[llvm-branch-commits] [llvm] [InlineSpiller][AMDGPU] Implement subreg reload during RA spill (PR #175002)

[Christudasan Devadasan via llvm-branch-commits]

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@@ -1215,6 +1215,7 @@ class LLVM_ABI TargetInstrInfo : public MCInstrInfo {
   virtual void loadRegFromStackSlot(
       MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, Register DestReg,
       int FrameIndex, const TargetRegisterClass *RC, Register VReg,
+      unsigned SubReg = 0,
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cdevadas wrote:

Tried to insert a new branch just before this branch to factor out the generic code introduced in the target hook loadRegFromStackSlot to add the extra argument SugReg. The graphite failed when I tried to submit the new stack.
ERROR: Failed to retarget PR: Failed to create ref: Reference update failed.
It is quite annoying that a new branch can't be inserted into an existing PR stack.


https://github.com/llvm/llvm-project/pull/175002