Juan Manuel MARTINEZ CAAMAÑO abe6ecd7e5 [AsmPrinter][AMDGPU] Generate uwtable entries in .eh_frame ...

Consider only targets where `MCAsmInfo::ExceptionsType == ExceptionHandling::None`
and that support CFI (when `MCAsmInfo::UsesCFIForDebug` is set to true):
currently, only AMDGPU.

This patch enables the emission of CFI information in the .eh_frame
section when the uwtable attribute is present on a function.

Before, we could generate CFI information for debugging puproses only.

This patch prepares AMDGPU to support collecting GPU stack traces in the future.

I did a first implementation (https://reviews.llvm.org/D139024)
but at the time I had not realized that no other platform used
`UsesCFIForDebug`.

Reviewed By: scott.linder

Differential Revision: https://reviews.llvm.org/D151806

2023-06-07 09:54:47 +02:00

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