6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-04-05 17:39:16 +00:00
Code Issues Projects Releases Wiki Activity

[Hexagon] Use pseudo-instructions for true/false predicate values

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232650 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Krzysztof Parzyszek 2015-03-18 17:20:51 +00:00
parent 22a94d59d9
commit 0c2e71367e
1 changed files with 6 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
lib/Target/Hexagon/HexagonISelDAGToDAG.cpp
View File

@ -997,30 +997,13 @@ SDNode *HexagonDAGToDAGISel::SelectConstantFP(SDNode *N) {
SDNode *HexagonDAGToDAGISel::SelectConstant(SDNode *N) {
SDLoc dl(N);
if (N->getValueType(0) == MVT::i1) {
SDNode* Result;
SDNode* Result = 0;
int32_t Val = cast<ConstantSDNode>(N)->getSExtValue();
if (Val == -1) {
// Create the IntReg = 1 node.
SDNode* IntRegTFR =
CurDAG->getMachineNode(Hexagon::A2_tfrsi, dl, MVT::i32,
CurDAG->getTargetConstant(0, MVT::i32));
// Pd = IntReg
SDNode* Pd = CurDAG->getMachineNode(Hexagon::C2_tfrrp, dl, MVT::i1,
SDValue(IntRegTFR, 0));
// not(Pd)
SDNode* NotPd = CurDAG->getMachineNode(Hexagon::C2_not, dl, MVT::i1,
SDValue(Pd, 0));
// xor(not(Pd))
Result = CurDAG->getMachineNode(Hexagon::C2_xor, dl, MVT::i1,
SDValue(Pd, 0), SDValue(NotPd, 0));
// We have just built:
// Rs = Pd
// Pd = xor(not(Pd), Pd)
if (Val == -1)
Result = CurDAG->getMachineNode(Hexagon::TFR_PdTrue, dl, MVT::i1);
else if (Val == 0)
Result = CurDAG->getMachineNode(Hexagon::TFR_PdFalse, dl, MVT::i1);
if (Result) {
ReplaceUses(N, Result);
return Result;
}