[CIR][Test] Add test for vec3 array memory access optimization (#685) #1946
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) Documents how ClangIR handles vec3 array element loads using the vec3->vec4 optimization for aligned memory access. The test shows the pointer cast to vec4, load as vec4, and shuffle back to vec3 pattern in both CIR and LLVM IR. Closes llvm#685
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Documents how ClangIR handles vec3 array element loads using the vec3->vec4 optimization for aligned memory access. The test shows the pointer cast to vec4, load as vec4, and shuffle back to vec3 pattern in both CIR and LLVM IR.
Closes #685