fpetrogalli updated this revision to Diff 79734.
fpetrogalli added a comment.
Rebase plus apply clang format.
https://reviews.llvm.org/D27250
Files:
lib/CodeGen/BackendUtil.cpp
lib/CodeGen/CGCall.cpp
lib/CodeGen/CGOpenMPRuntime.cpp
lib/CodeGen/CGOpenMPRuntime.h
test/OpenMP/declare_simd_no_definition.c
test/OpenMP/declare_simd_no_definition.cpp
Index: test/OpenMP/declare_simd_no_definition.cpp
===================================================================
--- /dev/null
+++ test/OpenMP/declare_simd_no_definition.cpp
@@ -0,0 +1,55 @@
+// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp -x c++ -emit-llvm %s -o - -femit-all-decls -verify| FileCheck %s
+// RUN: %clang_cc1 -verify -triple aarch64-linux-gnu -fopenmp -x c++ -emit-llvm %s -o - -femit-all-decls -verify| FileCheck %s --check-prefix=AARCH64
+// expected-no-diagnostics
+
+#pragma omp declare simd
+double f(double x);
+
+#pragma omp declare simd
+float f(float x);
+
+void aaa(double *x, double *y, int N) {
+ for (int i = 0; i < N; ++i) {
+ x[i] = f(y[i]);
+ }
+}
+
+void aaa(float *x, float *y, int N) {
+ for (int i = 0; i < N; ++i) {
+ x[i] = f(y[i]);
+ }
+}
+
+// CHECK-LABEL: define void @_Z3aaaPdS_i
+// CHECK-DAG: %call = call double @_Z1fd(double %{{[0-9]+}}) #[[attrD:[0-9]+]]
+
+// CHECK-LABEL: define void @_Z3aaaPfS_i
+// CHECK-DAG: %call = call float @_Z1ff(float %{{[0-9]+}}) #[[attrF:[0-9]+]]
+
+// CHECK-DAG: attributes #[[attrD]]
+// CHECK-DAG: _ZGVbM2v__Z1fd
+// CHECK-DAG: _ZGVbN2v__Z1fd
+// CHECK-DAG: _ZGVcM4v__Z1fd
+// CHECK-DAG: _ZGVcN4v__Z1fd
+// CHECK-DAG: _ZGVdM4v__Z1fd
+// CHECK-DAG: _ZGVdN4v__Z1fd
+// CHECK-DAG: _ZGVeM8v__Z1fd
+// CHECK-DAG: _ZGVeN8v__Z1fd
+
+// CHECK-DAG: attributes #[[attrF]]
+// CHECK-DAG: _ZGVbM4v__Z1ff
+// CHECK-DAG: _ZGVbN4v__Z1ff
+// CHECK-DAG: _ZGVcM8v__Z1ff
+// CHECK-DAG: _ZGVcN8v__Z1ff
+// CHECK-DAG: _ZGVdM8v__Z1ff
+// CHECK-DAG: _ZGVdN8v__Z1ff
+// CHECK-DAG: _ZGVeM16v__Z1ff
+// CHECK-DAG: _ZGVeN16v__Z1ff
+
+// AARCH64-DAG: @vec_prefix__VA64QM2v__Z1fd_vec_midfix__Z1fd_vec_postfix = external global <2 x double> (<2 x i64>, <2 x double>)
+// AARCH64-DAG: @vec_prefix__VA64QN2v__Z1fd_vec_midfix__Z1fd_vec_postfix = external global <2 x double> (<2 x double>)
+
+// AARCH64-DAG: @vec_prefix__VA64DM2v__Z1ff_vec_midfix__Z1ff_vec_postfix = external global <2 x float> (<2 x i32>, <2 x float>)
+// AARCH64-DAG: @vec_prefix__VA64QM4v__Z1ff_vec_midfix__Z1ff_vec_postfix = external global <4 x float> (<4 x i32>, <4 x float>)
+// AARCH64-DAG: @vec_prefix__VA64DN2v__Z1ff_vec_midfix__Z1ff_vec_postfix = external global <2 x float> (<2 x float>)
+// AARCH64-DAG: @vec_prefix__VA64QN4v__Z1ff_vec_midfix__Z1ff_vec_postfix = external global <4 x float> (<4 x float>)
Index: test/OpenMP/declare_simd_no_definition.c
===================================================================
--- /dev/null
+++ test/OpenMP/declare_simd_no_definition.c
@@ -0,0 +1,41 @@
+// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp -x c -emit-llvm %s -o - -femit-all-decls -verify| FileCheck %s
+// RUN: %clang_cc1 -verify -triple aarch64-linux-gnu -fopenmp -x c -emit-llvm %s -o - -femit-all-decls -verify| FileCheck %s --check-prefix=AARCH64
+// expected-no-diagnostics
+
+#pragma omp declare simd
+double f(double x);
+
+void aaa(double *x, double *y, int N) {
+ for (int i = 0; i < N; ++i) {
+ x[i] = f(y[i]);
+ }
+}
+
+#pragma omp declare simd notinbranch
+#pragma omp declare simd uniform(y)
+double xpow(double x, double y);
+
+void bbb(double *x, double *y, int N) {
+ for (int i = 0; i < N; ++i) {
+ x[i] = xpow(y[i], N);
+ }
+}
+
+// CHECK-LABEL: define void @aaa
+// CHECK-DAG: %call = call double @f(double %{{[0-9]+}}) #[[attr:[0-9]+]]
+// CHECK: attributes #[[attr]]
+// CHECK-DAG: _ZGVbM2v_f
+// CHECK-DAG: _ZGVbN2v_f
+// CHECK-DAG: _ZGVcM4v_f
+// CHECK-DAG: _ZGVcN4v_f
+// CHECK-DAG: _ZGVdM4v_f
+// CHECK-DAG: _ZGVdN4v_f
+// CHECK-DAG: _ZGVeM8v_f
+// CHECK-DAG: _ZGVeN8v_f
+
+// AARCH64-DAG: @vec_prefix__VA64QM2v_f_vec_midfix_f_vec_postfix = external global <2 x double> (<2 x i64>, <2 x double>)
+// AARCH64-DAG: @vec_prefix__VA64QN2v_f_vec_midfix_f_vec_postfix = external global <2 x double> (<2 x double>)
+
+// AARCH64-DAG: @vec_prefix__VA64QM2vu_xpow_vec_midfix_xpow_vec_postfix = external global <2 x double> (<2 x i64>, <2 x double>, double)
+// AARCH64-DAG: @vec_prefix__VA64QN2vu_xpow_vec_midfix_xpow_vec_postfix = external global <2 x double> (<2 x double>, double)
+// AARCH64-DAG: @vec_prefix__VA64QN2vv_xpow_vec_midfix_xpow_vec_postfix = external global <2 x double> (<2 x double>, <2 x double>)
Index: lib/CodeGen/CGOpenMPRuntime.h
===================================================================
--- lib/CodeGen/CGOpenMPRuntime.h
+++ lib/CodeGen/CGOpenMPRuntime.h
@@ -1070,6 +1070,11 @@
virtual void emitDeclareSimdFunction(const FunctionDecl *FD,
llvm::Function *Fn);
+ /// Provides all the names of the vector variants associated to a
+ /// function \param FD marked with "declare simd'
+ virtual std::vector<std::string>
+ listAvailableVectorSignatures(const FunctionDecl *FD);
+
/// Emit initialization for doacross loop nesting support.
/// \param D Loop-based construct used in doacross nesting construct.
virtual void emitDoacrossInit(CodeGenFunction &CGF,
Index: lib/CodeGen/CGOpenMPRuntime.cpp
===================================================================
--- lib/CodeGen/CGOpenMPRuntime.cpp
+++ lib/CodeGen/CGOpenMPRuntime.cpp
@@ -19,6 +19,7 @@
#include "clang/AST/Decl.h"
#include "clang/AST/StmtOpenMP.h"
#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/IR/CallSite.h"
#include "llvm/IR/DerivedTypes.h"
@@ -6515,11 +6516,12 @@
return C.getTypeSize(CDT);
}
-static void
-emitX86DeclareSimdFunction(const FunctionDecl *FD, llvm::Function *Fn,
- const llvm::APSInt &VLENVal,
+static std::vector<std::string>
+emitX86DeclareSimdFunction(const FunctionDecl *FD, llvm::APSInt VLENVal,
ArrayRef<ParamAttrTy> ParamAttrs,
- OMPDeclareSimdDeclAttr::BranchStateTy State) {
+ OMPDeclareSimdDeclAttr::BranchStateTy State,
+ const StringRef MangledName) {
+ std::vector<std::string> OutVec;
struct ISADataTy {
char ISA;
unsigned VecRegSize;
@@ -6581,14 +6583,144 @@
if (!!ParamAttr.Alignment)
Out << 'a' << ParamAttr.Alignment;
}
- Out << '_' << Fn->getName();
- Fn->addFnAttr(Out.str());
+ Out << '_' << MangledName;
+ OutVec.push_back(Out.str());
+ }
+ }
+ return OutVec;
+}
+
+static llvm::VectorType *getAArch64MaskTy(const char ISA,
+ const unsigned LaneSizeInBits,
+ const unsigned VLEN,
+ llvm::LLVMContext &C) {
+
+ switch (LaneSizeInBits) {
+ case 64:
+ return llvm::VectorType::get(llvm::Type::getInt64Ty(C), VLEN);
+ case 32:
+ return llvm::VectorType::get(llvm::Type::getInt32Ty(C), VLEN);
+ case 16:
+ return llvm::VectorType::get(llvm::Type::getInt16Ty(C), VLEN);
+ case 8:
+ return llvm::VectorType::get(llvm::Type::getInt8Ty(C), VLEN);
+ default:
+ llvm_unreachable("Type is not supported");
+ }
+ return nullptr;
+}
+
+static void emitAArch64DeclareSimdFunction(
+ CodeGenModule &CGM, const FunctionDecl *FD, const llvm::APSInt &UserVLEN,
+ ArrayRef<ParamAttrTy> ParamAttrs,
+ OMPDeclareSimdDeclAttr::BranchStateTy State, const StringRef MangledName) {
+ struct ISADataTy {
+ char ISA;
+ unsigned VecRegSize;
+ };
+ // make this depend on the size of
+ const ISADataTy ISAData[] = {
+ {'Q', 128}, // NEON 128
+ {'D', 64}, // NEON 64
+ };
+ std::vector<char> Masked;
+ switch (State) {
+ case OMPDeclareSimdDeclAttr::BS_Undefined:
+ Masked = {'M', 'N'};
+ break;
+ case OMPDeclareSimdDeclAttr::BS_Notinbranch:
+ Masked = {'N'};
+ break;
+ case OMPDeclareSimdDeclAttr::BS_Inbranch:
+ Masked = {'M'};
+ break;
+ }
+
+ for (auto Mask : Masked) {
+ for (auto Data : ISAData) {
+ std::string Buffer;
+ llvm::raw_string_ostream Out(Buffer);
+ Out << "_VA64" << Data.ISA << Mask;
+ std::vector<llvm::Type *> Args;
+ auto VLEN = UserVLEN;
+
+ // Compute VLEN if the user hasn't provided one in the pragma.
+ if (!UserVLEN) {
+ auto CDTSize = evaluateCDTSize(FD, ParamAttrs);
+ VLEN = llvm::APSInt::getUnsigned(Data.VecRegSize / CDTSize);
+ }
+ // that's not a vector, skip
+ if (VLEN == 1)
+ continue;
+
+ // Add extra paramter if the function is Masked
+ if (Mask == 'M') {
+ auto MaskTy =
+ getAArch64MaskTy(Data.ISA, Data.VecRegSize / VLEN.getExtValue(),
+ VLEN.getExtValue(), CGM.getLLVMContext());
+ Args.push_back(MaskTy);
+ }
+
+ Out << VLEN;
+ unsigned Pos = 0;
+ for (auto &ParamAttr : ParamAttrs) {
+ switch (ParamAttr.Kind) {
+ case LinearWithVarStride:
+ Out << 's' << ParamAttr.StrideOrArg;
+ break;
+ case Linear:
+ Out << 'l';
+ if (!!ParamAttr.StrideOrArg)
+ Out << ParamAttr.StrideOrArg;
+ break;
+ case Uniform:
+ Out << 'u';
+ break;
+ case Vector:
+ Out << 'v';
+ break;
+ }
+
+ if (!!ParamAttr.Alignment)
+ Out << 'a' << ParamAttr.Alignment;
+
+ llvm::Type *Ty = CGM.getTypes().ConvertType(
+ FD->getParamDecl(Pos)->getOriginalType());
+ llvm::Type *VecTy = llvm::VectorType::get(Ty, VLEN.getExtValue());
+ switch (ParamAttr.Kind) {
+ default:
+ Args.push_back(VecTy);
+ break;
+ case Uniform:
+ Args.push_back(Ty);
+ break;
+ }
+
+ ++Pos;
+ }
+ Out << '_' << MangledName;
+ std::string GlobalName =
+ llvm::TargetLibraryInfoImpl::mangle(Out.str(), MangledName);
+ llvm::Type *RetTy = CGM.getTypes().ConvertType(FD->getReturnType());
+ llvm::Type *VecRetTy = llvm::VectorType::get(RetTy, VLEN.getExtValue());
+ llvm::FunctionType *FTy = llvm::FunctionType::get(VecRetTy, Args, false);
+ CGM.getModule().getOrInsertGlobal(GlobalName, FTy);
}
}
}
void CGOpenMPRuntime::emitDeclareSimdFunction(const FunctionDecl *FD,
llvm::Function *Fn) {
+
+ auto FunList = listAvailableVectorSignatures(FD);
+ for (auto &VectorName : FunList) {
+ std::string name = VectorName;
+ Fn->addFnAttr(name);
+ }
+}
+
+std::vector<std::string>
+CGOpenMPRuntime::listAvailableVectorSignatures(const FunctionDecl *FD) {
ASTContext &C = CGM.getContext();
FD = FD->getCanonicalDecl();
// Map params to their positions in function decl.
@@ -6600,6 +6732,8 @@
ParamPositions.insert({P->getCanonicalDecl(), ParamPos});
++ParamPos;
}
+ std::vector<std::string> OutVec;
+ std::string MangledName = CGM.getMangledName(GlobalDecl(FD));
for (auto *Attr : FD->specific_attrs<OMPDeclareSimdDeclAttr>()) {
llvm::SmallVector<ParamAttrTy, 8> ParamAttrs(ParamPositions.size());
// Mark uniform parameters.
@@ -6672,9 +6806,18 @@
VLENVal = VLEN->EvaluateKnownConstInt(C);
OMPDeclareSimdDeclAttr::BranchStateTy State = Attr->getBranchState();
if (CGM.getTriple().getArch() == llvm::Triple::x86 ||
- CGM.getTriple().getArch() == llvm::Triple::x86_64)
- emitX86DeclareSimdFunction(FD, Fn, VLENVal, ParamAttrs, State);
+ CGM.getTriple().getArch() == llvm::Triple::x86_64) {
+ const auto Out = emitX86DeclareSimdFunction(FD, VLENVal, ParamAttrs,
+ State, MangledName);
+ for (auto &VecName : Out)
+ OutVec.push_back(VecName);
+ }
+ if (CGM.getTriple().getArch() == llvm::Triple::aarch64) {
+ emitAArch64DeclareSimdFunction(CGM, FD, VLENVal, ParamAttrs, State,
+ MangledName);
+ }
}
+ return OutVec;
}
namespace {
Index: lib/CodeGen/CGCall.cpp
===================================================================
--- lib/CodeGen/CGCall.cpp
+++ lib/CodeGen/CGCall.cpp
@@ -17,6 +17,7 @@
#include "CGBlocks.h"
#include "CGCXXABI.h"
#include "CGCleanup.h"
+#include "CGOpenMPRuntime.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include "TargetInfo.h"
@@ -1663,6 +1664,15 @@
const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(Fn);
if (Fn->isNoReturn() && !(AttrOnCallSite && MD && MD->isVirtual()))
FuncAttrs.addAttribute(llvm::Attribute::NoReturn);
+
+ // TODO: this should work also when using -fopenmp-simd
+ if (getLangOpts().OpenMP && Fn->hasAttr<OMPDeclareSimdDeclAttr>() &&
+ !Fn->hasBody()) {
+ auto MangledNames =
+ CGOpenMPRuntime(*this).listAvailableVectorSignatures(Fn);
+ for (auto &MangledName : MangledNames)
+ FuncAttrs.addAttribute(MangledName);
+ }
}
// 'const', 'pure' and 'noalias' attributed functions are also nounwind.
Index: lib/CodeGen/BackendUtil.cpp
===================================================================
--- lib/CodeGen/BackendUtil.cpp
+++ lib/CodeGen/BackendUtil.cpp
@@ -306,6 +306,10 @@
std::unique_ptr<TargetLibraryInfoImpl> TLII(
createTLII(TargetTriple, CodeGenOpts));
+ if (LangOpts.OpenMP) {
+ TLII->addOpenMPVectorFunctions(TheModule);
+ }
+
switch (Inlining) {
case CodeGenOptions::NoInlining:
break;
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