[LLVMdev] Support for Soft-float

[Asiri Rathnayake]

And, Apologies for the footer. Wrong account.

Best,

- Asiri

-----Original Message-----
From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On
Behalf Of Asiri Rathnayake
Sent: 25 September 2014 10:48
To: Eric Cheng; llvmdev at cs.uiuc.edu
Subject: Re: [LLVMdev] Support for Soft-float

Hi Eric,

> Running "clang -c -emit-llvm -msoft-float test.c -o test.bc" doesn't
generate IR with soft-float library calls (perhaps understandably) - only
hard float instructions. I would expect the frontend to at least be able to
generate the library calls even though I'm not asking it to link to any
library yet.

I think you have to explicitly pass the target. For an example:

./clang -c -emit-llvm -msoft-float test.c -o test.bc -###

Does not show -msoft-float passed into the backend. Whereas the following
invocation does:

./clang -target sparc-none-linux-gnu -c -emit-llvm -msoft-float test.c -o
test.bc -###

May be give this a try and see if it produces the correct lib calls?

I happened to be working on something related (for ARM).

- Asiri

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