vendor/llvm-project/llvmorg-11-init-20887-g2e10b7a39b9vendor/llvm-project/master

1 files changed, 54 insertions, 0 deletions

diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFStreamer.h b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFStreamer.h
new file mode 100644
index 0000000000000..51863232d0719
--- /dev/null
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFStreamer.h
@@ -0,0 +1,54 @@
+//===- PPCELFStreamer.h - ELF Object Output --------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a custom MCELFStreamer for PowerPC.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_PPC_MCELFSTREAMER_PPCELFSTREAMER_H
+#define LLVM_LIB_TARGET_PPC_MCELFSTREAMER_PPCELFSTREAMER_H
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/MC/MCELFStreamer.h"
+#include <memory>
+
+namespace llvm {
+
+class MCAsmBackend;
+class MCCodeEmitter;
+class MCContext;
+class MCSubtargetInfo;
+
+class PPCELFStreamer : public MCELFStreamer {
+  // We need to keep track of the last label we emitted (only one) because
+  // depending on whether the label is on the same line as an aligned
+  // instruction or not, the label may refer to the instruction or the nop.
+  MCSymbol *LastLabel;
+  SMLoc LastLabelLoc;
+
+public:
+  PPCELFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> MAB,
+                 std::unique_ptr<MCObjectWriter> OW,
+                 std::unique_ptr<MCCodeEmitter> Emitter);
+
+  void emitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
+
+  // EmitLabel updates LastLabel and LastLabelLoc when a new label is emitted.
+  void emitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override;
+private:
+  void emitPrefixedInstruction(const MCInst &Inst, const MCSubtargetInfo &STI);
+};
+
+MCELFStreamer *createPPCELFStreamer(MCContext &Context,
+                                    std::unique_ptr<MCAsmBackend> MAB,
+                                    std::unique_ptr<MCObjectWriter> OW,
+                                    std::unique_ptr<MCCodeEmitter> Emitter);
+} // end namespace llvm
+
+#endif // LLVM_LIB_TARGET_PPC_MCELFSTREAMER_PPCELFSTREAMER_H