Revert "Make sure we don't promise alignments that are larger than the heap alignment to LLVM (#56938)"

This reverts commit 09704c7.

Author: KristofferC

src/codegen.cpp

@@ -7715,8 +7715,6 @@ static jl_llvm_functions_t
             Type *RT = Arg->getParamStructRetType();
             TypeSize sz = DL.getTypeAllocSize(RT);
             Align al = DL.getPrefTypeAlign(RT);
-            if (al > MAX_ALIGN)
-                al = Align(MAX_ALIGN);
             param.addAttribute(Attribute::NonNull);
             // The `dereferenceable` below does not imply `nonnull` for non addrspace(0) pointers.
             param.addDereferenceableAttr(sz);

src/datatype.c

@@ -648,8 +648,6 @@ void jl_compute_field_offsets(jl_datatype_t *st)
             if (al > alignm)
                 alignm = al;
         }
-        if (alignm > MAX_ALIGN)
-            alignm = MAX_ALIGN; // We cannot guarantee alignments over 16 bytes because that's what our heap is aligned as
         if (LLT_ALIGN(sz, alignm) > sz) {
             haspadding = 1;
             sz = LLT_ALIGN(sz, alignm);

test/compiler/codegen.jl

@@ -873,9 +873,3 @@ end
 
 # Core.getptls() special handling
 @test !occursin("call ptr @jlplt", get_llvm(Core.getptls, Tuple{})) #It should lower to a direct load of the ptls and not a ccall
-
-
-struct Vec56937 x::NTuple{8, VecElement{Int}} end
-
-x56937 = Ref(Vec56937(ntuple(_->VecElement(1),8)))
-@test x56937[].x[1] == VecElement{Int}(1) # shouldn't crash