[llvm] [LoongArch] Use getSignedConstant() where necessary (PR #117172)

[Nikita Popov via llvm-commits]

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@@ -1787,6 +1787,12 @@ SDValue SelectionDAG::getIntPtrConstant(uint64_t Val, const SDLoc &DL,
   return getConstant(Val, DL, TLI->getPointerTy(getDataLayout()), isTarget);
 }
 
+SDValue SelectionDAG::getSignedIntPtrConstant(int64_t Val, const SDLoc &DL,
+                                              bool isTarget) {
+  return getSignedConstant(Val, DL, TLI->getPointerTy(getDataLayout()),
+                           isTarget);
+}
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nikic wrote:

This is just a signed copy of an existing API. But I just dropped it again -- it's just the one call and we already have the right VT there anyway, so there's really no benefit to having this...

https://github.com/llvm/llvm-project/pull/117172