[llvm] [GlobalISel][AMDGPU] Fix handling of v2i128 type for AND, OR, XOR (PR #138574)

[Chinmay Deshpande via llvm-commits]

================
@@ -875,7 +887,8 @@ AMDGPULegalizerInfo::AMDGPULegalizerInfo(const GCNSubtarget &ST_,
     .legalFor({S32, S1, S64, V2S32, S16, V2S16, V4S16})
     .clampScalar(0, S32, S64)
     .moreElementsIf(isSmallOddVector(0), oneMoreElement(0))
-    .fewerElementsIf(vectorWiderThan(0, 64), fewerEltsToSize64Vector(0))
+    .fewerElementsIf(all(vectorWiderThan(0, 64), scalarOrEltNarrowerThan(0, 64)), fewerEltsToSize64Vector(0))
+    .bitcastIf(all(vectorWiderThan(0, 64), scalarOrEltWiderThan(0, 64)), breakCurrentEltsToSize32Or64(0))
----------------
chinmaydd wrote:

My bad, did not run the formatter.

https://github.com/llvm/llvm-project/pull/138574