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Fixes optimization problem with post-increment/decrement of calculated pointers. Closes #428
This commit is contained in:
jespergravgaard
parent
eed25ff1cd
commit
013159c16d
@ -6,6 +6,8 @@ import dk.camelot64.kickc.model.symbols.ProgramScope;
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import dk.camelot64.kickc.model.types.SymbolType;
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import dk.camelot64.kickc.model.types.SymbolTypeInference;
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import java.util.Objects;
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/** A constant defined by a binary operator applied to two constants */
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public class ConstantBinary implements ConstantValue {
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@ -74,4 +76,18 @@ public class ConstantBinary implements ConstantValue {
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return toString(null);
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}
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@Override
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public boolean equals(Object o) {
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if(this == o) return true;
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if(o == null || getClass() != o.getClass()) return false;
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ConstantBinary that = (ConstantBinary) o;
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return left.equals(that.left) &&
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operator.equals(that.operator) &&
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right.equals(that.right);
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}
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@Override
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public int hashCode() {
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return Objects.hash(left, operator, right);
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}
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}
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@ -165,6 +165,11 @@ public class TestPrograms {
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compileAndCompare("examples/conio/nacht-screen.c");
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}
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@Test
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public void testPostIncrementProblem2() throws IOException, URISyntaxException {
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compileAndCompare("post-increment-problem-2.c");
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}
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@Test
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public void testPostIncrementProblem() throws IOException, URISyntaxException {
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compileAndCompare("post-increment-problem.c");
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14
src/test/kc/post-increment-problem-2.c
Normal file
14
src/test/kc/post-increment-problem-2.c
Normal file
@ -0,0 +1,14 @@
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const byte *screen=$0400;
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void main() {
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word offset=40*10;
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for (char x=0;x<254;x++)
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incscreen(offset);
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}
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void incscreen(word ptr) {
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--(*(screen+ptr));
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(*(screen+ptr+1))--;
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++(*(screen+ptr));
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(*(screen+ptr+1))++;
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}
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32
src/test/ref/post-increment-problem-2.asm
Normal file
32
src/test/ref/post-increment-problem-2.asm
Normal file
@ -0,0 +1,32 @@
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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.label screen = $400
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main: {
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.label offset = $28*$a
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ldx #0
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__b1:
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// for (char x=0;x<254;x++)
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cpx #$fe
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bcc __b2
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// }
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rts
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__b2:
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// incscreen(offset)
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jsr incscreen
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// for (char x=0;x<254;x++)
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inx
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jmp __b1
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}
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incscreen: {
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// --(*(screen+ptr));
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dec screen+main.offset
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// (*(screen+ptr+1))--;
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dec screen+main.offset+1
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// ++(*(screen+ptr));
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inc screen+main.offset
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// (*(screen+ptr+1))++;
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inc screen+main.offset+1
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// }
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rts
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}
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39
src/test/ref/post-increment-problem-2.cfg
Normal file
39
src/test/ref/post-increment-problem-2.cfg
Normal file
@ -0,0 +1,39 @@
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@begin: scope:[] from
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[0] phi()
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to:@1
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@1: scope:[] from @begin
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[1] phi()
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[2] call main
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to:@end
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@end: scope:[] from @1
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[3] phi()
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(void()) main()
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main: scope:[main] from @1
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[4] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@3
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[5] (byte) main::x#2 ← phi( main/(byte) 0 main::@3/(byte) main::x#1 )
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[6] if((byte) main::x#2<(byte) $fe) goto main::@2
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to:main::@return
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main::@return: scope:[main] from main::@1
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[7] return
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to:@return
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main::@2: scope:[main] from main::@1
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[8] phi()
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[9] call incscreen
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to:main::@3
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main::@3: scope:[main] from main::@2
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[10] (byte) main::x#1 ← ++ (byte) main::x#2
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to:main::@1
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(void()) incscreen((word) incscreen::ptr)
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incscreen: scope:[incscreen] from main::@2
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[11] *((const to_nomodify byte*) screen+(const word) main::offset) ← -- *((const to_nomodify byte*) screen+(const word) main::offset)
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[12] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← -- *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1)
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[13] *((const to_nomodify byte*) screen+(const word) main::offset) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset)
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[14] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1)
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to:incscreen::@return
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incscreen::@return: scope:[incscreen] from incscreen
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[15] return
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to:@return
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499
src/test/ref/post-increment-problem-2.log
Normal file
499
src/test/ref/post-increment-problem-2.log
Normal file
@ -0,0 +1,499 @@
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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to:@1
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(void()) main()
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main: scope:[main] from @1
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(byte) main::x#0 ← (byte) 0
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to:main::@1
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main::@1: scope:[main] from main main::@3
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(byte) main::x#2 ← phi( main/(byte) main::x#0 main::@3/(byte) main::x#1 )
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(bool~) main::$0 ← (byte) main::x#2 < (number) $fe
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if((bool~) main::$0) goto main::@2
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to:main::@return
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main::@2: scope:[main] from main::@1
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(byte) main::x#4 ← phi( main::@1/(byte) main::x#2 )
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(word) incscreen::ptr#0 ← (const word) main::offset
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call incscreen
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to:main::@3
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main::@3: scope:[main] from main::@2
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(byte) main::x#3 ← phi( main::@2/(byte) main::x#4 )
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(byte) main::x#1 ← ++ (byte) main::x#3
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to:main::@1
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main::@return: scope:[main] from main::@1
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return
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to:@return
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(void()) incscreen((word) incscreen::ptr)
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incscreen: scope:[incscreen] from main::@2
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(word) incscreen::ptr#1 ← phi( main::@2/(word) incscreen::ptr#0 )
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(byte*~) incscreen::$0 ← (const to_nomodify byte*) screen + (word) incscreen::ptr#1
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*((byte*~) incscreen::$0) ← -- *((byte*~) incscreen::$0)
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(byte*~) incscreen::$9 ← (const to_nomodify byte*) screen + (word) incscreen::ptr#1
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(byte*~) incscreen::$10 ← (byte*~) incscreen::$9 + (number) 1
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*((byte*~) incscreen::$10) ← -- *((byte*~) incscreen::$10)
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(byte*~) incscreen::$11 ← (const to_nomodify byte*) screen + (word) incscreen::ptr#1
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*((byte*~) incscreen::$11) ← ++ *((byte*~) incscreen::$11)
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(byte*~) incscreen::$20 ← (const to_nomodify byte*) screen + (word) incscreen::ptr#1
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(byte*~) incscreen::$21 ← (byte*~) incscreen::$20 + (number) 1
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*((byte*~) incscreen::$21) ← ++ *((byte*~) incscreen::$21)
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to:incscreen::@return
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incscreen::@return: scope:[incscreen] from incscreen
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return
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to:@return
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@1: scope:[] from @begin
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call main
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to:@2
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@2: scope:[] from @1
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to:@end
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@end: scope:[] from @2
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SYMBOL TABLE SSA
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(label) @1
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(label) @2
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(label) @begin
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(label) @end
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(void()) incscreen((word) incscreen::ptr)
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(byte*~) incscreen::$0
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(byte*~) incscreen::$10
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(byte*~) incscreen::$11
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(byte*~) incscreen::$20
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(byte*~) incscreen::$21
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(byte*~) incscreen::$9
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(label) incscreen::@return
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(word) incscreen::ptr
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(word) incscreen::ptr#0
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(word) incscreen::ptr#1
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(void()) main()
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(bool~) main::$0
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(label) main::@1
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(label) main::@2
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(label) main::@3
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(label) main::@return
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(const word) main::offset = (word)(number) $28*(number) $a
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(byte) main::x
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(byte) main::x#0
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(byte) main::x#1
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(byte) main::x#2
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(byte) main::x#3
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(byte) main::x#4
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(const to_nomodify byte*) screen = (byte*)(number) $400
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Adding number conversion cast (unumber) $fe in (bool~) main::$0 ← (byte) main::x#2 < (number) $fe
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Adding number conversion cast (unumber) 1 in (byte*~) incscreen::$10 ← (byte*~) incscreen::$9 + (number) 1
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Adding number conversion cast (unumber) 1 in (byte*~) incscreen::$21 ← (byte*~) incscreen::$20 + (number) 1
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant pointer cast (byte*) 1024
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Simplifying constant integer cast $fe
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Simplifying constant integer cast 1
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Simplifying constant integer cast 1
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) $fe
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Finalized unsigned number type (byte) 1
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Finalized unsigned number type (byte) 1
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias main::x#2 = main::x#4 main::x#3
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Successful SSA optimization Pass2AliasElimination
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Identical Phi Values (word) incscreen::ptr#1 (word) incscreen::ptr#0
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Successful SSA optimization Pass2IdenticalPhiElimination
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Simple Condition (bool~) main::$0 [3] if((byte) main::x#2<(byte) $fe) goto main::@2
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const byte) main::x#0 = 0
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Constant (const word) incscreen::ptr#0 = main::offset
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Successful SSA optimization Pass2ConstantIdentification
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Converting *(pointer+n) to pointer[n] [13] *((byte*~) incscreen::$10) ← -- *((byte*~) incscreen::$10) -- *(incscreen::$9 + 1)
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Converting *(pointer+n) to pointer[n] [13] *((byte*~) incscreen::$10) ← -- *((byte*~) incscreen::$9 + (byte) 1) -- *(incscreen::$9 + 1)
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Converting *(pointer+n) to pointer[n] [18] *((byte*~) incscreen::$21) ← ++ *((byte*~) incscreen::$21) -- *(incscreen::$20 + 1)
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Converting *(pointer+n) to pointer[n] [18] *((byte*~) incscreen::$21) ← ++ *((byte*~) incscreen::$20 + (byte) 1) -- *(incscreen::$20 + 1)
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Successful SSA optimization Pass2InlineDerefIdx
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Eliminating unused variable (byte*~) incscreen::$10 and assignment [8] (byte*~) incscreen::$10 ← (byte*~) incscreen::$9 + (byte) 1
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Eliminating unused variable (byte*~) incscreen::$21 and assignment [13] (byte*~) incscreen::$21 ← (byte*~) incscreen::$20 + (byte) 1
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Successful SSA optimization PassNEliminateUnusedVars
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Constant right-side identified [5] (byte*~) incscreen::$0 ← (const to_nomodify byte*) screen + (const word) incscreen::ptr#0
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Constant right-side identified [7] (byte*~) incscreen::$9 ← (const to_nomodify byte*) screen + (const word) incscreen::ptr#0
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Constant right-side identified [9] (byte*~) incscreen::$11 ← (const to_nomodify byte*) screen + (const word) incscreen::ptr#0
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Constant right-side identified [11] (byte*~) incscreen::$20 ← (const to_nomodify byte*) screen + (const word) incscreen::ptr#0
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Successful SSA optimization Pass2ConstantRValueConsolidation
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Constant (const byte*) incscreen::$0 = screen+incscreen::ptr#0
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Constant (const byte*) incscreen::$9 = screen+incscreen::ptr#0
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Constant (const byte*) incscreen::$11 = screen+incscreen::ptr#0
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Constant (const byte*) incscreen::$20 = screen+incscreen::ptr#0
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Successful SSA optimization Pass2ConstantIdentification
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Inlining constant with var siblings (const byte) main::x#0
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Constant inlined incscreen::$0 = (const to_nomodify byte*) screen+(const word) main::offset
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Constant inlined incscreen::$9 = (const to_nomodify byte*) screen+(const word) main::offset
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Constant inlined incscreen::$20 = (const to_nomodify byte*) screen+(const word) main::offset
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Constant inlined main::x#0 = (byte) 0
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Constant inlined incscreen::$11 = (const to_nomodify byte*) screen+(const word) main::offset
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Constant inlined incscreen::ptr#0 = (const word) main::offset
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Successful SSA optimization Pass2ConstantInlining
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Consolidated array index constant in *(screen+main::offset+1)
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Consolidated array index constant in *(screen+main::offset+1)
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Consolidated array index constant in *(screen+main::offset+1)
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Consolidated array index constant in *(screen+main::offset+1)
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Successful SSA optimization Pass2ConstantAdditionElimination
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @2
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Adding NOP phi() at start of @end
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Adding NOP phi() at start of main
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Adding NOP phi() at start of main::@2
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CALL GRAPH
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Calls in [] to main:2
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Calls in [main] to incscreen:10
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Created 1 initial phi equivalence classes
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Coalesced [12] main::x#5 ← main::x#1
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Coalesced down to 1 phi equivalence classes
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Culled Empty Block (label) @2
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @end
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Adding NOP phi() at start of main
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Adding NOP phi() at start of main::@2
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FINAL CONTROL FLOW GRAPH
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@begin: scope:[] from
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[0] phi()
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to:@1
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@1: scope:[] from @begin
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[1] phi()
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[2] call main
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to:@end
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@end: scope:[] from @1
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[3] phi()
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(void()) main()
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main: scope:[main] from @1
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[4] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@3
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[5] (byte) main::x#2 ← phi( main/(byte) 0 main::@3/(byte) main::x#1 )
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[6] if((byte) main::x#2<(byte) $fe) goto main::@2
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to:main::@return
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main::@return: scope:[main] from main::@1
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[7] return
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to:@return
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main::@2: scope:[main] from main::@1
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[8] phi()
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[9] call incscreen
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to:main::@3
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main::@3: scope:[main] from main::@2
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[10] (byte) main::x#1 ← ++ (byte) main::x#2
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to:main::@1
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(void()) incscreen((word) incscreen::ptr)
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incscreen: scope:[incscreen] from main::@2
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[11] *((const to_nomodify byte*) screen+(const word) main::offset) ← -- *((const to_nomodify byte*) screen+(const word) main::offset)
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[12] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← -- *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1)
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[13] *((const to_nomodify byte*) screen+(const word) main::offset) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset)
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[14] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1)
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to:incscreen::@return
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incscreen::@return: scope:[incscreen] from incscreen
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[15] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(void()) incscreen((word) incscreen::ptr)
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(word) incscreen::ptr
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(void()) main()
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(byte) main::x
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(byte) main::x#1 202.0
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(byte) main::x#2 75.75
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Initial phi equivalence classes
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[ main::x#2 main::x#1 ]
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Complete equivalence classes
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[ main::x#2 main::x#1 ]
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Allocated zp[1]:2 [ main::x#2 main::x#1 ]
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INITIAL ASM
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Target platform is c64basic / MOS6502X
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// File Comments
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(__bbegin)
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.pc = $80d "Program"
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// Global Constants & labels
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.label screen = $400
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// @begin
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__bbegin:
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// [1] phi from @begin to @1 [phi:@begin->@1]
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__b1_from___bbegin:
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jmp __b1
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// @1
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__b1:
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// [2] call main
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// [4] phi from @1 to main [phi:@1->main]
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main_from___b1:
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jsr main
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// [3] phi from @1 to @end [phi:@1->@end]
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__bend_from___b1:
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jmp __bend
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// @end
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__bend:
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// main
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main: {
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.label offset = $28*$a
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.label x = 2
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// [5] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [5] phi (byte) main::x#2 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
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lda #0
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sta.z x
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jmp __b1
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// main::@1
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__b1:
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// [6] if((byte) main::x#2<(byte) $fe) goto main::@2 -- vbuz1_lt_vbuc1_then_la1
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lda.z x
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cmp #$fe
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bcc __b2_from___b1
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jmp __breturn
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// main::@return
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__breturn:
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// [7] return
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rts
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// [8] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
|
||||
__b2_from___b1:
|
||||
jmp __b2
|
||||
// main::@2
|
||||
__b2:
|
||||
// [9] call incscreen
|
||||
jsr incscreen
|
||||
jmp __b3
|
||||
// main::@3
|
||||
__b3:
|
||||
// [10] (byte) main::x#1 ← ++ (byte) main::x#2 -- vbuz1=_inc_vbuz1
|
||||
inc.z x
|
||||
// [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
|
||||
__b1_from___b3:
|
||||
// [5] phi (byte) main::x#2 = (byte) main::x#1 [phi:main::@3->main::@1#0] -- register_copy
|
||||
jmp __b1
|
||||
}
|
||||
// incscreen
|
||||
incscreen: {
|
||||
// [11] *((const to_nomodify byte*) screen+(const word) main::offset) ← -- *((const to_nomodify byte*) screen+(const word) main::offset) -- _deref_pbuc1=_dec__deref_pbuc1
|
||||
dec screen+main.offset
|
||||
// [12] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← -- *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) -- _deref_pbuc1=_dec__deref_pbuc1
|
||||
dec screen+main.offset+1
|
||||
// [13] *((const to_nomodify byte*) screen+(const word) main::offset) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset) -- _deref_pbuc1=_inc__deref_pbuc1
|
||||
inc screen+main.offset
|
||||
// [14] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) -- _deref_pbuc1=_inc__deref_pbuc1
|
||||
inc screen+main.offset+1
|
||||
jmp __breturn
|
||||
// incscreen::@return
|
||||
__breturn:
|
||||
// [15] return
|
||||
rts
|
||||
}
|
||||
// File Data
|
||||
|
||||
REGISTER UPLIFT POTENTIAL REGISTERS
|
||||
Potential registers zp[1]:2 [ main::x#2 main::x#1 ] : zp[1]:2 , reg byte a , reg byte x , reg byte y ,
|
||||
|
||||
REGISTER UPLIFT SCOPES
|
||||
Uplift Scope [main] 277.75: zp[1]:2 [ main::x#2 main::x#1 ]
|
||||
Uplift Scope [incscreen]
|
||||
Uplift Scope []
|
||||
|
||||
Uplifting [main] best 346 combination reg byte x [ main::x#2 main::x#1 ]
|
||||
Uplifting [incscreen] best 346 combination
|
||||
Uplifting [] best 346 combination
|
||||
|
||||
ASSEMBLER BEFORE OPTIMIZATION
|
||||
// File Comments
|
||||
// Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(__bbegin)
|
||||
.pc = $80d "Program"
|
||||
// Global Constants & labels
|
||||
.label screen = $400
|
||||
// @begin
|
||||
__bbegin:
|
||||
// [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
__b1_from___bbegin:
|
||||
jmp __b1
|
||||
// @1
|
||||
__b1:
|
||||
// [2] call main
|
||||
// [4] phi from @1 to main [phi:@1->main]
|
||||
main_from___b1:
|
||||
jsr main
|
||||
// [3] phi from @1 to @end [phi:@1->@end]
|
||||
__bend_from___b1:
|
||||
jmp __bend
|
||||
// @end
|
||||
__bend:
|
||||
// main
|
||||
main: {
|
||||
.label offset = $28*$a
|
||||
// [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
__b1_from_main:
|
||||
// [5] phi (byte) main::x#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
|
||||
ldx #0
|
||||
jmp __b1
|
||||
// main::@1
|
||||
__b1:
|
||||
// [6] if((byte) main::x#2<(byte) $fe) goto main::@2 -- vbuxx_lt_vbuc1_then_la1
|
||||
cpx #$fe
|
||||
bcc __b2_from___b1
|
||||
jmp __breturn
|
||||
// main::@return
|
||||
__breturn:
|
||||
// [7] return
|
||||
rts
|
||||
// [8] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
|
||||
__b2_from___b1:
|
||||
jmp __b2
|
||||
// main::@2
|
||||
__b2:
|
||||
// [9] call incscreen
|
||||
jsr incscreen
|
||||
jmp __b3
|
||||
// main::@3
|
||||
__b3:
|
||||
// [10] (byte) main::x#1 ← ++ (byte) main::x#2 -- vbuxx=_inc_vbuxx
|
||||
inx
|
||||
// [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
|
||||
__b1_from___b3:
|
||||
// [5] phi (byte) main::x#2 = (byte) main::x#1 [phi:main::@3->main::@1#0] -- register_copy
|
||||
jmp __b1
|
||||
}
|
||||
// incscreen
|
||||
incscreen: {
|
||||
// [11] *((const to_nomodify byte*) screen+(const word) main::offset) ← -- *((const to_nomodify byte*) screen+(const word) main::offset) -- _deref_pbuc1=_dec__deref_pbuc1
|
||||
dec screen+main.offset
|
||||
// [12] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← -- *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) -- _deref_pbuc1=_dec__deref_pbuc1
|
||||
dec screen+main.offset+1
|
||||
// [13] *((const to_nomodify byte*) screen+(const word) main::offset) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset) -- _deref_pbuc1=_inc__deref_pbuc1
|
||||
inc screen+main.offset
|
||||
// [14] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) -- _deref_pbuc1=_inc__deref_pbuc1
|
||||
inc screen+main.offset+1
|
||||
jmp __breturn
|
||||
// incscreen::@return
|
||||
__breturn:
|
||||
// [15] return
|
||||
rts
|
||||
}
|
||||
// File Data
|
||||
|
||||
ASSEMBLER OPTIMIZATIONS
|
||||
Removing instruction jmp __b1
|
||||
Removing instruction jmp __bend
|
||||
Removing instruction jmp __b1
|
||||
Removing instruction jmp __breturn
|
||||
Removing instruction jmp __b2
|
||||
Removing instruction jmp __b3
|
||||
Removing instruction jmp __breturn
|
||||
Succesful ASM optimization Pass5NextJumpElimination
|
||||
Replacing label __b2_from___b1 with __b2
|
||||
Removing instruction __b1_from___bbegin:
|
||||
Removing instruction __b1:
|
||||
Removing instruction main_from___b1:
|
||||
Removing instruction __bend_from___b1:
|
||||
Removing instruction __b2_from___b1:
|
||||
Succesful ASM optimization Pass5RedundantLabelElimination
|
||||
Removing instruction __bend:
|
||||
Removing instruction __b1_from_main:
|
||||
Removing instruction __breturn:
|
||||
Removing instruction __b3:
|
||||
Removing instruction __b1_from___b3:
|
||||
Removing instruction __breturn:
|
||||
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||
Updating BasicUpstart to call main directly
|
||||
Removing instruction jsr main
|
||||
Succesful ASM optimization Pass5SkipBegin
|
||||
Removing instruction __bbegin:
|
||||
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||
|
||||
FINAL SYMBOL TABLE
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(void()) incscreen((word) incscreen::ptr)
|
||||
(label) incscreen::@return
|
||||
(word) incscreen::ptr
|
||||
(void()) main()
|
||||
(label) main::@1
|
||||
(label) main::@2
|
||||
(label) main::@3
|
||||
(label) main::@return
|
||||
(const word) main::offset = (word)(number) $28*(number) $a
|
||||
(byte) main::x
|
||||
(byte) main::x#1 reg byte x 202.0
|
||||
(byte) main::x#2 reg byte x 75.75
|
||||
(const to_nomodify byte*) screen = (byte*) 1024
|
||||
|
||||
reg byte x [ main::x#2 main::x#1 ]
|
||||
|
||||
|
||||
FINAL ASSEMBLER
|
||||
Score: 211
|
||||
|
||||
// File Comments
|
||||
// Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
// Global Constants & labels
|
||||
.label screen = $400
|
||||
// @begin
|
||||
// [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
// @1
|
||||
// [2] call main
|
||||
// [4] phi from @1 to main [phi:@1->main]
|
||||
// [3] phi from @1 to @end [phi:@1->@end]
|
||||
// @end
|
||||
// main
|
||||
main: {
|
||||
.label offset = $28*$a
|
||||
// [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
// [5] phi (byte) main::x#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
|
||||
ldx #0
|
||||
// main::@1
|
||||
__b1:
|
||||
// for (char x=0;x<254;x++)
|
||||
// [6] if((byte) main::x#2<(byte) $fe) goto main::@2 -- vbuxx_lt_vbuc1_then_la1
|
||||
cpx #$fe
|
||||
bcc __b2
|
||||
// main::@return
|
||||
// }
|
||||
// [7] return
|
||||
rts
|
||||
// [8] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
|
||||
// main::@2
|
||||
__b2:
|
||||
// incscreen(offset)
|
||||
// [9] call incscreen
|
||||
jsr incscreen
|
||||
// main::@3
|
||||
// for (char x=0;x<254;x++)
|
||||
// [10] (byte) main::x#1 ← ++ (byte) main::x#2 -- vbuxx=_inc_vbuxx
|
||||
inx
|
||||
// [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
|
||||
// [5] phi (byte) main::x#2 = (byte) main::x#1 [phi:main::@3->main::@1#0] -- register_copy
|
||||
jmp __b1
|
||||
}
|
||||
// incscreen
|
||||
incscreen: {
|
||||
// --(*(screen+ptr));
|
||||
// [11] *((const to_nomodify byte*) screen+(const word) main::offset) ← -- *((const to_nomodify byte*) screen+(const word) main::offset) -- _deref_pbuc1=_dec__deref_pbuc1
|
||||
dec screen+main.offset
|
||||
// (*(screen+ptr+1))--;
|
||||
// [12] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← -- *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) -- _deref_pbuc1=_dec__deref_pbuc1
|
||||
dec screen+main.offset+1
|
||||
// ++(*(screen+ptr));
|
||||
// [13] *((const to_nomodify byte*) screen+(const word) main::offset) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset) -- _deref_pbuc1=_inc__deref_pbuc1
|
||||
inc screen+main.offset
|
||||
// (*(screen+ptr+1))++;
|
||||
// [14] *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) ← ++ *((const to_nomodify byte*) screen+(const word) main::offset+(byte) 1) -- _deref_pbuc1=_inc__deref_pbuc1
|
||||
inc screen+main.offset+1
|
||||
// incscreen::@return
|
||||
// }
|
||||
// [15] return
|
||||
rts
|
||||
}
|
||||
// File Data
|
||||
|
||||
18
src/test/ref/post-increment-problem-2.sym
Normal file
18
src/test/ref/post-increment-problem-2.sym
Normal file
@ -0,0 +1,18 @@
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(void()) incscreen((word) incscreen::ptr)
|
||||
(label) incscreen::@return
|
||||
(word) incscreen::ptr
|
||||
(void()) main()
|
||||
(label) main::@1
|
||||
(label) main::@2
|
||||
(label) main::@3
|
||||
(label) main::@return
|
||||
(const word) main::offset = (word)(number) $28*(number) $a
|
||||
(byte) main::x
|
||||
(byte) main::x#1 reg byte x 202.0
|
||||
(byte) main::x#2 reg byte x 75.75
|
||||
(const to_nomodify byte*) screen = (byte*) 1024
|
||||
|
||||
reg byte x [ main::x#2 main::x#1 ]
|
||||
Loading…
Reference in New Issue
Block a user