Add an MF argument to TRI::getPointerRegClass() and TII::getRegClass().
The getPointerRegClass() hook can return register classes that depend on
the calling convention of the current function (ptr_rc_tailcall).
So far, we have been able to infer the calling convention from the
subtarget alone, but as we add support for multiple calling conventions
per target, that no longer works.
Patch by Yiannis Tsiouris!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156328 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 594482e..9cffc6d 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -942,9 +942,13 @@
MachineInstr::getRegClassConstraint(unsigned OpIdx,
const TargetInstrInfo *TII,
const TargetRegisterInfo *TRI) const {
+ assert(getParent() && "Can't have an MBB reference here!");
+ assert(getParent()->getParent() && "Can't have an MF reference here!");
+ const MachineFunction &MF = *getParent()->getParent();
+
// Most opcodes have fixed constraints in their MCInstrDesc.
if (!isInlineAsm())
- return TII->getRegClass(getDesc(), OpIdx, TRI);
+ return TII->getRegClass(getDesc(), OpIdx, TRI, MF);
if (!getOperand(OpIdx).isReg())
return NULL;
@@ -966,7 +970,7 @@
// Assume that all registers in a memory operand are pointers.
if (InlineAsm::getKind(Flag) == InlineAsm::Kind_Mem)
- return TRI->getPointerRegClass();
+ return TRI->getPointerRegClass(MF);
return NULL;
}