[XRay][NFC] Promote isTailCall() as virtual in TargetInstrInfo.
This change is broken out from D23986, where XRay detects tail call
exits.
llvm-svn: 280331
diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp
index 0ba6dd8..ee5ebfd 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.cpp
+++ b/llvm/lib/Target/X86/X86InstrInfo.cpp
@@ -8061,6 +8061,29 @@
return makeArrayRef(TargetFlags);
}
+bool X86InstrInfo::isTailCall(const MachineInstr &Inst) const {
+ switch (Inst.getOpcode()) {
+ case X86::TCRETURNdi:
+ case X86::TCRETURNmi:
+ case X86::TCRETURNri:
+ case X86::TCRETURNdi64:
+ case X86::TCRETURNmi64:
+ case X86::TCRETURNri64:
+ case X86::TAILJMPd:
+ case X86::TAILJMPm:
+ case X86::TAILJMPr:
+ case X86::TAILJMPd64:
+ case X86::TAILJMPm64:
+ case X86::TAILJMPr64:
+ case X86::TAILJMPd64_REX:
+ case X86::TAILJMPm64_REX:
+ case X86::TAILJMPr64_REX:
+ return true;
+ default:
+ return false;
+ }
+}
+
namespace {
/// Create Global Base Reg pass. This initializes the PIC
/// global base register for x86-32.