new triplet for x32 psABI?

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Sorry, resend with plain text format.

Hi, Everyone

As x32 psABI (https://sites.google.com/site/x32abi/) is invented, do
we need a new triplet for system relies on triplet to figure out it's
targeted on x32 environment. The new triplet would look like
'x86_64-unknown-linux-gnux32' for x32 vs 'x86_64-unknown-linux-gnu'
for regular 64-bit. This's similar to EABI added to ARM or PowerPC,
where 'arm-unknown-linux-gnueabi' vs. 'arm-unknown-linux-gnu'.

The new triple doesn't introduce a new target (still x86_64) but just
a new environment 'gnux32' to specify x32 ABI is used for code
generation.

The current scheme documented on website
(https://sites.google.com/site/x32abi/) uses the existing triplet but
specify x32 ABI through compiler/linker options. It works for most
compilers aware of that, but how other tools not handling
compiler/linker options knows the current build is targeted on a
different environment?

Any comments or alternative suggestion?

Yours
- Michael

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