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2c6ef18647
This adds functionality to the outliner that allows targets to specify certain functions that should be outlined from by default. If a target supports default outlining, then it specifies that in its TargetOptions. In the case that it does, and the user hasn't specified that they *never* want to outline, the outliner will be added to the pass pipeline and will run on those default functions. This is a preliminary patch for turning the outliner on by default under -Oz for AArch64. https://reviews.llvm.org/D48776 llvm-svn: 336040
48 lines
1.6 KiB
LLVM
48 lines
1.6 KiB
LLVM
; REQUIRES: asserts
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; RUN: llc %s -debug-pass=Structure -verify-machineinstrs \
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; RUN: --debug-only=machine-outliner -enable-machine-outliner=always \
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; RUN: -mtriple arm64---- -o /dev/null 2>&1 \
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; RUN: | FileCheck %s -check-prefix=ALWAYS
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; RUN: llc %s -debug-pass=Structure -verify-machineinstrs \
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; RUN: --debug-only=machine-outliner -enable-machine-outliner \
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; RUN: -mtriple arm64---- -o /dev/null 2>&1 \
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; RUN: | FileCheck %s -check-prefix=ENABLE
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; RUN: llc %s -debug-pass=Structure -verify-machineinstrs \
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; RUN: -enable-machine-outliner=never -mtriple arm64---- -o /dev/null 2>&1 \
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; RUN: | FileCheck %s -check-prefix=NEVER
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; RUN: llc %s -debug-pass=Structure -verify-machineinstrs \
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; RUN: -mtriple arm64---- -o /dev/null 2>&1 \
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; RUN: | FileCheck %s -check-prefix=NOT-ADDED
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; RUN: llc %s -O=0 -debug-pass=Structure -verify-machineinstrs \
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; RUN: -mtriple arm64---- -o /dev/null 2>&1 \
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; RUN: | FileCheck %s -check-prefix=OPTNONE
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; Make sure that the outliner is added to the pass pipeline only when the
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; appropriate flags/settings are set. Make sure it isn't added otherwise.
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;
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; Cases where it should be added:
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; * -enable-machine-outliner
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; * -enable-machine-outliner=always
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;
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; Cases where it should not be added:
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; * -O0 or equivalent
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; * -enable-machine-outliner is not passed
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; * -enable-machine-outliner=never is passed
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; ALWAYS: Machine Outliner
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; ALWAYS: Machine Outliner: Running on all functions
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; ENABLE: Machine Outliner
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; ENABLE: Machine Outliner: Running on all functions
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; NEVER-NOT: Machine Outliner
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; NOT-ADDED-NOT: Machine Outliner
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; OPTNONE-NOT: Machine Outliner
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define void @foo() {
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ret void;
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}
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