Convert EXTRACT_SUBREG to COPY when emitting machine instrs.

EXTRACT_SUBREG no longer appears as a machine instruction. Use COPY instead.

Add isCopy() checks in many places using isMoveInstr() and isExtractSubreg().
The isMoveInstr hook will be removed later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107879 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 5 deletions

diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp
index 35b5b7eab1..ab0bc2d78a 100644
--- a/lib/CodeGen/RegisterCoalescer.cpp
+++ b/lib/CodeGen/RegisterCoalescer.cpp
@@ -49,11 +49,6 @@ bool CoalescerPair::isMoveInstr(const MachineInstr *MI,
     DstSub = MI->getOperand(0).getSubReg();
     Src = MI->getOperand(1).getReg();
     SrcSub = MI->getOperand(1).getSubReg();
-  } else if (MI->isExtractSubreg()) {
-    Dst = MI->getOperand(0).getReg();
-    DstSub = MI->getOperand(0).getSubReg();
-    Src = MI->getOperand(1).getReg();
-    SrcSub = compose(MI->getOperand(1).getSubReg(), MI->getOperand(2).getImm());
   } else if (MI->isSubregToReg()) {
     Dst = MI->getOperand(0).getReg();
     DstSub = compose(MI->getOperand(0).getSubReg(), MI->getOperand(3).getImm());