vendor/llvm-project/llvmorg-12-init-17869-g8e464dd76bef

1 files changed, 34 insertions, 0 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.cpp b/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.cpp
index daf88589bb52..c976a9c62d3b 100644
--- a/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.cpp
@@ -8,6 +8,7 @@
 
 #include "PPCMachineFunctionInfo.h"
 #include "llvm/ADT/Twine.h"
+#include "llvm/BinaryFormat/XCOFF.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/Support/CommandLine.h"
@@ -63,3 +64,36 @@ bool PPCFunctionInfo::isLiveInZExt(Register VReg) const {
       return LiveIn.second.isZExt();
   return false;
 }
+
+void PPCFunctionInfo::appendParameterType(ParamType Type) {
+  uint32_t CopyParamType = ParameterType;
+  int Bits = 0;
+
+  // If it is fixed type, we only need to increase the FixedParamNum, for
+  // the bit encode of fixed type is bit of zero, we do not need to change the
+  // ParamType.
+  if (Type == FixedType) {
+    ++FixedParamNum;
+    return;
+  }
+
+  ++FloatingPointParamNum;
+
+  for (int I = 0;
+       I < static_cast<int>(FloatingPointParamNum + FixedParamNum - 1); ++I) {
+    if (CopyParamType & XCOFF::TracebackTable::ParmTypeIsFloatingBit) {
+      // '10'b => floating point short parameter.
+      // '11'b => floating point long parameter.
+      CopyParamType <<= 2;
+      Bits += 2;
+    } else {
+      // '0'b => fixed parameter.
+      CopyParamType <<= 1;
+      ++Bits;
+    }
+  }
+
+  assert(Type != FixedType && "FixedType should already be handled.");
+  if (Bits < 31)
+    ParameterType |= Type << (30 - Bits);
+}