llvm-mc: Add a -mc-relax-all option, which relaxes every fixup. We always need

exactly two passes in that case, and don't ever need to recompute any layout,
so this is a nice baseline for relaxation performance.

llvm-svn: 99563

2 files changed, 6 insertions, 1 deletions

diff --git a/llvm/include/llvm/MC/MCAssembler.h b/llvm/include/llvm/MC/MCAssembler.h
index 031ca18d748..c1b60f011fd 100644
--- a/llvm/include/llvm/MC/MCAssembler.h
+++ b/llvm/include/llvm/MC/MCAssembler.h
@@ -624,6 +624,7 @@ private:
 
   std::vector<IndirectSymbolData> IndirectSymbols;
 
+  unsigned RelaxAll : 1;
   unsigned SubsectionsViaSymbols : 1;
 
 private:
@@ -727,6 +728,9 @@ public:
     SubsectionsViaSymbols = Value;
   }
 
+  bool getRelaxAll() const { return RelaxAll; }
+  void setRelaxAll(bool Value) { RelaxAll = Value; }
+
   /// @name Section List Access
   /// @{
 
diff --git a/llvm/include/llvm/MC/MCStreamer.h b/llvm/include/llvm/MC/MCStreamer.h
index ce67b3aebfd..bdcfdb2debe 100644
--- a/llvm/include/llvm/MC/MCStreamer.h
+++ b/llvm/include/llvm/MC/MCStreamer.h
@@ -308,7 +308,8 @@ class TargetAsmBackend;
   /// createMachOStream - Create a machine code streamer which will generative
   /// Mach-O format object files.
   MCStreamer *createMachOStreamer(MCContext &Ctx, TargetAsmBackend &TAB,
-                                  raw_ostream &OS, MCCodeEmitter *CE);
+                                  raw_ostream &OS, MCCodeEmitter *CE,
+                                  bool RelaxAll = false);
 
 } // end namespace llvm