[RISCV] Support absolute address operand flags

1 files changed, 11 insertions, 3 deletions

diff --git a/backend/lib/Target/RISCV/RISCVMCTargetLowering.cpp b/backend/lib/Target/RISCV/RISCVMCTargetLowering.cpp
index 19b1b11..ee41d47 100644
--- a/backend/lib/Target/RISCV/RISCVMCTargetLowering.cpp
+++ b/backend/lib/Target/RISCV/RISCVMCTargetLowering.cpp
@@ -45,9 +45,11 @@ constexpr std::uint32_t PCRelativeHighTargetFlag = 2;
 constexpr std::uint32_t PCRelativeLowTargetFlag = 4;
 constexpr std::uint32_t CopyF32TargetFlag = 8;
 constexpr std::uint32_t CopyF64TargetFlag = 16;
-constexpr std::uint32_t KnownTargetFlags = CallTargetFlag | PCRelativeHighTargetFlag |
-                                           PCRelativeLowTargetFlag | CopyF32TargetFlag |
-                                           CopyF64TargetFlag;
+constexpr std::uint32_t AbsoluteHighTargetFlag = 32;
+constexpr std::uint32_t AbsoluteLowTargetFlag = 64;
+constexpr std::uint32_t KnownTargetFlags =
+    CallTargetFlag | PCRelativeHighTargetFlag | PCRelativeLowTargetFlag | CopyF32TargetFlag |
+    CopyF64TargetFlag | AbsoluteHighTargetFlag | AbsoluteLowTargetFlag;
 
 struct TypeLayout final {
   std::uint64_t Size = 0;
@@ -219,6 +221,12 @@ struct TypeLayout final {
   case PCRelativeLowTargetFlag:
     Kind = RISCVMCExprKind::PCRelativeLow;
     break;
+  case AbsoluteHighTargetFlag:
+    Kind = RISCVMCExprKind::AbsoluteHigh;
+    break;
+  case AbsoluteLowTargetFlag:
+    Kind = RISCVMCExprKind::AbsoluteLow;
+    break;
   default:
     return makeUnexpected(ErrorCode::AssemblyLoweringFailed,
                           "RISC-V operand combines incompatible direct target flags");