Second attempt:

Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to
use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.

Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'll change the JIT with a follow-up patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70343 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/AsmPrinter.h

@@ -65,8 +65,8 @@ namespace llvm {
     // Necessary for external weak linkage support
     std::set<const GlobalValue*> ExtWeakSymbols;
 
-    /// Fast - Generating code via fast instruction selection.
-    bool Fast;
+    /// OptLevel - Generating code at a specific optimization level.
+    unsigned OptLevel;
   public:
     /// Output stream on which we're printing assembly code.
     ///
@@ -110,8 +110,8 @@ namespace llvm {
     bool VerboseAsm;
 
   protected:
-    AsmPrinter(raw_ostream &o, TargetMachine &TM,
-               const TargetAsmInfo *T, bool F, bool V);
+    explicit AsmPrinter(raw_ostream &o, TargetMachine &TM,
+                        const TargetAsmInfo *T, unsigned OL, bool V);
     
   public:
     virtual ~AsmPrinter();