[pypy-commit] pypy better-jit-hooks: follow fijal's suggestion and raise an explicit exception instead.

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: better-jit-hooks
Changeset: r51245:dcd30a900b17
Date: 2012-01-11 20:07 +0100
http://bitbucket.org/pypy/pypy/changeset/dcd30a900b17/

Log:	follow fijal's suggestion and raise an explicit exception instead.

diff --git a/pypy/jit/backend/x86/assembler.py b/pypy/jit/backend/x86/assembler.py
--- a/pypy/jit/backend/x86/assembler.py
+++ b/pypy/jit/backend/x86/assembler.py
@@ -623,8 +623,7 @@
             # This case should be prevented by the logic in compile.py:
             # look for CNT_BUSY_FLAG, which disables tracing from a guard
             # when another tracing from the same guard is already in progress.
-            raise AssertionError("bug: the front-end asks us to compile a "
-                                 "bridge from the same guard twice")
+            raise BridgeAlreadyCompiled
         # follow the JMP/Jcond
         p = rffi.cast(rffi.INTP, adr_jump_offset)
         adr_target = adr_jump_offset + 4 + rffi.cast(lltype.Signed, p[0])
@@ -2556,3 +2555,6 @@
 def not_implemented(msg):
     os.write(2, '[x86/asm] %s\n' % msg)
     raise NotImplementedError(msg)
+
+class BridgeAlreadyCompiled(Exception):
+    pass