content/static/doc: update install docs for 387->softfloat transition
Fixes golang/go#41861
Change-Id: Ib24851e4423d63cc7baa7bee176798f6eb35364d
Reviewed-on: https://go-review.googlesource.com/c/website/+/260700
Trust: Keith Randall <khr@golang.org>
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
diff --git a/content/static/doc/install-source.html b/content/static/doc/install-source.html
index 9f7b6c5..c1db421 100644
--- a/content/static/doc/install-source.html
+++ b/content/static/doc/install-source.html
@@ -662,16 +662,13 @@
<code>arm</code> on an x86 system.
</p>
-<li><code>$GO386</code> (for <code>386</code> only, default is auto-detected
-if built on either <code>386</code> or <code>amd64</code>, <code>387</code> otherwise)
+<li><code>$GO386</code> (for <code>386</code> only, defaults to <code>sse2</code>)
<p>
-This controls the code generated by gc to use either the 387 floating-point unit
-(set to <code>387</code>) or SSE2 instructions (set to <code>sse2</code>) for
-floating point computations.
+This variable controls how gc implements floating point computations.
</p>
<ul>
- <li><code>GO386=387</code>: use x87 for floating point operations; should support all x86 chips (Pentium MMX or later).</li>
- <li><code>GO386=sse2</code>: use SSE2 for floating point operations; has better performance than 387, but only available on Pentium 4/Opteron/Athlon 64 or later.</li>
+ <li><code>GO386=softfloat</code>: use software floating point operations; should support all x86 chips (Pentium MMX or later).</li>
+ <li><code>GO386=sse2</code>: use SSE2 for floating point operations; has better performance but only available on Pentium 4/Opteron/Athlon 64 or later.</li>
</ul>
</li>
