implement isStoreToStackSlot for PPC
llvm-svn: 25914
diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
index 322d027..66251c0 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -95,8 +95,25 @@
break;
}
return 0;
- }
+}
+unsigned PPCInstrInfo::isStoreToStackSlot(MachineInstr *MI,
+ int &FrameIndex) const {
+ switch (MI->getOpcode()) {
+ default: break;
+ //case PPC::ST: ?
+ case PPC::STW:
+ case PPC::STFS:
+ case PPC::STFD:
+ if (MI->getOperand(1).isImmediate() && !MI->getOperand(1).getImmedValue() &&
+ MI->getOperand(2).isFrameIndex()) {
+ FrameIndex = MI->getOperand(2).getFrameIndex();
+ return MI->getOperand(0).getReg();
+ }
+ break;
+ }
+ return 0;
+}
// commuteInstruction - We can commute rlwimi instructions, but only if the
// rotate amt is zero. We also have to munge the immediates a bit.