[llvm] [DAGCombiner][AMDGPU] Track signedness in ByteProviders (PR #65995)

[Matt Arsenault via llvm-commits]

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@@ -10513,7 +10513,7 @@ SDValue SITargetLowering::performAndCombine(SDNode *N,
 // performed.
 static const std::optional<ByteProvider<SDValue>>
 calculateSrcByte(const SDValue Op, uint64_t DestByte, uint64_t SrcIndex = 0,
-                 unsigned Depth = 0) {
+                 bool IsSigned = 0, unsigned Depth = 0) {
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arsenm wrote:

= false

https://github.com/llvm/llvm-project/pull/65995