Author: Antonio Cuni <anto.c...@gmail.com>
Branch: gc-hooks
Changeset: r94345:43e5624d7947
Date: 2018-04-16 11:27 +0200
http://bitbucket.org/pypy/pypy/changeset/43e5624d7947/

Log:    add JIT support for rtimer.get_timestamp_unit

diff --git a/rpython/jit/codewriter/jtransform.py 
b/rpython/jit/codewriter/jtransform.py
--- a/rpython/jit/codewriter/jtransform.py
+++ b/rpython/jit/codewriter/jtransform.py
@@ -2164,6 +2164,11 @@
             oopspecindex=EffectInfo.OS_MATH_READ_TIMESTAMP,
             extraeffect=EffectInfo.EF_CANNOT_RAISE)
 
+    def rewrite_op_ll_get_timestamp_unit(self, op):
+        op1 = self.prepare_builtin_call(op, "ll_get_timestamp_unit", [])
+        return self.handle_residual_call(op1,
+            extraeffect=EffectInfo.EF_CANNOT_RAISE)
+
     def rewrite_op_jit_force_quasi_immutable(self, op):
         v_inst, c_fieldname = op.args
         descr1 = self.cpu.fielddescrof(v_inst.concretetype.TO,
diff --git a/rpython/jit/codewriter/support.py 
b/rpython/jit/codewriter/support.py
--- a/rpython/jit/codewriter/support.py
+++ b/rpython/jit/codewriter/support.py
@@ -285,6 +285,9 @@
     from rpython.rlib import rtimer
     return rtimer.read_timestamp()
 
+def _ll_0_ll_get_timestamp_unit():
+    from rpython.rlib import rtimer
+    return rtimer.get_timestamp_unit()
 
 # math support
 # ------------
diff --git a/rpython/jit/metainterp/test/test_ajit.py 
b/rpython/jit/metainterp/test/test_ajit.py
--- a/rpython/jit/metainterp/test/test_ajit.py
+++ b/rpython/jit/metainterp/test/test_ajit.py
@@ -2577,6 +2577,14 @@
         res = self.interp_operations(f, [])
         assert res
 
+    def test_get_timestamp_unit(self):
+        import time
+        from rpython.rlib import rtimer
+        def f():
+            return rtimer.get_timestamp_unit()
+        unit = self.interp_operations(f, [])
+        assert unit == rtimer.UNIT_NS
+
     def test_bug688_multiple_immutable_fields(self):
         myjitdriver = JitDriver(greens=[], reds=['counter','context'])
 
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