add support for storing and returning bools
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24228 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/IA64/IA64ISelDAGToDAG.cpp b/lib/Target/IA64/IA64ISelDAGToDAG.cpp
index 0b228c1..cc136b6 100644
--- a/lib/Target/IA64/IA64ISelDAGToDAG.cpp
+++ b/lib/Target/IA64/IA64ISelDAGToDAG.cpp
@@ -301,6 +301,16 @@
switch (N->getValueType(0)) {
default: assert(0 && "Unexpected ret value!");
case MVT::Other: break;
+ case MVT::i1: {
+ // bools are returned as bytes 0/1 in r8
+ SDOperand byteval = CurDAG->getCopyFromReg(Chain, IA64::r8, MVT::i64,
+ Chain.getValue(1));
+ Chain = byteval.getValue(1);
+ Chain = CurDAG->getTargetNode(IA64::CMPNE, MVT::i1, MVT::Other,
+ byteval, CurDAG->getRegister(IA64::r0, MVT::i64)).getValue(1);
+ CallResults.push_back(Chain.getValue(0));
+ break;
+ }
case MVT::i64:
Chain = CurDAG->getCopyFromReg(Chain, IA64::r8, MVT::i64,
Chain.getValue(1)).getValue(1);
@@ -422,17 +432,28 @@
case ISD::TRUNCSTORE:
case ISD::STORE: {
SDOperand Address = Select(N->getOperand(2));
-
+ SDOperand Chain = Select(N->getOperand(0));
+
unsigned Opc;
if (N->getOpcode() == ISD::STORE) {
switch (N->getOperand(1).getValueType()) {
- default: assert(0 && "unknown Type in store");
+ default: assert(0 && "unknown type in store");
+ case MVT::i1: { // this is a bool
+ Opc = IA64::ST1; // we store either 0 or 1 as a byte
+ CurDAG->SelectNodeTo(N, Opc, MVT::Other, Address,
+ CurDAG->getTargetNode(IA64::PADDS, MVT::i64,
+ CurDAG->getRegister(IA64::r0, MVT::i64),
+ CurDAG->getConstant(1, MVT::i64),
+ Select(N->getOperand(1))),
+ Chain);
+ return SDOperand(N, 0); // XXX: early exit
+ }
case MVT::i64: Opc = IA64::ST8; break;
case MVT::f64: Opc = IA64::STF8; break;
- }
+ }
} else { //ISD::TRUNCSTORE
switch(cast<VTSDNode>(N->getOperand(4))->getVT()) {
- default: assert(0 && "unknown Type in store");
+ default: assert(0 && "unknown type in truncstore");
case MVT::i8: Opc = IA64::ST1; break;
case MVT::i16: Opc = IA64::ST2; break;
case MVT::i32: Opc = IA64::ST4; break;
@@ -441,7 +462,7 @@
}
CurDAG->SelectNodeTo(N, Opc, MVT::Other, Select(N->getOperand(2)),
- Select(N->getOperand(1)), Select(N->getOperand(0)));
+ Select(N->getOperand(1)), Chain);
return SDOperand(N, 0);
}