2 files changed, 33 insertions, 5 deletions
diff --git a/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
index 4a3f2c975179..47a2d3f2fdc5 100644
--- a/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
+++ b/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
@@ -348,10 +348,12 @@ MCOperand AMDGPUDisassembler::createSRegOperand(unsigned SRegClassID,
   case AMDGPU::TTMP_128RegClassID:
   // ToDo: unclear if s[100:104] is available on VI. Can we use VCC as SGPR in
   // this bundle?
-  case AMDGPU::SReg_256RegClassID:
-  // ToDo: unclear if s[96:104] is available on VI. Can we use VCC as SGPR in
+  case AMDGPU::SGPR_256RegClassID:
+  case AMDGPU::TTMP_256RegClassID:
+    // ToDo: unclear if s[96:104] is available on VI. Can we use VCC as SGPR in
   // this bundle?
-  case AMDGPU::SReg_512RegClassID:
+  case AMDGPU::SGPR_512RegClassID:
+  case AMDGPU::TTMP_512RegClassID:
     shift = 2;
     break;
   // ToDo: unclear if s[88:104] is available on VI. Can we use VCC as SGPR in
@@ -441,11 +443,11 @@ MCOperand AMDGPUDisassembler::decodeOperand_SReg_128(unsigned Val) const {
 }
 
 MCOperand AMDGPUDisassembler::decodeOperand_SReg_256(unsigned Val) const {
-  return createSRegOperand(AMDGPU::SReg_256RegClassID, Val);
+  return decodeDstOp(OPW256, Val);
 }
 
 MCOperand AMDGPUDisassembler::decodeOperand_SReg_512(unsigned Val) const {
-  return createSRegOperand(AMDGPU::SReg_512RegClassID, Val);
+  return decodeDstOp(OPW512, Val);
 }
 
 MCOperand AMDGPUDisassembler::decodeLiteralConstant() const {
@@ -593,6 +595,8 @@ unsigned AMDGPUDisassembler::getSgprClassId(const OpWidthTy Width) const {
     return SGPR_32RegClassID;
   case OPW64: return SGPR_64RegClassID;
   case OPW128: return SGPR_128RegClassID;
+  case OPW256: return SGPR_256RegClassID;
+  case OPW512: return SGPR_512RegClassID;
   }
 }
 
@@ -608,6 +612,8 @@ unsigned AMDGPUDisassembler::getTtmpClassId(const OpWidthTy Width) const {
     return TTMP_32RegClassID;
   case OPW64: return TTMP_64RegClassID;
   case OPW128: return TTMP_128RegClassID;
+  case OPW256: return TTMP_256RegClassID;
+  case OPW512: return TTMP_512RegClassID;
   }
 }
 
@@ -659,6 +665,25 @@ MCOperand AMDGPUDisassembler::decodeSrcOp(const OpWidthTy Width, unsigned Val) c
   }
 }
 
+MCOperand AMDGPUDisassembler::decodeDstOp(const OpWidthTy Width, unsigned Val) const {
+  using namespace AMDGPU::EncValues;
+
+  assert(Val < 128);
+  assert(Width == OPW256 || Width == OPW512);
+
+  if (Val <= SGPR_MAX) {
+    assert(SGPR_MIN == 0); // "SGPR_MIN <= Val" is always true and causes compilation warning.
+    return createSRegOperand(getSgprClassId(Width), Val - SGPR_MIN);
+  }
+
+  int TTmpIdx = getTTmpIdx(Val);
+  if (TTmpIdx >= 0) {
+    return createSRegOperand(getTtmpClassId(Width), TTmpIdx);
+  }
+
+  llvm_unreachable("unknown dst register");
+}
+
 MCOperand AMDGPUDisassembler::decodeSpecialReg32(unsigned Val) const {
   using namespace AMDGPU;
 
diff --git a/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h b/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h
index ce396eb68c4c..75cfc5e11282 100644
--- a/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h
+++ b/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h
@@ -95,6 +95,8 @@ public:
     OPW32,
     OPW64,
     OPW128,
+    OPW256,
+    OPW512,
     OPW16,
     OPWV216,
     OPW_LAST_,
@@ -110,6 +112,7 @@ public:
   MCOperand decodeLiteralConstant() const;
 
   MCOperand decodeSrcOp(const OpWidthTy Width, unsigned Val) const;
+  MCOperand decodeDstOp(const OpWidthTy Width, unsigned Val) const;
   MCOperand decodeSpecialReg32(unsigned Val) const;
   MCOperand decodeSpecialReg64(unsigned Val) const;