Move some flag-like props from GlobalContext and TargetLowering to ClFlags.

src/IceCfg.cpp

Index: src/IceCfg.cpp
diff --git a/src/IceCfg.cpp b/src/IceCfg.cpp
index 2a1fdb68d52291e4f5e83d6ca1357621f49d3862..e6a9cabe9007615ec1a8e2ac0a9c10c55691f1c0 100644
--- a/src/IceCfg.cpp
+++ b/src/IceCfg.cpp
@@ -32,15 +32,16 @@ ArenaAllocator<> *getCurrentCfgAllocator() {
 }
 
 Cfg::Cfg(GlobalContext *Ctx, uint32_t SequenceNumber)
-    : Ctx(Ctx), SequenceNumber(SequenceNumber), VMask(Ctx->getVerbose()),
-      FunctionName(""), ReturnType(IceType_void), IsInternalLinkage(false),
-      HasError(false), FocusedTiming(false), ErrorMessage(""), Entry(nullptr),
+    : Ctx(Ctx), SequenceNumber(SequenceNumber),
+      VMask(Ctx->getFlags().getVerbose()), FunctionName(""),
+      ReturnType(IceType_void), IsInternalLinkage(false), HasError(false),
+      FocusedTiming(false), ErrorMessage(""), Entry(nullptr),
       NextInstNumber(Inst::NumberInitial), Allocator(new ArenaAllocator<>()),
-      Live(nullptr),
-      Target(TargetLowering::createLowering(Ctx->getTargetArch(), this)),
+      Live(nullptr), Target(TargetLowering::createLowering(
+                         Ctx->getFlags().getTargetArch(), this)),
       VMetadata(new VariablesMetadata(this)),
-      TargetAssembler(
-          TargetLowering::createAssembler(Ctx->getTargetArch(), this)),
+      TargetAssembler(TargetLowering::createAssembler(
+          Ctx->getFlags().getTargetArch(), this)),
       CurrentNode(nullptr) {
   assert(!Ctx->isIRGenerationDisabled() &&
          "Attempt to build cfg when IR generation disabled");