Replace the dynamically computed std::set lookup method for subregisters with a hashtable-based

version that is computed by tblgen at the time LLVM is compiled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52945 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 10 deletions

diff --git a/lib/Target/TargetRegisterInfo.cpp b/lib/Target/TargetRegisterInfo.cpp
index e69496f4b2..3f44a0cb5a 100644
--- a/lib/Target/TargetRegisterInfo.cpp
+++ b/lib/Target/TargetRegisterInfo.cpp
@@ -29,16 +29,6 @@ TargetRegisterInfo::TargetRegisterInfo(const TargetRegisterDesc *D, unsigned NR,
 
   CallFrameSetupOpcode   = CFSO;
   CallFrameDestroyOpcode = CFDO;
-  
-  for (unsigned i = 0; i < NumRegs; ++i) {
-    const TargetRegisterDesc* CurrReg = Desc + i;
-    
-    // Initialize the Subregs set, which stores pairs (a, b) where
-    // b is a subreg of a.
-    if (CurrReg->SubRegs)
-      for (const unsigned* CurrSR = CurrReg->SubRegs; *CurrSR; ++CurrSR)
-        Subregs.insert(std::make_pair(i, *CurrSR));
-  }
 }
 
 TargetRegisterInfo::~TargetRegisterInfo() {}