Author: Richard Plangger <[email protected]>
Branch: vecopt
Changeset: r78584:0d1dc4ba30d3
Date: 2015-07-17 17:19 +0200
http://bitbucket.org/pypy/pypy/changeset/0d1dc4ba30d3/
Log: trace versioning now compiles each version just once, and attaches
patches all further guards to the bridge
diff --git a/rpython/jit/backend/llsupport/assembler.py
b/rpython/jit/backend/llsupport/assembler.py
--- a/rpython/jit/backend/llsupport/assembler.py
+++ b/rpython/jit/backend/llsupport/assembler.py
@@ -69,6 +69,9 @@
self.rtyper = cpu.rtyper
self._debug = False
+ def attach_bridge(self, failargs, token):
+ raise NotImplementedError
+
def setup_once(self):
# the address of the function called by 'new'
gc_ll_descr = self.cpu.gc_ll_descr
diff --git a/rpython/jit/backend/llsupport/llmodel.py
b/rpython/jit/backend/llsupport/llmodel.py
--- a/rpython/jit/backend/llsupport/llmodel.py
+++ b/rpython/jit/backend/llsupport/llmodel.py
@@ -97,6 +97,9 @@
inputargs, operations,
looptoken, log=log)
+ def attach_bridge(self, faildescr, token):
+ self.assembler.attach_bridge(faildescr, token)
+
def _setup_frame_realloc(self, translate_support_code):
FUNC_TP = lltype.Ptr(lltype.FuncType([llmemory.GCREF, lltype.Signed],
llmemory.GCREF))
diff --git a/rpython/jit/backend/x86/assembler.py
b/rpython/jit/backend/x86/assembler.py
--- a/rpython/jit/backend/x86/assembler.py
+++ b/rpython/jit/backend/x86/assembler.py
@@ -589,6 +589,10 @@
rawstart, fullsize)
return AsmInfo(ops_offset, startpos + rawstart, codeendpos - startpos)
+ def attach_bridge(self, failargs, token):
+ rawstart = self.materialize_loop(token)
+ self.patch_jump_for_descr(faildescr, rawstart)
+
def write_pending_failure_recoveries(self, regalloc):
# for each pending guard, generate the code of the recovery stub
# at the end of self.mc.
diff --git a/rpython/jit/metainterp/compile.py
b/rpython/jit/metainterp/compile.py
--- a/rpython/jit/metainterp/compile.py
+++ b/rpython/jit/metainterp/compile.py
@@ -199,17 +199,19 @@
if loop.versions is not None:
token = jitcell_token
for version in loop.versions:
- for i, faildescr in enumerate(version.faildescrs):
- vl = create_empty_loop(metainterp)
- vl.inputargs = version.inputargs
- vl.operations = version.operations
- if i > 0:
- vl.operations = vl.copy_operations()
- vl.original_jitcell_token = jitcell_token
- send_bridge_to_backend(jitdriver_sd, metainterp_sd,
- faildescr, version.inputargs,
- version.operations, jitcell_token)
- record_loop_or_bridge(metainterp_sd, vl)
+ if len(version.faildescrs) == 0:
+ continue
+ faildescr = version.faildescrs[0]
+ vl = create_empty_loop(metainterp)
+ vl.inputargs = version.inputargs
+ vl.operations = version.operations
+ vl.original_jitcell_token = jitcell_token
+ send_bridge_to_backend(jitdriver_sd, metainterp_sd,
+ faildescr, version.inputargs,
+ version.operations, jitcell_token)
+ record_loop_or_bridge(metainterp_sd, vl)
+ for faildescr in version.faildescrs[1:]:
+ cpu.attach_bridge(faildescr, jitcell_token)
loop.versions = None
def compile_retrace(metainterp, greenkey, start,
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