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2f69ee6563
This adds a cost model that takes into account the total number of machine instructions to be removed from each region, the number of instructions added by adding a new function with a set of instructions, and the instructions added by handling arguments. Tests not adding flags: llvm/test/Transforms/IROutliner/outlining-cost-model.ll Reviewers: jroelofs, paquette Differential Revision: https://reviews.llvm.org/D87299
42 lines
1.1 KiB
LLVM
42 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -verify -iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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@global1 = global i32 1, align 4
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@global2 = global i32 2, align 4
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; This test looks at the globals in the regions, and if it they are the
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; same it outlines the region without elevating the globals to arguments.
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define void @outline_globals1() {
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; CHECK-LABEL: @outline_globals1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @outlined_ir_func_0()
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; CHECK-NEXT: ret void
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;
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entry:
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%0 = load i32, i32* @global1
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%1 = load i32, i32* @global2
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%2 = add i32 %0, %1
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ret void
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}
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define void @outline_globals2() {
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; CHECK-LABEL: @outline_globals2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @outlined_ir_func_0()
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; CHECK-NEXT: ret void
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;
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entry:
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%0 = load i32, i32* @global1
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%1 = load i32, i32* @global2
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%2 = add i32 %0, %1
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ret void
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}
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; CHECK: define internal void @outlined_ir_func_0()
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; CHECK: entry_to_outline:
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; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* @global1, align 4
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; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* @global2, align 4
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; CHECK-NEXT: [[ADD:%.*]] = add i32 [[TMP1]], [[TMP2]]
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