Skip to content

release/21.x: [RISCV] Remove incorrect and untested FrameIndex support from SelectAddrRegImm9. (#148779) #148913

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jul 17, 2025
Merged

release/21.x: [RISCV] Remove incorrect and untested FrameIndex support from SelectAddrRegImm9. (#148779) #148913

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 4 additions & 4 deletions llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2936,8 +2936,8 @@ bool RISCVDAGToDAGISel::SelectAddrRegImm(SDValue Addr, SDValue &Base,
/// Similar to SelectAddrRegImm, except that the offset is restricted to uimm9.
bool RISCVDAGToDAGISel::SelectAddrRegImm9(SDValue Addr, SDValue &Base,
SDValue &Offset) {
if (SelectAddrFrameIndex(Addr, Base, Offset))
return true;
// FIXME: Support FrameIndex. Need to teach eliminateFrameIndex that only
// a 9-bit immediate can be folded.

SDLoc DL(Addr);
MVT VT = Addr.getSimpleValueType();
Expand All @@ -2947,8 +2947,8 @@ bool RISCVDAGToDAGISel::SelectAddrRegImm9(SDValue Addr, SDValue &Base,
if (isUInt<9>(CVal)) {
Base = Addr.getOperand(0);

if (auto *FIN = dyn_cast<FrameIndexSDNode>(Base))
Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), VT);
// FIXME: Support FrameIndex. Need to teach eliminateFrameIndex that only
// a 9-bit immediate can be folded.
Offset = CurDAG->getSignedTargetConstant(CVal, DL, VT);
return true;
}
Expand Down
Loading