[LLVMdev] tfloat support for mingw-w64 (original) (raw)

Martell Malone martellmalone at gmail.com
Mon Jul 27 09:10:52 PDT 2015

Hi,

I've been hacking around something missing in the assemble for the mingw-w64 targets the tfloat variable.

I did some research into the llvm sources and did see x86_fp80 which seems to be the same thing. Can we support the .tfloat variable or the alternative ? Or is it under another name? I've tried using .x86_fp80 instead but to no avail. :/

Here is how tfloat is being used in mingw-w64 and how I am hacking around it with a very dirty .double

Date: Wed, 1 Jul 2015 02:53:22 +0100 Subject: [PATCH 3/4] clang fixes and hacks diff --git a/mingw-w64-crt/math/log1pl.S b/mingw-w64-crt/math/log1pl.S --- a/mingw-w64-crt/math/log1pl.S +++ b/mingw-w64-crt/math/log1pl.S @@ -16,7 +16,11 @@ -1 + sqrt(2) / 2 <= x <= 1 - sqrt(2) / 2 0.29 is a safe value. / +#ifdef clang +limit: .double 0.29 // must enable .x86_fp80 for windows :) +#else // double is very dirrrrty limit: .tfloat 0.29 +#endif / Please note: we use a double value here. Since 1.0 has an exact representation this does not effect the accuracy but it helps to optimize the code. */

Many Thanks Martell -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150727/8fa8d444/attachment.html>

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