[OPENMP50]Codegen for nontemporal clause.
Summary:
Basic codegen for the declarations marked as nontemporal. Also, if the
base declaration in the member expression is marked as nontemporal,
lvalue for member decl access inherits nonteporal flag from the base
lvalue.
Reviewers: rjmccall, hfinkel, jdoerfert
Subscribers: guansong, arphaman, caomhin, kkwli0, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D71708
diff --git a/clang/lib/CodeGen/CGOpenMPRuntime.cpp b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
index 1aae18b..2a53e99 100644
--- a/clang/lib/CodeGen/CGOpenMPRuntime.cpp
+++ b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
@@ -17,6 +17,7 @@
#include "CodeGenFunction.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
+#include "clang/AST/OpenMPClause.h"
#include "clang/AST/StmtOpenMP.h"
#include "clang/Basic/BitmaskEnum.h"
#include "clang/CodeGen/ConstantInitBuilder.h"
@@ -11341,6 +11342,46 @@
return true;
}
+CGOpenMPRuntime::NontemporalDeclsRAII::NontemporalDeclsRAII(
+ CodeGenModule &CGM, const OMPLoopDirective &S)
+ : CGM(CGM), NeedToPush(S.hasClausesOfKind<OMPNontemporalClause>()) {
+ assert(CGM.getLangOpts().OpenMP && "Not in OpenMP mode.");
+ if (!NeedToPush)
+ return;
+ NontemporalDeclsSet &DS =
+ CGM.getOpenMPRuntime().NontemporalDeclsStack.emplace_back();
+ for (const auto *C : S.getClausesOfKind<OMPNontemporalClause>()) {
+ for (const Stmt *Ref : C->private_refs()) {
+ const auto *SimpleRefExpr = cast<Expr>(Ref)->IgnoreParenImpCasts();
+ const ValueDecl *VD;
+ if (const auto *DRE = dyn_cast<DeclRefExpr>(SimpleRefExpr)) {
+ VD = DRE->getDecl();
+ } else {
+ const auto *ME = cast<MemberExpr>(SimpleRefExpr);
+ assert((ME->isImplicitCXXThis() ||
+ isa<CXXThisExpr>(ME->getBase()->IgnoreParenImpCasts())) &&
+ "Expected member of current class.");
+ VD = ME->getMemberDecl();
+ }
+ DS.insert(VD);
+ }
+ }
+}
+
+CGOpenMPRuntime::NontemporalDeclsRAII::~NontemporalDeclsRAII() {
+ if (!NeedToPush)
+ return;
+ CGM.getOpenMPRuntime().NontemporalDeclsStack.pop_back();
+}
+
+bool CGOpenMPRuntime::isNontemporalDecl(const ValueDecl *VD) const {
+ assert(CGM.getLangOpts().OpenMP && "Not in OpenMP mode.");
+
+ return llvm::any_of(
+ CGM.getOpenMPRuntime().NontemporalDeclsStack,
+ [VD](const NontemporalDeclsSet &Set) { return Set.count(VD) > 0; });
+}
+
llvm::Function *CGOpenMPSIMDRuntime::emitParallelOutlinedFunction(
const OMPExecutableDirective &D, const VarDecl *ThreadIDVar,
OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) {