[clang] [llvm] [clangd] Add support for the c2000 architecture (PR #125663)

[James Nagurne via cfe-commits]

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@@ -0,0 +1,100 @@
+#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_C2000_H
+#define LLVM_CLANG_LIB_BASIC_TARGETS_C2000_H
+
+#include "clang/Basic/LLVM.h"
+#include "clang/Basic/TargetInfo.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/TargetParser/Triple.h"
+
+namespace clang {
+namespace targets {
+
+class C2000TargetInfo : public TargetInfo {
+  static const char *const GCCRegNames[];
+  bool eabi = false;
+  bool strict = false;
+  bool opt = false;
+  bool fpu64 = false;
+  bool fpu32 = false;
+  bool relaxed = false;
+  bool tmu_support = false;
+  bool cla_support = false;
+  bool vcu_support = false;
+  bool cla0 = false;
+  bool cla1 = false;
+  bool cla2 = false;
+  bool vcu2 = false;
+  bool vcrc = false;
+  bool tmu1 = false;
+  bool idiv0 = false;
+
+public:
+  C2000TargetInfo(const llvm::Triple &Triple, const TargetOptions &)
+      : TargetInfo(Triple) {
+    TLSSupported = false;
+    BigEndian = false;
+    BoolWidth = BoolAlign = 16;
+    IntWidth = IntAlign = 16;
+    LongLongWidth = 64;
+    LongLongAlign = 32;
+    FloatWidth = FloatAlign = 32;
+    DoubleWidth = 64;
+    DoubleAlign = 32;
+    LongDoubleWidth = 64;
+    LongDoubleAlign = 32;
+    PointerWidth = 32;
+    PointerAlign = 16;
+    Char16Type = UnsignedShort;
+    Char32Type = UnsignedLong;
+    SizeType = UnsignedLong;
+    PtrDiffType = SignedLong;
+    WCharType = UnsignedLong;
+    WIntType = UnsignedLong;
+    IntMaxType = SignedLongLong;
+    IntPtrType = SignedInt;
+    resetDataLayout(
+        "e-m:e-p:32:16-i16:16-i32:32-i64:32-f32:32-f64:32-a:8-n16:32-S32");
+  }
+
+  bool handleTargetFeatures(std::vector<std::string> &Features,
+                            DiagnosticsEngine &Diags) override;
+
+  void getTargetDefines(const LangOptions &Opts,
+                        MacroBuilder &Builder) const override;
+
+  ArrayRef<Builtin::Info> getTargetBuiltins() const override { return {}; }
+
+  bool hasFeature(StringRef Feature) const override;
+
+  ArrayRef<const char *> getGCCRegNames() const override;
+
+  ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
+    // Make these be recognized by llc (f.e., in clobber list)
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DragonDisciple wrote:

Copy-pasted and should likely be an empty set instead. 'llc' should never see code generated by this target.

https://github.com/llvm/llvm-project/pull/125663