radeon/llvm: Add AsmPrinter

1 files changed, 48 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeon/AMDGPUMCInstLower.cpp b/src/gallium/drivers/radeon/AMDGPUMCInstLower.cpp
new file mode 100644
index 00000000000..53bd561a2fe
--- /dev/null
+++ b/src/gallium/drivers/radeon/AMDGPUMCInstLower.cpp
@@ -0,0 +1,48 @@
+
+#include "AMDGPUMCInstLower.h"
+#include "AMDGPUAsmPrinter.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Constants.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/Support/ErrorHandling.h"
+
+using namespace llvm;
+
+AMDGPUMCInstLower::AMDGPUMCInstLower() { }
+
+void AMDGPUMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
+  OutMI.setOpcode(MI->getOpcode());
+
+  for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
+    const MachineOperand &MO = MI->getOperand(i);
+
+    MCOperand MCOp;
+    switch (MO.getType()) {
+    default:
+      MI->dump();
+      llvm_unreachable("unknown operand type");
+    case MachineOperand::MO_FPImmediate: {
+      const APFloat &FloatValue = MO.getFPImm()->getValueAPF();
+      assert(&FloatValue.getSemantics() == &APFloat::IEEEsingle &&
+             "Only floating point immediates are supported at the moment.");
+      MCOp = MCOperand::CreateFPImm(FloatValue.convertToFloat());
+      break;
+    }
+    case MachineOperand::MO_Immediate:
+      MCOp = MCOperand::CreateImm(MO.getImm());
+      break;
+    case MachineOperand::MO_Register:
+      MCOp = MCOperand::CreateReg(MO.getReg());
+      break;
+    }
+    OutMI.addOperand(MCOp);
+  }
+}
+
+void AMDGPUAsmPrinter::EmitInstruction(const MachineInstr *MI) {
+  AMDGPUMCInstLower MCInstLowering;
+  MCInst TmpInst;
+  MCInstLowering.Lower(MI, TmpInst);
+  OutStreamer.EmitInstruction(TmpInst);
+}