FastEmitInst_extractsubreg doesn't need to be passed the register class. It can get it from MachineRegisterInfo instead.

llvm-svn: 55476

2 files changed, 3 insertions, 4 deletions

diff --git a/llvm/include/llvm/CodeGen/FastISel.h b/llvm/include/llvm/CodeGen/FastISel.h
index fcd970b8404..20a923b1de9 100644
--- a/llvm/include/llvm/CodeGen/FastISel.h
+++ b/llvm/include/llvm/CodeGen/FastISel.h
@@ -195,8 +195,7 @@ protected:
 
   /// FastEmitInst_extractsubreg - Emit a MachineInstr for an extract_subreg
   /// from a specified index of a superregister.
-  unsigned FastEmitInst_extractsubreg(const TargetRegisterClass *RC,
-                                      unsigned Op0, uint32_t Idx);
+  unsigned FastEmitInst_extractsubreg(unsigned Op0, uint32_t Idx);
 
 private:
   unsigned getRegForValue(Value *V,
diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index 2dd228249b3..4dbfadcd160 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -587,8 +587,8 @@ unsigned FastISel::FastEmitInst_i(unsigned MachineInstOpcode,
   return ResultReg;
 }
 
-unsigned FastISel::FastEmitInst_extractsubreg(const TargetRegisterClass *RC,
-                                              unsigned Op0, uint32_t Idx) {
+unsigned FastISel::FastEmitInst_extractsubreg(unsigned Op0, uint32_t Idx) {
+  const TargetRegisterClass* RC = MRI.getRegClass(Op0);
   const TargetRegisterClass* SRC = *(RC->subregclasses_begin()+Idx-1);
   
   unsigned ResultReg = createResultReg(SRC);