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[GISel]: Change how CSE is enabled by default for each pass 

https://reviews.llvm.org/D57178

Now add a hook in TargetPassConfig to query if CSE needs to be
enabled. By default this hook returns false only for O0 opt level but
this can be overridden by the target.
As a consequence of the default of enabled for non O0, a few tests
needed to be updated to not use CSE (by passing in -O0) to the run
line.

reviewed by: arsenm

llvm-svn: 352126
This commit is contained in:
Aditya Nandakumar 2019-01-24 23:11:25 +00:00
parent 9d53cb8f83
commit 3ba0d94bce
33 changed files with 58 additions and 48 deletions
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4
llvm/include/llvm/CodeGen/TargetPassConfig.h
View File

@ -315,6 +315,10 @@ public:
/// when GlobalISel failed and isGlobalISelAbortEnabled is false.
virtual bool reportDiagnosticWhenGlobalISelFallback() const;
/// Check whether continuous CSE should be enabled in GISel passes.
/// By default, it's enabled for non O0 levels.
virtual bool isGISelCSEEnabled() const;
protected:
// Helper to verify the analysis is really immutable.
void setOpt(bool &Opt, bool Val);

7
llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
View File

@ -1709,9 +1709,10 @@ bool IRTranslator::runOnMachineFunction(MachineFunction &CurMF) {
// Set the CSEConfig and run the analysis.
GISelCSEInfo *CSEInfo = nullptr;
TPC = &getAnalysis<TargetPassConfig>();
bool IsO0 = TPC->getOptLevel() == CodeGenOpt::Level::None;
// Disable CSE for O0.
bool EnableCSE = !IsO0 && EnableCSEInIRTranslator;
bool EnableCSE = EnableCSEInIRTranslator.getNumOccurrences()
? EnableCSEInIRTranslator
: TPC->isGISelCSEEnabled();
if (EnableCSE) {
EntryBuilder = make_unique<CSEMIRBuilder>(CurMF);
std::unique_ptr<CSEConfig> Config = make_unique<CSEConfig>();

7
llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
View File

@ -161,9 +161,10 @@ bool Legalizer::runOnMachineFunction(MachineFunction &MF) {
}
std::unique_ptr<MachineIRBuilder> MIRBuilder;
GISelCSEInfo *CSEInfo = nullptr;
bool IsO0 = TPC.getOptLevel() == CodeGenOpt::Level::None;
// Disable CSE for O0.
bool EnableCSE = !IsO0 && EnableCSEInLegalizer;
bool EnableCSE = EnableCSEInLegalizer.getNumOccurrences()
? EnableCSEInLegalizer
: TPC.isGISelCSEEnabled();
if (EnableCSE) {
MIRBuilder = make_unique<CSEMIRBuilder>();
std::unique_ptr<CSEConfig> Config = make_unique<CSEConfig>();

4
llvm/lib/CodeGen/TargetPassConfig.cpp
View File

@ -1220,3 +1220,7 @@ bool TargetPassConfig::isGlobalISelAbortEnabled() const {
bool TargetPassConfig::reportDiagnosticWhenGlobalISelFallback() const {
return TM->Options.GlobalISelAbort == GlobalISelAbortMode::DisableWithDiag;
}
bool TargetPassConfig::isGISelCSEEnabled() const {
return getOptLevel() != CodeGenOpt::Level::None;
}

2
llvm/test/CodeGen/AArch64/GlobalISel/call-translator-cse.ll
View File

@ -1,4 +1,4 @@
; RUN: llc -mtriple=aarch64-linux-gnu -O1 -stop-after=irtranslator -enable-cse-in-irtranslator=1 -global-isel -verify-machineinstrs %s -o - 2>&1 | FileCheck %s
; RUN: llc -mtriple=aarch64-linux-gnu -stop-after=irtranslator -enable-cse-in-irtranslator=1 -global-isel -verify-machineinstrs %s -o - 2>&1 | FileCheck %s
; CHECK-LABEL: name: test_split_struct
; CHECK: [[ADDR:%[0-9]+]]:_(p0) = COPY $x0

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-cmp.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
---
name: test_icmp
body: |

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-div.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
---
name: test_div
body: |

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-ext-cse.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - -enable-cse-in-legalizer=1 -O1 | FileCheck %s
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - -enable-cse-in-legalizer=1 | FileCheck %s
---
name: test_cse_in_legalizer
body: |

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-ext.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
---
name: test_ext
body: |

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store-fewerElts.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -o - -run-pass=legalizer %s | FileCheck %s
# RUN: llc -O0 -march=aarch64 -o - -run-pass=legalizer %s | FileCheck %s
---
name: load_v4s32
legalized: false

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store-s128-unaligned.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -o - -run-pass=legalizer %s | FileCheck %s
# RUN: llc -O0 -march=aarch64 -o - -run-pass=legalizer %s | FileCheck %s
---
name: loadstore128_align4
exposesReturnsTwice: false

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-store.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
---
name: test_load

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-phi.mir
View File

@ -1,4 +1,4 @@
# RUN: llc -mtriple=aarch64-unknown-unknown -verify-machineinstrs -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=aarch64-unknown-unknown -verify-machineinstrs -run-pass=legalizer %s -o - | FileCheck %s
--- |
; ModuleID = '/tmp/test.ll'
source_filename = "/tmp/test.ll"

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-rem.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
---
name: test_urem_64
body: |

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-shift.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
---
name: test_shift
body: |

2
llvm/test/CodeGen/AArch64/GlobalISel/legalize-simple.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -march=aarch64 -run-pass=legalizer %s -o - | FileCheck %s
---
name: test_simple
body: |

2
llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-sext.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=fiji -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=amdgcn-mesa-mesa3d -mcpu=fiji -run-pass=legalizer %s -o - | FileCheck %s
---
name: test_sext_s32_to_s64

4
llvm/test/CodeGen/ARM/GlobalISel/arm-legalize-bitcounts.mir
View File

@ -1,5 +1,5 @@
# RUN: llc -mtriple arm-linux-gnueabi -mattr=+v5t -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,CLZ
# RUN: llc -mtriple arm-linux-gnueabi -mattr=-v5t -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,LIBCALLS
# RUN: llc -O0 -mtriple arm-linux-gnueabi -mattr=+v5t -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,CLZ
# RUN: llc -O0 -mtriple arm-linux-gnueabi -mattr=-v5t -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,LIBCALLS
--- |
define void @test_ctlz_s32() { ret void }
define void @test_ctlz_zero_undef_s32() { ret void }

8
llvm/test/CodeGen/ARM/GlobalISel/arm-legalize-divmod.mir
View File

@ -1,7 +1,7 @@
# RUN: llc -mtriple arm-linux-gnueabi -mattr=+hwdiv-arm -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,HWDIV
# RUN: llc -mtriple arm-linux-gnueabi -mattr=-hwdiv-arm -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,SOFT,SOFT-AEABI
# RUN: llc -mtriple arm-linux-gnu -mattr=+hwdiv-arm -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,HWDIV
# RUN: llc -mtriple arm-linux-gnu -mattr=-hwdiv-arm -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,SOFT,SOFT-DEFAULT
# RUN: llc -O0 -mtriple arm-linux-gnueabi -mattr=+hwdiv-arm -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,HWDIV
# RUN: llc -O0 -mtriple arm-linux-gnueabi -mattr=-hwdiv-arm -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,SOFT,SOFT-AEABI
# RUN: llc -O0 -mtriple arm-linux-gnu -mattr=+hwdiv-arm -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,HWDIV
# RUN: llc -O0 -mtriple arm-linux-gnu -mattr=-hwdiv-arm -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,SOFT,SOFT-DEFAULT
--- |
define void @test_sdiv_i32() { ret void }
define void @test_udiv_i32() { ret void }

6
llvm/test/CodeGen/ARM/GlobalISel/arm-legalize-fp.mir
View File

@ -1,6 +1,6 @@
# RUN: llc -mtriple arm-linux-gnueabihf -mattr=+vfp2 -float-abi=hard -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix HARD
# RUN: llc -mtriple arm-linux-gnueabi -mattr=+vfp2,+soft-float -float-abi=soft -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix SOFT -check-prefix SOFT-AEABI
# RUN: llc -mtriple arm-linux-gnu -mattr=+soft-float -float-abi=soft -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix SOFT -check-prefix SOFT-DEFAULT
# RUN: llc -O0 -mtriple arm-linux-gnueabihf -mattr=+vfp2 -float-abi=hard -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix HARD
# RUN: llc -O0 -mtriple arm-linux-gnueabi -mattr=+vfp2,+soft-float -float-abi=soft -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix SOFT -check-prefix SOFT-AEABI
# RUN: llc -O0 -mtriple arm-linux-gnu -mattr=+soft-float -float-abi=soft -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix SOFT -check-prefix SOFT-DEFAULT
--- |
define void @test_frem_float() { ret void }
define void @test_frem_double() { ret void }

6
llvm/test/CodeGen/ARM/GlobalISel/arm-param-lowering.ll
View File

@ -1,7 +1,7 @@
; RUN: llc -mtriple arm-unknown -mattr=+vfp2,+v4t -global-isel -stop-after=irtranslator -verify-machineinstrs %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=ARM -check-prefix=LITTLE
; RUN: llc -mtriple armeb-unknown -mattr=+vfp2,+v4t -global-isel -global-isel-abort=0 -stop-after=irtranslator -verify-machineinstrs %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=ARM -check-prefix=BIG
; RUN: llc -O0 -mtriple arm-unknown -mattr=+vfp2,+v4t -global-isel -stop-after=irtranslator -verify-machineinstrs %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=ARM -check-prefix=LITTLE
; RUN: llc -O0 -mtriple armeb-unknown -mattr=+vfp2,+v4t -global-isel -global-isel-abort=0 -stop-after=irtranslator -verify-machineinstrs %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=ARM -check-prefix=BIG
; XFAIL: armeb
; RUN: llc -mtriple thumb-unknown -mattr=+vfp2,+v6t2 -global-isel -stop-after=irtranslator -verify-machineinstrs %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=LITTLE -check-prefix=THUMB
; RUN: llc -O0 -mtriple thumb-unknown -mattr=+vfp2,+v6t2 -global-isel -stop-after=irtranslator -verify-machineinstrs %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=LITTLE -check-prefix=THUMB
declare arm_aapcscc i32* @simple_reg_params_target(i32, i32*)

4
llvm/test/CodeGen/X86/GlobalISel/callingconv.ll
View File

@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=i386-linux-gnu -mattr=+sse2 -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
; RUN: llc -mtriple=x86_64-linux-gnu -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
; RUN: llc -enable-cse-in-irtranslator=0 -enable-cse-in-legalizer=0 -mtriple=i386-linux-gnu -mattr=+sse2 -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
; RUN: llc -enable-cse-in-irtranslator=0 -enable-cse-in-legalizer=0 -mtriple=x86_64-linux-gnu -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
define i32 @test_ret_i32() {
; X32-LABEL: test_ret_i32:

4
llvm/test/CodeGen/X86/GlobalISel/irtranslator-callingconv.ll
View File

@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
; RUN: llc -mtriple=i386-linux-gnu -mattr=+sse2 -global-isel -stop-after=irtranslator < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
; RUN: llc -mtriple=x86_64-linux-gnu -global-isel -stop-after=irtranslator < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
; RUN: llc -O0 -mtriple=i386-linux-gnu -mattr=+sse2 -global-isel -stop-after=irtranslator < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
; RUN: llc -O0 -mtriple=x86_64-linux-gnu -global-isel -stop-after=irtranslator < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
@a1_8bit = external global i8
@a7_8bit = external global i8

4
llvm/test/CodeGen/X86/GlobalISel/legalize-add.mir
View File

@ -1,6 +1,6 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
# RUN: llc -mtriple=i386-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
# RUN: llc -O0 -mtriple=i386-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
--- |
define void @test_add_i1() { ret void}

2
llvm/test/CodeGen/X86/GlobalISel/legalize-and-scalar.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
--- |
define i1 @test_and_i1() {

2
llvm/test/CodeGen/X86/GlobalISel/legalize-ext-x86-64.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
--- |
define i64 @test_sext_i1(i8 %a) {

4
llvm/test/CodeGen/X86/GlobalISel/legalize-memop-scalar.mir
View File

@ -1,6 +1,6 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
# RUN: llc -mtriple=i386-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
# RUN: llc -O0 -mtriple=i386-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
--- |
define void @test_memop_s8tos32() {

2
llvm/test/CodeGen/X86/GlobalISel/legalize-mul-scalar.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
--- |
define void @test_mul_i1() { ret void}

2
llvm/test/CodeGen/X86/GlobalISel/legalize-or-scalar.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
--- |
define i1 @test_or_i1() {

2
llvm/test/CodeGen/X86/GlobalISel/legalize-sub.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
--- |

4
llvm/test/CodeGen/X86/GlobalISel/legalize-trunc.mir
View File

@ -1,6 +1,6 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=i386-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
# RUN: llc -O0 -mtriple=i386-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
--- |
define void @trunc_check() {
ret void

2
llvm/test/CodeGen/X86/GlobalISel/legalize-xor-scalar.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s
--- |
define i1 @test_xor_i1() {

2
llvm/test/CodeGen/X86/GlobalISel/x86_64-legalize-sitofp.mir
View File

@ -1,5 +1,5 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer -verify-machineinstrs %s -o - | FileCheck %s
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer -verify-machineinstrs %s -o - | FileCheck %s
--- |
; ModuleID = 'sitofp.ll'