Subzero, Wasm: Link and run torture tests; bug fixes.

src/IceTargetLowering.cpp

Index: src/IceTargetLowering.cpp
diff --git a/src/IceTargetLowering.cpp b/src/IceTargetLowering.cpp
index 29fbc7bdbdf02da2edd62e41f4164cb9d6eec809..496845c67ed8bf63645f5e85bd56d51130a87eee 100644
--- a/src/IceTargetLowering.cpp
+++ b/src/IceTargetLowering.cpp
@@ -400,6 +400,9 @@ void TargetLowering::lower() {
     case Inst::Br:
       lowerBr(llvm::cast<InstBr>(Instr));
       break;
+    case Inst::Breakpoint:
+      lowerBreakpoint(llvm::cast<InstBreakpoint>(Instr));
+      break;
     case Inst::Call:
       lowerCall(llvm::cast<InstCall>(Instr));
       break;