[WebAssembly] Add new explicit relocation types for PIC relocations

See https://github.com/WebAssembly/tool-conventions/pull/106

Differential Revision: https://reviews.llvm.org/D59907

llvm-svn: 357710

1 files changed, 14 insertions, 2 deletions

diff --git a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.h b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.h
index 69c477bbbb5..4c7114eea11 100644
--- a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.h
+++ b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.h
@@ -90,9 +90,21 @@ namespace WebAssemblyII {
 enum TOF {
   MO_NO_FLAG = 0,
 
-  // Address of data symbol via a wasm global.  This adds a level of indirection
-  // similar to the GOT on native platforms.
+  // On a symbol operand this indicates that the immediate is a wasm global
+  // index.  The value of the wasm global will be set to the symbol address at
+  // runtime.  This adds a level of indirection similar to the GOT on native
+  // platforms.
   MO_GOT,
+
+  // On a symbol operand this indicates that the immediate is the symbol
+  // address relative the __memory_base wasm global.
+  // Only applicable to data symbols.
+  MO_MEMORY_BASE_REL,
+
+  // On a symbol operand this indicates that the immediate is the symbol
+  // address relative the __table_base wasm global.
+  // Only applicable to function symbols.
+  MO_TABLE_BASE_REL,
 };
 
 } // end namespace WebAssemblyII