Subzero: Improve usability of liveness-related tools.

src/IceTargetLoweringMIPS32.cpp

Index: src/IceTargetLoweringMIPS32.cpp
diff --git a/src/IceTargetLoweringMIPS32.cpp b/src/IceTargetLoweringMIPS32.cpp
index 22c37435e0d2a45cce4bc4509df8c6342c0205a0..98a698c2e923936597817f0cdf98645349df57e2 100644
--- a/src/IceTargetLoweringMIPS32.cpp
+++ b/src/IceTargetLoweringMIPS32.cpp
@@ -658,7 +658,7 @@ void TargetMIPS32::postLower() {
   if (Ctx->getFlags().getOptLevel() == Opt_m1)
     return;
   // Find two-address non-SSA instructions where Dest==Src0, and set the
-  // DestNonKillable flag to keep liveness analysis consistent.
+  // IsDestRedefined flag to keep liveness analysis consistent.
   UnimplementedError(Func->getContext()->getFlags());
 }