Subzero: Decorate the text asm output with register availability info.

src/llvm2ice.cpp

Index: src/llvm2ice.cpp
diff --git a/src/llvm2ice.cpp b/src/llvm2ice.cpp
index 1d7d193b169f3a0c7941582d605e89ee4a5dcf05..ffbf19680f5315876d11f82d620f7e40b6a0e704 100644
--- a/src/llvm2ice.cpp
+++ b/src/llvm2ice.cpp
@@ -120,6 +120,10 @@ EnablePhiEdgeSplit("phi-edge-split",
                    cl::desc("Enable edge splitting for Phi lowering"),
                    cl::init(true));
 
+static cl::opt<bool> DecorateAsm(
+    "asm-verbose",
+    cl::desc("Decorate textual asm output with register liveness info"));
+
 static cl::opt<bool>
 DumpStats("stats",
           cl::desc("Print statistics after translating each function"));
@@ -256,6 +260,7 @@ int main(int argc, char **argv) {
   Flags.UseIntegratedAssembler = UseIntegratedAssembler;
   Flags.UseSandboxing = UseSandboxing;
   Flags.PhiEdgeSplit = EnablePhiEdgeSplit;
+  Flags.DecorateAsm = DecorateAsm;
   Flags.DumpStats = DumpStats;
   Flags.AllowUninitializedGlobals = AllowUninitializedGlobals;
   Flags.TimeEachFunction = TimeEachFunction;