Remove many calls to TII::isMoveInstr. Targets should be producing COPY anyway.
TII::isMoveInstr is going tobe completely removed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108507 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TailDuplication.cpp b/lib/CodeGen/TailDuplication.cpp
index 075db80..aac8a0a 100644
--- a/lib/CodeGen/TailDuplication.cpp
+++ b/lib/CodeGen/TailDuplication.cpp
@@ -254,14 +254,15 @@
// SSA form.
for (unsigned i = 0, e = Copies.size(); i != e; ++i) {
MachineInstr *Copy = Copies[i];
- unsigned Src, Dst, SrcSR, DstSR;
- if (TII->isMoveInstr(*Copy, Src, Dst, SrcSR, DstSR)) {
- MachineRegisterInfo::use_iterator UI = MRI->use_begin(Src);
- if (++UI == MRI->use_end()) {
- // Copy is the only use. Do trivial copy propagation here.
- MRI->replaceRegWith(Dst, Src);
- Copy->eraseFromParent();
- }
+ if (!Copy->isCopy())
+ continue;
+ unsigned Dst = Copy->getOperand(0).getReg();
+ unsigned Src = Copy->getOperand(1).getReg();
+ MachineRegisterInfo::use_iterator UI = MRI->use_begin(Src);
+ if (++UI == MRI->use_end()) {
+ // Copy is the only use. Do trivial copy propagation here.
+ MRI->replaceRegWith(Dst, Src);
+ Copy->eraseFromParent();
}
}