Code cleanup, pylint, updated README, CHANGELOG
git-svn-id: http://llvm-py.googlecode.com/svn/trunk@67 8d1e9007-1d4e-0410-b67e-1979fd6579aa
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13 changed files with 1055 additions and 922 deletions
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#!/usr/bin/env python
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# Import the llvm-py modules.
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from llvm import *
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from llvm.core import *
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# Create an (empty) module.
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my_module = Module.new('my_module')
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# All the types involved here are "int"s. This type is represented
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# by an object of the llvm.core.Type class:
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ty_int = Type.int() # by default 32 bits
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# We need to represent the class of functions that accept two integers
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# and return an integer. This is represented by an object of the
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# function type (llvm.core.FunctionType):
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ty_func = Type.function(ty_int, [ty_int, ty_int])
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# Now we need a function named 'sum' of this type. Functions are not
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# free-standing (in llvm-py); it needs to be contained in a module.
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f_sum = my_module.add_function(ty_func, "sum")
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# Let's name the function arguments as 'a' and 'b'.
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f_sum.args[0].name = "a"
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f_sum.args[1].name = "b"
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# Our function needs a "basic block" -- a set of instructions that
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# end with a terminator (like return, branch etc.). By convention
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# the first block is called "entry".
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bb = f_sum.append_basic_block("entry")
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# Let's add instructions into the block. For this, we need an
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# instruction builder:
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builder = Builder.new(bb)
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# OK, now for the instructions themselves. We'll create an add
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# instruction that returns the sum as a value, which we'll use
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# a ret instruction to return.
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tmp = builder.add(f_sum.args[0], f_sum.args[1], "tmp")
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builder.ret(tmp)
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# We've completed the definition now! Let's see the LLVM assembly
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# language representation of what we've created:
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print my_module
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#!/usr/bin/env python
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# Import the llvm-py modules.
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from llvm import *
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from llvm.core import *
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# Create an (empty) module.
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my_module = Module.new('my_module')
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# All the types involved here are "int"s. This type is represented
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# by an object of the llvm.core.Type class:
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ty_int = Type.int() # by default 32 bits
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# We need to represent the class of functions that accept two integers
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# and return an integer. This is represented by an object of the
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# function type (llvm.core.FunctionType):
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ty_func = Type.function(ty_int, [ty_int, ty_int])
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# Now we need a function named 'sum' of this type. Functions are not
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# free-standing (in llvm-py); it needs to be contained in a module.
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f_sum = my_module.add_function(ty_func, "sum")
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# Let's name the function arguments as 'a' and 'b'.
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f_sum.args[0].name = "a"
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f_sum.args[1].name = "b"
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# Our function needs a "basic block" -- a set of instructions that
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# end with a terminator (like return, branch etc.). By convention
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# the first block is called "entry".
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bb = f_sum.append_basic_block("entry")
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# Let's add instructions into the block. For this, we need an
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# instruction builder:
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builder = Builder.new(bb)
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# OK, now for the instructions themselves. We'll create an add
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# instruction that returns the sum as a value, which we'll use
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# a ret instruction to return.
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tmp = builder.add(f_sum.args[0], f_sum.args[1], "tmp")
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builder.ret(tmp)
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# We've completed the definition now! Let's see the LLVM assembly
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# language representation of what we've created:
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print my_module
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@ -1,3 +1,4 @@
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#!/usr/bin/env python
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from llvm.core import *
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import llvm._core
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@ -1,48 +1,48 @@
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#!/usr/bin/env python
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# Tests accessing of instruction operands.
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from llvm.core import *
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#===----------------------------------------------------------------------===
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# implement a test function
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def make_function():
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test_module = """
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define i32 @prod(i32, i32) {
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entry:
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%2 = mul i32 %0, %1
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ret i32 %2
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}
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define i32 @test_func(i32, i32, i32) {
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entry:
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%tmp1 = call i32 @prod(i32 %0, i32 %1)
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%tmp2 = add i32 %tmp1, %2
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%tmp3 = add i32 %tmp2, 1
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ret i32 %tmp3
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}
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"""
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class strstream(object):
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def __init__(self): pass
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def read(self): return test_module
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m = Module.from_assembly(strstream())
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print "-"*60
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print m
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print "-"*60
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print "Examining function `test_func':"
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return m.get_function_named("test_func")
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#===----------------------------------------------------------------------===
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func = make_function()
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idx = 1
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for inst in func.basic_blocks[0].instructions:
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print "Instruction #%d:" % (idx,)
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print " operand_count =", inst.operand_count
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print " operands:"
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oidx = 1
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for op in inst.operands:
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print " %d: %s" % (oidx, repr(op))
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oidx += 1
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idx += 1
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#!/usr/bin/env python
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# Tests accessing of instruction operands.
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from llvm.core import *
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#===----------------------------------------------------------------------===
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# implement a test function
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def make_function():
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test_module = """
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define i32 @prod(i32, i32) {
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entry:
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%2 = mul i32 %0, %1
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ret i32 %2
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}
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define i32 @test_func(i32, i32, i32) {
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entry:
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%tmp1 = call i32 @prod(i32 %0, i32 %1)
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%tmp2 = add i32 %tmp1, %2
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%tmp3 = add i32 %tmp2, 1
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ret i32 %tmp3
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}
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"""
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class strstream(object):
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def __init__(self): pass
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def read(self): return test_module
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m = Module.from_assembly(strstream())
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print "-"*60
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print m
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print "-"*60
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print "Examining function `test_func':"
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return m.get_function_named("test_func")
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#===----------------------------------------------------------------------===
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func = make_function()
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idx = 1
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for inst in func.basic_blocks[0].instructions:
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print "Instruction #%d:" % (idx,)
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print " operand_count =", inst.operand_count
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print " operands:"
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oidx = 1
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for op in inst.operands:
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print " %d: %s" % (oidx, repr(op))
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oidx += 1
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idx += 1
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@ -162,9 +162,10 @@ def do_value():
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k = Constant.int(ti, 42)
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k.name = 'a'
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s = k.name
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t = s.type
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t = k.type
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s = str(k)
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s = k == Constant.int(ti, 43)
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i = k.value_id
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def do_constant():
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@ -473,6 +474,7 @@ def do_llvm_core():
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do_module()
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do_type()
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do_typehandle()
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do_value()
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do_constant()
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do_global_value()
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do_global_variable()
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@ -577,3 +579,20 @@ def main():
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main()
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# to add:
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# IntegerType
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# FunctionType
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# StructType
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# ArrayType
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# PointerType
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# VectorType
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# ConstantExpr
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# ConstantAggregateZero
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# ConstantInt
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# ConstantFP
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# ConstantArray
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# ConstantStruct
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# ConstantVector
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# ConstantPointerNull
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# MemoryBuffer
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