From 7d87049ef1fec70650b0c36ab3e9251add112675 Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@gmail.com>
Date: Tue, 13 May 2014 20:49:08 +0000
Subject: [PATCH] Save the optimization level the subtarget was created with in
 a member variable and sink the initialization of crbits into the subtarget
 feature reset code.

No functional change, but this refactor will be used in a future
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208726 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PowerPC/PPCSubtarget.cpp | 26 +++++++++++---------------
 lib/Target/PowerPC/PPCSubtarget.h   |  3 +++
 2 files changed, 14 insertions(+), 15 deletions(-)

diff --git a/lib/Target/PowerPC/PPCSubtarget.cpp b/lib/Target/PowerPC/PPCSubtarget.cpp
index d02914cf37f3..ea9daee4f8e8 100644
--- a/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -35,22 +35,10 @@ using namespace llvm;
 PPCSubtarget::PPCSubtarget(const std::string &TT, const std::string &CPU,
                            const std::string &FS, bool is64Bit,
                            CodeGenOpt::Level OptLevel)
-  : PPCGenSubtargetInfo(TT, CPU, FS)
-  , IsPPC64(is64Bit)
-  , TargetTriple(TT) {
+    : PPCGenSubtargetInfo(TT, CPU, FS), IsPPC64(is64Bit), TargetTriple(TT),
+      OptLevel(OptLevel) {
   initializeEnvironment();
-
-  std::string FullFS = FS;
-
-  // At -O2 and above, track CR bits as individual registers.
-  if (OptLevel >= CodeGenOpt::Default) {
-    if (!FullFS.empty())
-      FullFS = "+crbits," + FullFS;
-    else
-      FullFS = "+crbits";
-  }
-
-  resetSubtargetFeatures(CPU, FullFS);
+  resetSubtargetFeatures(CPU, FS);
 }
 
 /// SetJITMode - This is called to inform the subtarget info that we are
@@ -140,6 +128,14 @@ void PPCSubtarget::resetSubtargetFeatures(StringRef CPU, StringRef FS) {
       FullFS = "+64bit";
   }
 
+  // At -O2 and above, track CR bits as individual registers.
+  if (OptLevel >= CodeGenOpt::Default) {
+    if (!FullFS.empty())
+      FullFS = "+crbits," + FullFS;
+    else
+      FullFS = "+crbits";
+  }
+
   // Parse features string.
   ParseSubtargetFeatures(CPUName, FullFS);
 
diff --git a/lib/Target/PowerPC/PPCSubtarget.h b/lib/Target/PowerPC/PPCSubtarget.h
index 75dff0679fc3..76f4a318e82d 100644
--- a/lib/Target/PowerPC/PPCSubtarget.h
+++ b/lib/Target/PowerPC/PPCSubtarget.h
@@ -99,6 +99,9 @@ class PPCSubtarget : public PPCGenSubtargetInfo {
   /// TargetTriple - What processor and OS we're targeting.
   Triple TargetTriple;
 
+  /// OptLevel - What default optimization level we're emitting code for.
+  CodeGenOpt::Level OptLevel;
+
 public:
   /// This constructor initializes the data members to match that
   /// of the specified triple.