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The actual ABI implication here is that in some cases the values are required to be "consecutive", i.e. must either all be passed in registers or all on stack (without padding). Adjust the code to either use Uniform::new() or Uniform::consecutive() depending on which behavior is needed. Then, when lowering this in LLVM, skip the [1 x i128] to i128 simplification if is_consecutive is set. i128 is the only case I'm aware of where this is problematic right now. If we find other cases, we can extend this (either based on target information or possibly just by not simplifying for is_consecutive entirely). |
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This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
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