[pypy-commit] pypy default: doc precision from the stm branch

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: 
Changeset: r76011:acab03818b23
Date: 2015-02-20 12:19 +0100
http://bitbucket.org/pypy/pypy/changeset/acab03818b23/

Log:	doc precision from the stm branch

diff --git a/rpython/jit/backend/x86/callbuilder.py b/rpython/jit/backend/x86/callbuilder.py
--- a/rpython/jit/backend/x86/callbuilder.py
+++ b/rpython/jit/backend/x86/callbuilder.py
@@ -326,8 +326,8 @@
             # in 'ebx'), and if not, we fall back to 'reacqgil_addr'.
             mc.J_il8(rx86.Conditions['NE'], 0)
             jne_location = mc.get_relative_pos()
-            # here, ecx is zero (so rpy_fastgil was in 'released' state
-            # before the XCHG, but the XCHG acquired it by writing 1)
+            # here, ecx (=old_value) is zero (so rpy_fastgil was in 'released'
+            # state before the XCHG, but the XCHG acquired it by writing 1)
             rst = gcrootmap.get_root_stack_top_addr()
             mc = self.mc
             mc.CMP(ebx, heap(rst))