Leporacanthicus updated this revision to Diff 511416.
Leporacanthicus added a comment.
Rebase only
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D141307/new/
https://reviews.llvm.org/D141307
Files:
clang/include/clang/Driver/Options.td
clang/lib/Driver/ToolChains/Flang.cpp
flang/include/flang/Frontend/CodeGenOptions.def
flang/include/flang/Tools/CLOptions.inc
flang/lib/Frontend/CompilerInvocation.cpp
flang/lib/Frontend/FrontendActions.cpp
flang/test/Driver/driver-help-hidden.f90
flang/test/Driver/driver-help.f90
flang/test/Driver/frontend-forwarding.f90
flang/test/Driver/version-loops.f90
Index: flang/test/Driver/version-loops.f90
===================================================================
--- /dev/null
+++ flang/test/Driver/version-loops.f90
@@ -0,0 +1,54 @@
+! Test that flang-new forwards the -f{no-,}version-loops-for-stride
+! options corredly to flang-new -fc1 for different variants of optimisation
+! and explicit flags.
+
+! RUN: %flang -fsyntax-only -### %s -o %t 2>&1 \
+! RUN: -O3 \
+! RUN: | FileCheck %s
+
+! RUN: %flang -fsyntax-only -### %s -o %t 2>&1 \
+! RUN: -O2 \
+! RUN: | FileCheck %s --check-prefix=CHECK-O2
+
+! RUN: %flang -fsyntax-only -### %s -o %t 2>&1 \
+! RUN: -O2 -fversion-loops-for-stride \
+! RUN: | FileCheck %s --check-prefix=CHECK-O2-with
+
+! RUN: %flang -fsyntax-only -### %s -o %t 2>&1 \
+! RUN: -O4 \
+! RUN: | FileCheck %s --check-prefix=CHECK-O4
+
+! RUN: %flang -fsyntax-only -### %s -o %t 2>&1 \
+! RUN: -Ofast \
+! RUN: | FileCheck %s --check-prefix=CHECK-Ofast
+
+! RUN: %flang -fsyntax-only -### %s -o %t 2>&1 \
+! RUN: -Ofast -fno-version-loops-for-stride \
+! RUN: | FileCheck %s --check-prefix=CHECK-Ofast-no
+
+! RUN: %flang -fsyntax-only -### %s -o %t 2>&1 \
+! RUN: -O3 -fno-version-loops-for-stride \
+! RUN: | FileCheck %s --check-prefix=CHECK-O3-no
+
+! CHECK: "-fversion-loops-for-stride"
+! CHECK: "-O3"
+
+! CHECK-O2-NOT: "-fversion-loops-for-stride"
+! CHECK-O2: "-O2"
+
+! CHECK-O2-with: "-fversion-loops-for-stride"
+! CHECK-O2-with: "-O2"
+
+! CHECK-O4: "-fversion-loops-for-stride"
+! CHECK-O4: "-O3"
+
+! CHECK-Ofast: "-ffast-math"
+! CHECK-Ofast: "-fversion-loops-for-stride"
+! CHECK-Ofast: "-O3"
+
+! CHECK-Ofast-no: "-ffast-math"
+! CHECK-Ofast-no-NOT: "-fversion-loops-for-stride"
+! CHECK-Ofast-no: "-O3"
+
+! CHECK-O3-no-NOT: "-fversion-loops-for-stride"
+! CHECK-O3-no: "-O3"
Index: flang/test/Driver/frontend-forwarding.f90
===================================================================
--- flang/test/Driver/frontend-forwarding.f90
+++ flang/test/Driver/frontend-forwarding.f90
@@ -15,6 +15,8 @@
! RUN: -fassociative-math \
! RUN: -freciprocal-math \
! RUN: -fpass-plugin=Bye%pluginext \
+! RUN: -fversion-loops-for-stride \
+! RUN: -mllvm -print-before-all\
! RUN: -mllvm -print-before-all \
! RUN: -save-temps=obj \
! RUN: -P \
@@ -34,5 +36,6 @@
! CHECK: "-freciprocal-math"
! CHECK: "-fconvert=little-endian"
! CHECK: "-fpass-plugin=Bye
+! CHECK: "-fversion-loops-for-stride"
! CHECK: "-mllvm" "-print-before-all"
! CHECK: "-save-temps=obj"
Index: flang/test/Driver/driver-help.f90
===================================================================
--- flang/test/Driver/driver-help.f90
+++ flang/test/Driver/driver-help.f90
@@ -48,6 +48,8 @@
! HELP-NEXT: -fno-integrated-as Disable the integrated assembler
! HELP-NEXT: -fno-signed-zeros Allow optimizations that ignore the sign of floating point zeros
! HELP-NEXT: -fno-stack-arrays Allocate array temporaries on the heap (default)
+! HELP-NEXT: -fno-version-loops-for-stride
+! HELP-NEXT: Do not create unit-strided loops (default)
! HELP-NEXT: -fopenacc Enable OpenACC
! HELP-NEXT: -fopenmp Parse OpenMP pragmas and generate parallel code.
! HELP-NEXT: -fpass-plugin=<dsopath> Load pass plugin from a dynamic shared object file (only with new pass manager).
@@ -55,6 +57,8 @@
! HELP-NEXT: -fstack-arrays Attempt to allocate array temporaries on the stack, no matter their size
! HELP-NEXT: -fsyntax-only Run the preprocessor, parser and semantic analysis stages
! HELP-NEXT: -funderscoring Appends one trailing underscore to external names
+! HELP-NEXT: -fversion-loops-for-stride
+! HELP-NEXT: Create unit-strided versions of loops
! HELP-NEXT: -fxor-operator Enable .XOR. as a synonym of .NEQV.
! HELP-NEXT: -gline-tables-only Emit debug line number tables only
! HELP-NEXT: -g Generate source-level debug information
@@ -143,6 +147,8 @@
! HELP-FC1-NEXT: -fno-reformat Dump the cooked character stream in -E mode
! HELP-FC1-NEXT: -fno-signed-zeros Allow optimizations that ignore the sign of floating point zeros
! HELP-FC1-NEXT: -fno-stack-arrays Allocate array temporaries on the heap (default)
+! HELP-FC1-NEXT: -fno-version-loops-for-stride
+! HELP-FC1-NEXT: Do not create unit-strided loops (default)
! HELP-FC1-NEXT: -fopenacc Enable OpenACC
! HELP-FC1-NEXT: -fopenmp-is-device Generate code only for an OpenMP target device.
! HELP-FC1-NEXT: -fopenmp-target-debug Enable debugging in the OpenMP offloading device RTL
@@ -152,6 +158,8 @@
! HELP-FC1-NEXT: -fstack-arrays Attempt to allocate array temporaries on the stack, no matter their size
! HELP-FC1-NEXT: -fsyntax-only Run the preprocessor, parser and semantic analysis stages
! HELP-FC1-NEXT: -funderscoring Appends one trailing underscore to external names
+! HELP-FC1-NEXT: -fversion-loops-for-stride
+! HELP-FC1-NEXT: Create unit-strided versions of loops
! HELP-FC1-NEXT: -fxor-operator Enable .XOR. as a synonym of .NEQV.
! HELP-FC1-NEXT: -help Display available options
! HELP-FC1-NEXT: -init-only Only execute frontend initialization
Index: flang/test/Driver/driver-help-hidden.f90
===================================================================
--- flang/test/Driver/driver-help-hidden.f90
+++ flang/test/Driver/driver-help-hidden.f90
@@ -52,6 +52,8 @@
! CHECK-NEXT: -fno-integrated-as Disable the integrated assembler
! CHECK-NEXT: -fno-signed-zeros Allow optimizations that ignore the sign of floating point zeros
! CHECK-NEXT: -fno-stack-arrays Allocate array temporaries on the heap (default)
+! CHECK-NEXT: -fno-version-loops-for-stride
+! CHECK-NEXT: Do not create unit-strided loops (default)
! CHECK-NEXT: -fopenacc Enable OpenACC
! CHECK-NEXT: -fopenmp Parse OpenMP pragmas and generate parallel code.
! CHECK-NEXT: -fpass-plugin=<dsopath> Load pass plugin from a dynamic shared object file (only with new pass manager).
@@ -59,6 +61,8 @@
! CHECK-NEXT: -fstack-arrays Attempt to allocate array temporaries on the stack, no matter their size
! CHECK-NEXT: -fsyntax-only Run the preprocessor, parser and semantic analysis stages
! CHECK-NEXT: -funderscoring Appends one trailing underscore to external names
+! CHECK-NEXT: -fversion-loops-for-stride
+! CHECK-NEXT: Create unit-strided versions of loops
! CHECK-NEXT: -fxor-operator Enable .XOR. as a synonym of .NEQV.
! CHECK-NEXT: -gline-tables-only Emit debug line number tables only
! CHECK-NEXT: -g Generate source-level debug information
Index: flang/lib/Frontend/FrontendActions.cpp
===================================================================
--- flang/lib/Frontend/FrontendActions.cpp
+++ flang/lib/Frontend/FrontendActions.cpp
@@ -665,7 +665,8 @@
// Create the pass pipeline
fir::createMLIRToLLVMPassPipeline(pm, level, opts.StackArrays,
- opts.Underscoring, opts.getDebugInfo());
+ opts.Underscoring, opts.LoopVersioning,
+ opts.getDebugInfo());
(void)mlir::applyPassManagerCLOptions(pm);
// run the pass manager
@@ -704,7 +705,6 @@
llvmModule->setPIELevel(
static_cast<llvm::PIELevel::Level>(opts.PICLevel));
}
-
}
bool CodeGenAction::setUpTargetMachine() {
Index: flang/lib/Frontend/CompilerInvocation.cpp
===================================================================
--- flang/lib/Frontend/CompilerInvocation.cpp
+++ flang/lib/Frontend/CompilerInvocation.cpp
@@ -163,6 +163,10 @@
clang::driver::options::OPT_fno_stack_arrays, false)) {
opts.StackArrays = 1;
}
+ if (args.hasFlag(clang::driver::options::OPT_floop_versioning,
+ clang::driver::options::OPT_fno_loop_versioning, false)) {
+ opts.LoopVersioning = 1;
+ }
for (auto *a : args.filtered(clang::driver::options::OPT_fpass_plugin_EQ))
opts.LLVMPassPlugins.push_back(a->getValue());
Index: flang/include/flang/Tools/CLOptions.inc
===================================================================
--- flang/include/flang/Tools/CLOptions.inc
+++ flang/include/flang/Tools/CLOptions.inc
@@ -186,7 +186,7 @@
/// \param pm - MLIR pass manager that will hold the pipeline definition
inline void createDefaultFIROptimizerPassPipeline(mlir::PassManager &pm,
llvm::OptimizationLevel optLevel = defaultOptLevel,
- bool stackArrays = false) {
+ bool stackArrays = false, bool loopVersioning = false) {
// simplify the IR
mlir::GreedyRewriteConfig config;
config.enableRegionSimplification = false;
@@ -283,11 +283,13 @@
inline void createMLIRToLLVMPassPipeline(mlir::PassManager &pm,
llvm::OptimizationLevel optLevel = defaultOptLevel,
bool stackArrays = false, bool underscoring = true,
+ bool loopVersioning = false,
llvm::codegenoptions::DebugInfoKind debugInfo = NoDebugInfo) {
fir::createHLFIRToFIRPassPipeline(pm, optLevel);
// Add default optimizer pass pipeline.
- fir::createDefaultFIROptimizerPassPipeline(pm, optLevel, stackArrays);
+ fir::createDefaultFIROptimizerPassPipeline(
+ pm, optLevel, stackArrays, loopVersioning);
// Add codegen pass pipeline.
fir::createDefaultFIRCodeGenPassPipeline(
Index: flang/include/flang/Frontend/CodeGenOptions.def
===================================================================
--- flang/include/flang/Frontend/CodeGenOptions.def
+++ flang/include/flang/Frontend/CodeGenOptions.def
@@ -31,6 +31,7 @@
CODEGENOPT(PrepareForThinLTO , 1, 0) ///< Set when -flto=thin is enabled on the
///< compile step.
CODEGENOPT(StackArrays, 1, 0) ///< -fstack-arrays (enable the stack-arrays pass)
+CODEGENOPT(LoopVersioning, 1, 0) ///< Enable loop versioning.
CODEGENOPT(Underscoring, 1, 1)
ENUM_CODEGENOPT(RelocationModel, llvm::Reloc::Model, 3, llvm::Reloc::PIC_) ///< Name of the relocation model to use.
Index: clang/lib/Driver/ToolChains/Flang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Flang.cpp
+++ clang/lib/Driver/ToolChains/Flang.cpp
@@ -52,6 +52,32 @@
options::OPT_I, options::OPT_cpp, options::OPT_nocpp});
}
+static bool shouldLoopVersion(const ArgList &Args) {
+ if (Arg *A = Args.getLastArg(options::OPT_Ofast, options::OPT_O,
+ options::OPT_O4, options::OPT_floop_versioning,
+ options::OPT_fno_loop_versioning)) {
+ if (A->getOption().matches(options::OPT_fno_loop_versioning))
+ return false;
+
+ if (A->getOption().matches(options::OPT_floop_versioning))
+ return true;
+
+ if (A->getOption().matches(options::OPT_Ofast) ||
+ A->getOption().matches(options::OPT_O4))
+ return true;
+
+ if (A->getOption().matches(options::OPT_O)) {
+ StringRef S(A->getValue());
+ unsigned OptLevel = 0;
+ if (S.getAsInteger(10, OptLevel))
+ return false;
+
+ return OptLevel > 2;
+ }
+ }
+ return false;
+}
+
void Flang::addOtherOptions(const ArgList &Args, ArgStringList &CmdArgs) const {
Args.AddAllArgs(CmdArgs,
{options::OPT_module_dir, options::OPT_fdebug_module_writer,
@@ -80,6 +106,8 @@
DebugInfoKind = llvm::codegenoptions::NoDebugInfo;
}
addDebugInfoKind(CmdArgs, DebugInfoKind);
+ if (shouldLoopVersion(Args))
+ CmdArgs.push_back("-fversion-loops-for-stride");
}
void Flang::addPicOptions(const ArgList &Args, ArgStringList &CmdArgs) const {
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -5167,7 +5167,9 @@
defm stack_arrays : BoolOptionWithoutMarshalling<"f", "stack-arrays",
PosFlag<SetTrue, [], "Attempt to allocate array temporaries on the stack, no matter their size">,
NegFlag<SetFalse, [], "Allocate array temporaries on the heap (default)">>;
-
+defm loop_versioning : BoolOptionWithoutMarshalling<"f", "version-loops-for-stride",
+ PosFlag<SetTrue, [], "Create unit-strided versions of loops">,
+ NegFlag<SetFalse, [], "Do not create unit-strided loops (default)">>;
} // let Flags = [FC1Option, FlangOption, FlangOnlyOption]
def J : JoinedOrSeparate<["-"], "J">,
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