[LLVMdev] tfloat support for mingw-w64

[Martell Malone]

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
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