view python/testregalloc.py @ 279:2ccd57b1d78c

Fix register allocator to do burn2 OK
author Windel Bouwman
date Sat, 12 Oct 2013 09:56:23 +0200
parents
children 02385f62f250
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import unittest
import os
import sys
import irmach
import registerallocator
import ir


class RegAllocTestCase(unittest.TestCase):
    def setUp(self):
        self.ra = registerallocator.RegisterAllocator()

    def testRegAlloc(self):
        f = irmach.Frame('tst')
        f.regs = [1,2,3,4,5,6] # for test use numbers!
        f.tempMap = {}
        t1 = ir.Temp('t1')
        t2 = ir.Temp('t2')
        t3 = ir.Temp('t3')
        t4 = ir.Temp('t4')
        t5 = ir.Temp('t5')
        f.instructions.append(irmach.makeIns('ld %d0', dst=[t1]))
        f.instructions.append(irmach.makeIns('ld %d0', dst=[t2]))
        f.instructions.append(irmach.makeIns('ld %d0', dst=[t3]))
        f.instructions.append(irmach.makeIns('add %d0, %s0, %s1', dst=[t4], src=[t1, t2]))
        f.instructions.append(irmach.makeIns('add %d0, %s0, %s1', dst=[t5], src=[t4, t3]))
        f.instructions.append(irmach.makeIns('st %s0', src=[t5]))
        self.ra.allocFrame(f)
        self.conflict(t1, t2)
        self.conflict(t2, t3)

    def conflict(self, ta, tb):
        self.assertNotEqual(self.ra.Node(ta).color, self.ra.Node(tb).color)

    def testRegCoalesc(self):
        f = irmach.Frame('tst')
        f.regs = [1,2,3,4,5,6] # for test use numbers!
        f.tempMap = {}
        t1 = ir.Temp('t1')
        t2 = ir.Temp('t2')
        t3 = ir.Temp('t3')
        t4 = ir.Temp('t4')
        t5 = ir.Temp('t5')
        t6 = ir.Temp('t6')
        f.instructions.append(irmach.makeIns('ld %d0', dst=[t1]))
        f.instructions.append(irmach.makeIns('ld %d0', dst=[t2]))
        f.instructions.append(irmach.makeIns('ld %d0', dst=[t3]))
        f.instructions.append(irmach.makeIns('lsl %s0, %s1', dst=[t4], src=[t2, t1]))
        f.instructions.append(irmach.makeIns('mov %d0, %s0', dst=[t5], src=[t3]))
        f.instructions.append(irmach.makeIns('orr %s0, %s1', dst=[t5], src=[t4, t5]))
        f.instructions.append(irmach.makeIns('mov %d0, %s0', dst=[t6], src=[t5]))
        f.instructions.append(irmach.makeIns('st %s0', src=[t6]))
        self.ra.allocFrame(f)
        f.ig.to_txt()
        for i in f.instructions:
            print(i)
        self.conflict(t1, t2)
        self.conflict(t2, t3)
        self.conflict(t1, t3)

if __name__ == '__main__':
    unittest.main()