[WebAssembly] Add experimental multivalue calling ABI
Summary:
For now, this ABI simply expands all possible aggregate arguments and
returns all possible aggregates directly. This ABI will change rapidly
as we prototype and benchmark a new ABI that takes advantage of
multivalue return and possibly other changes from the MVP ABI.
Reviewers: aheejin, dschuff
Subscribers: sbc100, jgravelle-google, sunfish, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D72972
diff --git a/clang/lib/Basic/Targets/WebAssembly.cpp b/clang/lib/Basic/Targets/WebAssembly.cpp
index ef79367..6746768 100644
--- a/clang/lib/Basic/Targets/WebAssembly.cpp
+++ b/clang/lib/Basic/Targets/WebAssembly.cpp
@@ -33,6 +33,16 @@
static constexpr llvm::StringLiteral ValidCPUNames[] = {
{"mvp"}, {"bleeding-edge"}, {"generic"}};
+StringRef WebAssemblyTargetInfo::getABI() const { return ABI; }
+
+bool WebAssemblyTargetInfo::setABI(const std::string &Name) {
+ if (Name != "mvp" && Name != "experimental-mv")
+ return false;
+
+ ABI = Name;
+ return true;
+}
+
bool WebAssemblyTargetInfo::hasFeature(StringRef Feature) const {
return llvm::StringSwitch<bool>(Feature)
.Case("simd128", SIMDLevel >= SIMD128)
diff --git a/clang/lib/Basic/Targets/WebAssembly.h b/clang/lib/Basic/Targets/WebAssembly.h
index b022b4b..dd55849 100644
--- a/clang/lib/Basic/Targets/WebAssembly.h
+++ b/clang/lib/Basic/Targets/WebAssembly.h
@@ -40,6 +40,8 @@
bool HasTailCall = false;
bool HasReferenceTypes = false;
+ std::string ABI;
+
public:
explicit WebAssemblyTargetInfo(const llvm::Triple &T, const TargetOptions &)
: TargetInfo(T) {
@@ -59,6 +61,9 @@
IntPtrType = SignedLong;
}
+ StringRef getABI() const override;
+ bool setABI(const std::string &Name) override;
+
protected:
void getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const override;