br label [[NEXT3:%.*]]
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; CHECK: next5:
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; CHECK-NEXT: br label [[NEXT6:%.*]]
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; CHECK: next6:
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; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
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; CHECK-NEXT: ret void
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;
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;
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; CHECK: define internal void @outlined_ir_func_0(
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; CHECK: newFuncRoot:
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; CHECK-NEXT: br label [[NEXT_TO_OUTLINE:%.*]]
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; CHECK: next_to_outline:
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; CHECK-NEXT: br label [[NEXT2:%.*]]
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; CHECK: next2:
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; CHECK-NEXT: br label [[NEXT_EXITSTUB:%.*]]
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; CHECK: next.exitStub:
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; CHECK-NEXT: ret void
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;
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