1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
index 573e4c2af84..f1bb524ad58 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
@@ -43,6 +43,8 @@ using namespace llvm;
 
 #define DEBUG_TYPE "asm-printer"
 
+extern cl::opt<bool> WasmKeepRegisters;
+
 //===----------------------------------------------------------------------===//
 // Helpers.
 //===----------------------------------------------------------------------===//
@@ -304,6 +306,14 @@ void WebAssemblyAsmPrinter::EmitInstruction(const MachineInstr *MI) {
       OutStreamer->AddBlankLine();
     }
     break;
+  case WebAssembly::EXTRACT_EXCEPTION_I32:
+  case WebAssembly::EXTRACT_EXCEPTION_I32_S:
+    // These are pseudo instructions that simulates popping values from stack.
+    // We print these only when we have -wasm-keep-registers on for assembly
+    // readability.
+    if (!WasmKeepRegisters)
+      break;
+    LLVM_FALLTHROUGH;
   default: {
     WebAssemblyMCInstLower MCInstLowering(OutContext, *this);
     MCInst TmpInst;