================
@@ -15740,6 +15740,32 @@ void
SITargetLowering::finalizeLowering(MachineFunction &MF) const {
}
}
+ // ISel inserts copy to regs for the successor PHIs
+ // at the BB end. We need to move the SI_WAVE_RECONVERGE right before the
+ // branch.
+ for (auto &MBB : MF) {
+ for (auto &MI : MBB) {
+ if (MI.getOpcode() == AMDGPU::SI_WAVE_RECONVERGE) {
+ MachineBasicBlock::iterator I(MI);
+ MachineBasicBlock::iterator Next = std::next(I);
+ bool NeedToMove = false;
+ while (Next != MBB.end() && !Next->isBranch()) {
+ NeedToMove = true;
+ Next++;
+ }
+
+ assert((Next == MBB.end() || !Next->readsRegister(AMDGPU::SCC, TRI)) &&
+ "Malformed CFG detected!\n");
----------------
arsenm wrote:
No newline in the string, this isn't real printing
https://github.com/llvm/llvm-project/pull/92809
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