[PATCH] D143039: [AArch64] Unconditionally use DW_EH_PE_indirect|DW_EH_PE_pcrel personality/lsda/ttype encodings

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

In D143039#4097973 <https://reviews.llvm.org/D143039#4097973>, @jyknight wrote:

>> For tiny and small code models, we use DW_EH_PE_sdata8 instead of GCC's
>> DW_EH_PE_sdata4. This is a deliberate choice to support personality-.eh_frame
>> offset > 2GiB.
>
> Does this actually make sense? In small/medium, these are all required to be within 2GB anyways, no?

This is what the existing comment intends to support: if .eh_frame resides at 0x30000000 while personality resides at 0x1000, this is valid small code model (4GiB instead of 2GiB!)

aarch64 small code model supports 4GiB max combined code and data.


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https://reviews.llvm.org/D143039