[WebAssembly] Implement unaligned loads and stores.

Differential Revision: http://reviews.llvm.org/D16534

llvm-svn: 258779

2 files changed, 12 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp b/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
index 9a95150cb55..2ecf9be2398 100644
--- a/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
+++ b/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
@@ -172,6 +172,16 @@ void WebAssemblyInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
   }
 }
 
+void
+WebAssemblyInstPrinter::printWebAssemblyP2AlignOperand(const MCInst *MI,
+                                                       unsigned OpNo,
+                                                       raw_ostream &O) {
+  int64_t Imm = MI->getOperand(OpNo).getImm();
+  if (Imm == WebAssembly::GetDefaultP2Align(MI->getOpcode()))
+    return;
+  O << ":p2align=" << Imm;
+}
+
 const char *llvm::WebAssembly::TypeToString(MVT Ty) {
   switch (Ty.SimpleTy) {
   case MVT::i32:
diff --git a/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.h b/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.h
index 50e8ede85f8..a67ecaa2e6b 100644
--- a/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.h
+++ b/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.h
@@ -36,6 +36,8 @@ public:
 
   // Used by tblegen code.
   void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
+  void printWebAssemblyP2AlignOperand(const MCInst *MI, unsigned OpNo,
+                                      raw_ostream &O);
 
   // Autogenerated by tblgen.
   void printInstruction(const MCInst *MI, raw_ostream &O);