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August 4th - happy happy happy

 
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JarrettBillingsley



Joined: 20 Jun 2006
Posts: 457
Location: Pennsylvania!
PostPosted: Fri Aug 04, 2006 7:39 pm    Post subject: August 4th - happy happy happy Reply with quote
I ran this through the compiler:

Code:
local a, b, c;

if(a < 10 || b < 10 || c < 10)
   print("hi");
else
   print("bye");


and got:

Code:
Function at simple.md(1:1)
        Local a(at simple.md(1:7), reg 0)
        Local b(at simple.md(1:10), reg 1)
        Local c(at simple.md(1:13), reg 2)
        Const 0: 10
        Const 1: "print"
        Const 2: "hi"
        Const 3: "bye"
        [0] cmp r0, c0
        [1] jlt 5
        [2] cmp r1, c0
        [3] jlt 3
        [4] cmp r2, c0
        [5] jge 5
        [6] getg r3, c1
        [7] lc r4, c2
        [8] call r3, 2, 0
        [9] jmp 4
        [10] getg r3, c1
        [11] lc r4, c3
        [12] call r3, 2, 0
        [13] ret r0, 1


joy joy joy joy joy! It works!

It's not done, but I am so happy it works.
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JarrettBillingsley



Joined: 20 Jun 2006
Posts: 457
Location: Pennsylvania!
PostPosted: Fri Aug 04, 2006 9:45 pm    Post subject: Reply with quote
Tweaked the codegen some more. Realized that jump offsets should be -1 since the PC is incremented right after the instruction fetch. Also, the register allocation / expression stack are working better than I expected - I only ran into a few small problems so far. I'll be working on getting more ambitious code to compile tomorrow.
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