Author: Armin Rigo <[email protected]>
Branch: jit-tagged-2
Changeset: r48069:b05d1b6f5dbd
Date: 2011-10-14 18:38 +0200
http://bitbucket.org/pypy/pypy/changeset/b05d1b6f5dbd/
Log: Replace int_lshift_ovf(x, 1) with int_add_ovf(x, x). It's roughly
equivalent for the C backend, but maybe a bit better for the JIT.
diff --git a/pypy/rlib/rerased.py b/pypy/rlib/rerased.py
--- a/pypy/rlib/rerased.py
+++ b/pypy/rlib/rerased.py
@@ -218,7 +218,7 @@
[v_value] = hop.inputargs(lltype.Signed)
c_one = hop.inputconst(lltype.Signed, 1)
hop.exception_is_here()
- v2 = hop.genop('int_lshift_ovf', [v_value, c_one],
+ v2 = hop.genop('int_add_ovf', [v_value, v_value],
resulttype = lltype.Signed)
v2p1 = hop.genop('int_add', [v2, c_one],
resulttype = lltype.Signed)
@@ -264,10 +264,10 @@
return hop.genop('int_rshift', [v2, c_one], resulttype=lltype.Signed)
def rtype_erase_int(self, hop):
- hop.exception_is_here()
[v_value] = hop.inputargs(lltype.Signed)
c_one = hop.inputconst(lltype.Signed, 1)
- v2 = hop.genop('int_lshift_ovf', [v_value, c_one],
+ hop.exception_is_here()
+ v2 = hop.genop('int_add_ovf', [v_value, v_value],
resulttype = lltype.Signed)
v2p1 = hop.genop('int_add', [v2, c_one],
resulttype = lltype.Signed)
diff --git a/pypy/rpython/lltypesystem/rtagged.py
b/pypy/rpython/lltypesystem/rtagged.py
--- a/pypy/rpython/lltypesystem/rtagged.py
+++ b/pypy/rpython/lltypesystem/rtagged.py
@@ -43,7 +43,7 @@
v_value = hop.inputarg(lltype.Signed, arg=1)
c_one = hop.inputconst(lltype.Signed, 1)
hop.exception_is_here()
- v2 = hop.genop('int_lshift_ovf', [v_value, c_one],
+ v2 = hop.genop('int_add_ovf', [v_value, v_value],
resulttype = lltype.Signed)
v2p1 = hop.genop('int_add', [v2, c_one],
resulttype = lltype.Signed)
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