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

src/IceTargetLoweringX8632.cpp

Index: src/IceTargetLoweringX8632.cpp
diff --git a/src/IceTargetLoweringX8632.cpp b/src/IceTargetLoweringX8632.cpp
index df7d04f591fb487293b29f8d21352219ce5112a5..43d72617a548c867b12503046a44731c22c624e1 100644
--- a/src/IceTargetLoweringX8632.cpp
+++ b/src/IceTargetLoweringX8632.cpp
@@ -392,7 +392,6 @@ void TargetX8632::translateO2() {
     return;
   Func->dump("After stack frame mapping");
 
-  Func->deleteRedundantAssignments();
   Func->contractEmptyNodes();
   Func->reorderNodes();
 
@@ -435,8 +434,6 @@ void TargetX8632::translateOm1() {
     return;
   Func->dump("After stack frame mapping");
 
-  Func->deleteRedundantAssignments();
-
   // Nop insertion
   if (shouldDoNopInsertion()) {
     Func->doNopInsertion();