mirror of
https://gitlab.com/camelot/kickc.git
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Added test for optimizing comparisons to types outside range of type. Added a missing fragment (that won't be used when the optimization is implemented). #291
This commit is contained in:
jespergravgaard
parent
3aad07f4e1
commit
2739456cc3
1
src/main/fragment/vbuaa_ge_0_then_la1.asm
Normal file
1
src/main/fragment/vbuaa_ge_0_then_la1.asm
Normal file
@ -0,0 +1 @@
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jmp {la1}
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@ -36,6 +36,13 @@ public class TestPrograms {
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public TestPrograms() {
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}
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// TODO: Optimize comparisons with values outside the range of types https://gitlab.com/camelot/kickc/issues/291
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@Test
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public void testOptimizeUnsignedComparisons() throws IOException, URISyntaxException {
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compileAndCompare("optimize-unsigned-comparisons");
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}
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// TODO: Fix loop head problem! https://gitlab.com/camelot/kickc/issues/261
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@Test
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public void testLoopheadProblem() throws IOException, URISyntaxException {
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21
src/test/kc/optimize-unsigned-comparisons.kc
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21
src/test/kc/optimize-unsigned-comparisons.kc
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@ -0,0 +1,21 @@
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// Examples of unsigned comparisons to values outside the range of unsigned
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// These should be optimized to constants
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byte[8] ball_active = { 0, 1, 0, 1, 0, 1, 1, 1 };
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void main() {
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const byte* screen = 0x0400;
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byte temp;
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for( char i: 0..7) {
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// Always false
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if (ball_active[i]<0) {
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screen[i] = '-';
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}
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temp = ball_active[i];
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}
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// Always false
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if (temp<0) {
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screen[40] = temp;
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}
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}
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17
src/test/ref/optimize-unsigned-comparisons.asm
Normal file
17
src/test/ref/optimize-unsigned-comparisons.asm
Normal file
@ -0,0 +1,17 @@
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// Examples of unsigned comparisons to values outside the range of unsigned
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// These should be optimized to constants
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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main: {
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.label screen = $400
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ldx #0
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b1:
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lda ball_active,x
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lda ball_active,x
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inx
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cpx #8
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bne b1
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rts
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}
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ball_active: .byte 0, 1, 0, 1, 0, 1, 1, 1
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33
src/test/ref/optimize-unsigned-comparisons.cfg
Normal file
33
src/test/ref/optimize-unsigned-comparisons.cfg
Normal file
@ -0,0 +1,33 @@
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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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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::@2
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[5] (byte) main::i#2 ← phi( main/(byte) 0 main::@2/(byte) main::i#1 )
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[6] if(*((const byte[8]) ball_active#0 + (byte) main::i#2)>=(byte) 0) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@1
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[7] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '-'
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to:main::@2
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main::@2: scope:[main] from main::@1 main::@3
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[8] (byte) main::temp#1 ← *((const byte[8]) ball_active#0 + (byte) main::i#2)
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[9] (byte) main::i#1 ← ++ (byte) main::i#2
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[10] if((byte) main::i#1!=(byte) 8) goto main::@1
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to:main::@4
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main::@4: scope:[main] from main::@2
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[11] if((byte) main::temp#1>=(byte) 0) goto main::@return
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to:main::@5
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main::@5: scope:[main] from main::@4
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[12] *((const byte*) main::screen#0+(byte) $28) ← (byte) main::temp#1
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to:main::@return
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main::@return: scope:[main] from main::@4 main::@5
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[13] return
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to:@return
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525
src/test/ref/optimize-unsigned-comparisons.log
Normal file
525
src/test/ref/optimize-unsigned-comparisons.log
Normal file
@ -0,0 +1,525 @@
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Culled Empty Block (label) main::@1
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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(byte[8]) ball_active#0 ← { (number) 0, (number) 1, (number) 0, (number) 1, (number) 0, (number) 1, (number) 1, (number) 1 }
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to:@1
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main: scope:[main] from @1
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(byte*) main::screen#0 ← ((byte*)) (number) $400
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(byte) main::temp#0 ← (byte) 0
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(byte) main::i#0 ← (byte) 0
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to:main::@2
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main::@2: scope:[main] from main main::@3
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(byte) main::i#2 ← phi( main/(byte) main::i#0 main::@3/(byte) main::i#1 )
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(bool~) main::$2 ← *((byte[8]) ball_active#0 + (byte) main::i#2) < (number) 0
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(bool~) main::$3 ← ! (bool~) main::$2
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if((bool~) main::$3) goto main::@3
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to:main::@4
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main::@3: scope:[main] from main::@2 main::@4
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(byte) main::i#3 ← phi( main::@2/(byte) main::i#2 main::@4/(byte) main::i#4 )
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(byte) main::temp#1 ← *((byte[8]) ball_active#0 + (byte) main::i#3)
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(byte) main::i#1 ← (byte) main::i#3 + rangenext(0,7)
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(bool~) main::$4 ← (byte) main::i#1 != rangelast(0,7)
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if((bool~) main::$4) goto main::@2
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to:main::@5
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main::@4: scope:[main] from main::@2
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(byte) main::i#4 ← phi( main::@2/(byte) main::i#2 )
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*((byte*) main::screen#0 + (byte) main::i#4) ← (byte) '-'
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to:main::@3
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main::@5: scope:[main] from main::@3
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(byte) main::temp#2 ← phi( main::@3/(byte) main::temp#1 )
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(bool~) main::$0 ← (byte) main::temp#2 < (number) 0
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(bool~) main::$1 ← ! (bool~) main::$0
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if((bool~) main::$1) goto main::@return
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to:main::@6
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main::@6: scope:[main] from main::@5
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(byte) main::temp#3 ← phi( main::@5/(byte) main::temp#2 )
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*((byte*) main::screen#0 + (number) $28) ← (byte) main::temp#3
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to:main::@return
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main::@return: scope:[main] from main::@5 main::@6
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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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(byte[8]) ball_active
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(byte[8]) ball_active#0
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(void()) main()
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(bool~) main::$0
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(bool~) main::$1
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(bool~) main::$2
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(bool~) main::$3
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(bool~) main::$4
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(label) main::@2
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(label) main::@3
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(label) main::@4
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(label) main::@5
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(label) main::@6
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(label) main::@return
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(byte) main::i
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(byte) main::i#0
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(byte) main::i#1
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(byte) main::i#2
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(byte) main::i#3
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(byte) main::i#4
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(byte*) main::screen
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(byte*) main::screen#0
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(byte) main::temp
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(byte) main::temp#0
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(byte) main::temp#1
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(byte) main::temp#2
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(byte) main::temp#3
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Adding number conversion cast (unumber) 0 in (bool~) main::$2 ← *((byte[8]) ball_active#0 + (byte) main::i#2) < (number) 0
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Adding number conversion cast (unumber) 0 in (bool~) main::$0 ← (byte) main::temp#2 < (number) 0
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Adding number conversion cast (unumber) $28 in *((byte*) main::screen#0 + (number) $28) ← (byte) main::temp#3
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Successful SSA optimization PassNAddNumberTypeConversions
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Added casts to value list in (byte[8]) ball_active#0 ← (byte[8]){ (byte)(number) 0, (byte)(number) 1, (byte)(number) 0, (byte)(number) 1, (byte)(number) 0, (byte)(number) 1, (byte)(number) 1, (byte)(number) 1 }
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Successful SSA optimization PassNAddInitializerValueListTypeCasts
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Inlining cast (byte*) main::screen#0 ← (byte*)(number) $400
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Successful SSA optimization Pass2InlineCast
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Simplifying constant integer cast 0
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Simplifying constant integer cast 1
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Simplifying constant integer cast 0
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Simplifying constant integer cast 1
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Simplifying constant integer cast 0
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Simplifying constant integer cast 1
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Simplifying constant integer cast 1
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Simplifying constant integer cast 1
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Simplifying constant pointer cast (byte*) 1024
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Simplifying constant integer cast 0
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Simplifying constant integer cast 0
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Simplifying constant integer cast $28
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 0
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Finalized unsigned number type (byte) 0
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Finalized unsigned number type (byte) $28
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Inversing boolean not [6] (bool~) main::$3 ← *((byte[8]) ball_active#0 + (byte) main::i#2) >= (byte) 0 from [5] (bool~) main::$2 ← *((byte[8]) ball_active#0 + (byte) main::i#2) < (byte) 0
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Inversing boolean not [17] (bool~) main::$1 ← (byte) main::temp#2 >= (byte) 0 from [16] (bool~) main::$0 ← (byte) main::temp#2 < (byte) 0
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Successful SSA optimization Pass2UnaryNotSimplification
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Alias (byte) main::i#2 = (byte) main::i#4
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Alias (byte) main::temp#1 = (byte) main::temp#2 (byte) main::temp#3
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Successful SSA optimization Pass2AliasElimination
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Alias (byte) main::i#2 = (byte) main::i#3
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Successful SSA optimization Pass2AliasElimination
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Simple Condition (bool~) main::$3 [7] if(*((byte[8]) ball_active#0 + (byte) main::i#2)>=(byte) 0) goto main::@3
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Simple Condition (bool~) main::$4 [12] if((byte) main::i#1!=rangelast(0,7)) goto main::@2
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Simple Condition (bool~) main::$1 [18] if((byte) main::temp#1>=(byte) 0) goto main::@return
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Identified constant from value list (byte[8]) { (byte) 0, (byte) 1, (byte) 0, (byte) 1, (byte) 0, (byte) 1, (byte) 1, (byte) 1 }
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Successful SSA optimization Pass2ConstantInitializerValueLists
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Constant (const byte[8]) ball_active#0 = { 0, 1, 0, 1, 0, 1, 1, 1 }
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Constant (const byte*) main::screen#0 = (byte*) 1024
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Constant (const byte) main::temp#0 = 0
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Constant (const byte) main::i#0 = 0
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Successful SSA optimization Pass2ConstantIdentification
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Resolved ranged next value [10] main::i#1 ← ++ main::i#2 to ++
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Resolved ranged comparison value [12] if(main::i#1!=rangelast(0,7)) goto main::@2 to (number) 8
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Eliminating unused constant (const byte) main::temp#0
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Successful SSA optimization PassNEliminateUnusedVars
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Adding number conversion cast (unumber) 8 in if((byte) main::i#1!=(number) 8) goto main::@2
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant integer cast 8
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 8
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Inlining constant with var siblings (const byte) main::i#0
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Constant inlined main::i#0 = (byte) 0
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Successful SSA optimization Pass2ConstantInlining
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Consolidated array index constant in *(main::screen#0+$28)
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Successful SSA optimization Pass2ConstantAdditionElimination
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Added new block during phi lifting main::@7(between main::@3 and main::@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 @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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CALL GRAPH
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Calls in [] to main:2
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Created 1 initial phi equivalence classes
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Coalesced [15] main::i#5 ← main::i#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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Culled Empty Block (label) main::@7
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Renumbering block main::@2 to main::@1
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Renumbering block main::@3 to main::@2
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Renumbering block main::@4 to main::@3
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Renumbering block main::@5 to main::@4
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Renumbering block main::@6 to main::@5
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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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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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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::@2
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[5] (byte) main::i#2 ← phi( main/(byte) 0 main::@2/(byte) main::i#1 )
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[6] if(*((const byte[8]) ball_active#0 + (byte) main::i#2)>=(byte) 0) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@1
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[7] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '-'
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to:main::@2
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main::@2: scope:[main] from main::@1 main::@3
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[8] (byte) main::temp#1 ← *((const byte[8]) ball_active#0 + (byte) main::i#2)
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[9] (byte) main::i#1 ← ++ (byte) main::i#2
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[10] if((byte) main::i#1!=(byte) 8) goto main::@1
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to:main::@4
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main::@4: scope:[main] from main::@2
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[11] if((byte) main::temp#1>=(byte) 0) goto main::@return
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to:main::@5
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main::@5: scope:[main] from main::@4
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[12] *((const byte*) main::screen#0+(byte) $28) ← (byte) main::temp#1
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to:main::@return
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main::@return: scope:[main] from main::@4 main::@5
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[13] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(byte[8]) ball_active
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(void()) main()
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(byte) main::i
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(byte) main::i#1 16.5
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(byte) main::i#2 13.75
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(byte*) main::screen
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(byte) main::temp
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(byte) main::temp#1 3.75
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|
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Initial phi equivalence classes
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[ main::i#2 main::i#1 ]
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Added variable main::temp#1 to zero page equivalence class [ main::temp#1 ]
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Complete equivalence classes
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[ main::i#2 main::i#1 ]
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[ main::temp#1 ]
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Allocated zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
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Allocated zp ZP_BYTE:3 [ main::temp#1 ]
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INITIAL ASM
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Target platform is c64basic
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// File Comments
|
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// Examples of unsigned comparisons to values outside the range of unsigned
|
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// These should be optimized to constants
|
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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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// @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 screen = $400
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.label temp = 3
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.label i = 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::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
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lda #0
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sta.z i
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jmp b1
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// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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b1_from_b2:
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// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp b1
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// main::@1
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b1:
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// [6] if(*((const byte[8]) ball_active#0 + (byte) main::i#2)>=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuz1_ge_0_then_la1
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ldy.z i
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lda ball_active,y
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jmp b2
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jmp b3
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// main::@3
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b3:
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// [7] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '-' -- pbuc1_derefidx_vbuz1=vbuc2
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lda #'-'
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ldy.z i
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sta screen,y
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jmp b2
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// main::@2
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b2:
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// [8] (byte) main::temp#1 ← *((const byte[8]) ball_active#0 + (byte) main::i#2) -- vbuz1=pbuc1_derefidx_vbuz2
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ldy.z i
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lda ball_active,y
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sta.z temp
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// [9] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1
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inc.z i
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// [10] if((byte) main::i#1!=(byte) 8) goto main::@1 -- vbuz1_neq_vbuc1_then_la1
|
||||
lda #8
|
||||
cmp.z i
|
||||
bne b1_from_b2
|
||||
jmp b4
|
||||
// main::@4
|
||||
b4:
|
||||
// [11] if((byte) main::temp#1>=(byte) 0) goto main::@return -- vbuz1_ge_0_then_la1
|
||||
lda.z temp
|
||||
jmp breturn
|
||||
jmp b5
|
||||
// main::@5
|
||||
b5:
|
||||
// [12] *((const byte*) main::screen#0+(byte) $28) ← (byte) main::temp#1 -- _deref_pbuc1=vbuz1
|
||||
lda.z temp
|
||||
sta screen+$28
|
||||
jmp breturn
|
||||
// main::@return
|
||||
breturn:
|
||||
// [13] return
|
||||
rts
|
||||
}
|
||||
// File Data
|
||||
ball_active: .byte 0, 1, 0, 1, 0, 1, 1, 1
|
||||
|
||||
REGISTER UPLIFT POTENTIAL REGISTERS
|
||||
Statement [6] if(*((const byte[8]) ball_active#0 + (byte) main::i#2)>=(byte) 0) goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a
|
||||
Removing always clobbered register reg byte a as potential for zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
|
||||
Statement [7] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '-' [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a
|
||||
Statement [6] if(*((const byte[8]) ball_active#0 + (byte) main::i#2)>=(byte) 0) goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a
|
||||
Statement [7] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '-' [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a
|
||||
Potential registers zp ZP_BYTE:2 [ main::i#2 main::i#1 ] : zp ZP_BYTE:2 , reg byte x , reg byte y ,
|
||||
Potential registers zp ZP_BYTE:3 [ main::temp#1 ] : zp ZP_BYTE:3 , reg byte a , reg byte x , reg byte y ,
|
||||
|
||||
REGISTER UPLIFT SCOPES
|
||||
Uplift Scope [main] 30.25: zp ZP_BYTE:2 [ main::i#2 main::i#1 ] 3.75: zp ZP_BYTE:3 [ main::temp#1 ]
|
||||
Uplift Scope []
|
||||
|
||||
Uplifting [main] best 456 combination reg byte x [ main::i#2 main::i#1 ] reg byte a [ main::temp#1 ]
|
||||
Uplifting [] best 456 combination
|
||||
|
||||
ASSEMBLER BEFORE OPTIMIZATION
|
||||
// File Comments
|
||||
// Examples of unsigned comparisons to values outside the range of unsigned
|
||||
// These should be optimized to constants
|
||||
// Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(bbegin)
|
||||
.pc = $80d "Program"
|
||||
// Global Constants & labels
|
||||
// @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 screen = $400
|
||||
// [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
b1_from_main:
|
||||
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
|
||||
ldx #0
|
||||
jmp b1
|
||||
// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
|
||||
b1_from_b2:
|
||||
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy
|
||||
jmp b1
|
||||
// main::@1
|
||||
b1:
|
||||
// [6] if(*((const byte[8]) ball_active#0 + (byte) main::i#2)>=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_ge_0_then_la1
|
||||
lda ball_active,x
|
||||
jmp b2
|
||||
jmp b3
|
||||
// main::@3
|
||||
b3:
|
||||
// [7] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '-' -- pbuc1_derefidx_vbuxx=vbuc2
|
||||
lda #'-'
|
||||
sta screen,x
|
||||
jmp b2
|
||||
// main::@2
|
||||
b2:
|
||||
// [8] (byte) main::temp#1 ← *((const byte[8]) ball_active#0 + (byte) main::i#2) -- vbuaa=pbuc1_derefidx_vbuxx
|
||||
lda ball_active,x
|
||||
// [9] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
|
||||
inx
|
||||
// [10] if((byte) main::i#1!=(byte) 8) goto main::@1 -- vbuxx_neq_vbuc1_then_la1
|
||||
cpx #8
|
||||
bne b1_from_b2
|
||||
jmp b4
|
||||
// main::@4
|
||||
b4:
|
||||
// [11] if((byte) main::temp#1>=(byte) 0) goto main::@return -- vbuaa_ge_0_then_la1
|
||||
jmp breturn
|
||||
jmp b5
|
||||
// main::@5
|
||||
b5:
|
||||
// [12] *((const byte*) main::screen#0+(byte) $28) ← (byte) main::temp#1 -- _deref_pbuc1=vbuaa
|
||||
sta screen+$28
|
||||
jmp breturn
|
||||
// main::@return
|
||||
breturn:
|
||||
// [13] return
|
||||
rts
|
||||
}
|
||||
// File Data
|
||||
ball_active: .byte 0, 1, 0, 1, 0, 1, 1, 1
|
||||
|
||||
ASSEMBLER OPTIMIZATIONS
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp bend
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp b3
|
||||
Removing instruction jmp b2
|
||||
Removing instruction jmp b4
|
||||
Removing instruction jmp b5
|
||||
Removing instruction jmp breturn
|
||||
Succesful ASM optimization Pass5NextJumpElimination
|
||||
Replacing label b1_from_b2 with b1
|
||||
Removing instruction b1_from_bbegin:
|
||||
Removing instruction b1:
|
||||
Removing instruction main_from_b1:
|
||||
Removing instruction bend_from_b1:
|
||||
Removing instruction b1_from_b2:
|
||||
Succesful ASM optimization Pass5RedundantLabelElimination
|
||||
Removing instruction bend:
|
||||
Removing instruction b1_from_main:
|
||||
Removing instruction b3:
|
||||
Removing instruction b4:
|
||||
Removing instruction b5:
|
||||
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||
Updating BasicUpstart to call main directly
|
||||
Removing instruction jsr main
|
||||
Succesful ASM optimization Pass5SkipBegin
|
||||
Replacing jump to rts with rts in jmp breturn
|
||||
Succesful ASM optimization Pass5DoubleJumpElimination
|
||||
Removing unreachable instruction lda #'-'
|
||||
Removing unreachable instruction sta screen,x
|
||||
Removing unreachable instruction sta screen+$28
|
||||
Succesful ASM optimization Pass5UnreachableCodeElimination
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp b2
|
||||
Succesful ASM optimization Pass5NextJumpElimination
|
||||
Removing instruction bbegin:
|
||||
Removing instruction b2:
|
||||
Removing instruction breturn:
|
||||
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||
Removing unreachable instruction rts
|
||||
Succesful ASM optimization Pass5UnreachableCodeElimination
|
||||
|
||||
FINAL SYMBOL TABLE
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(byte[8]) ball_active
|
||||
(const byte[8]) ball_active#0 ball_active = { (byte) 0, (byte) 1, (byte) 0, (byte) 1, (byte) 0, (byte) 1, (byte) 1, (byte) 1 }
|
||||
(void()) main()
|
||||
(label) main::@1
|
||||
(label) main::@2
|
||||
(label) main::@3
|
||||
(label) main::@4
|
||||
(label) main::@5
|
||||
(label) main::@return
|
||||
(byte) main::i
|
||||
(byte) main::i#1 reg byte x 16.5
|
||||
(byte) main::i#2 reg byte x 13.75
|
||||
(byte*) main::screen
|
||||
(const byte*) main::screen#0 screen = (byte*) 1024
|
||||
(byte) main::temp
|
||||
(byte) main::temp#1 reg byte a 3.75
|
||||
|
||||
reg byte x [ main::i#2 main::i#1 ]
|
||||
reg byte a [ main::temp#1 ]
|
||||
|
||||
|
||||
FINAL ASSEMBLER
|
||||
Score: 181
|
||||
|
||||
// File Comments
|
||||
// Examples of unsigned comparisons to values outside the range of unsigned
|
||||
// These should be optimized to constants
|
||||
// Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
// Global Constants & labels
|
||||
// @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 screen = $400
|
||||
// [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
|
||||
ldx #0
|
||||
// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
|
||||
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy
|
||||
// main::@1
|
||||
b1:
|
||||
// if (ball_active[i]<0)
|
||||
// [6] if(*((const byte[8]) ball_active#0 + (byte) main::i#2)>=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_ge_0_then_la1
|
||||
lda ball_active,x
|
||||
// main::@3
|
||||
// screen[i] = '-'
|
||||
// [7] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '-' -- pbuc1_derefidx_vbuxx=vbuc2
|
||||
// main::@2
|
||||
// temp = ball_active[i]
|
||||
// [8] (byte) main::temp#1 ← *((const byte[8]) ball_active#0 + (byte) main::i#2) -- vbuaa=pbuc1_derefidx_vbuxx
|
||||
lda ball_active,x
|
||||
// for( char i: 0..7)
|
||||
// [9] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
|
||||
inx
|
||||
// [10] if((byte) main::i#1!=(byte) 8) goto main::@1 -- vbuxx_neq_vbuc1_then_la1
|
||||
cpx #8
|
||||
bne b1
|
||||
// main::@4
|
||||
// if (temp<0)
|
||||
// [11] if((byte) main::temp#1>=(byte) 0) goto main::@return -- vbuaa_ge_0_then_la1
|
||||
rts
|
||||
// main::@5
|
||||
// screen[40] = temp
|
||||
// [12] *((const byte*) main::screen#0+(byte) $28) ← (byte) main::temp#1 -- _deref_pbuc1=vbuaa
|
||||
// main::@return
|
||||
// }
|
||||
// [13] return
|
||||
}
|
||||
// File Data
|
||||
ball_active: .byte 0, 1, 0, 1, 0, 1, 1, 1
|
||||
|
||||
22
src/test/ref/optimize-unsigned-comparisons.sym
Normal file
22
src/test/ref/optimize-unsigned-comparisons.sym
Normal file
@ -0,0 +1,22 @@
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(byte[8]) ball_active
|
||||
(const byte[8]) ball_active#0 ball_active = { (byte) 0, (byte) 1, (byte) 0, (byte) 1, (byte) 0, (byte) 1, (byte) 1, (byte) 1 }
|
||||
(void()) main()
|
||||
(label) main::@1
|
||||
(label) main::@2
|
||||
(label) main::@3
|
||||
(label) main::@4
|
||||
(label) main::@5
|
||||
(label) main::@return
|
||||
(byte) main::i
|
||||
(byte) main::i#1 reg byte x 16.5
|
||||
(byte) main::i#2 reg byte x 13.75
|
||||
(byte*) main::screen
|
||||
(const byte*) main::screen#0 screen = (byte*) 1024
|
||||
(byte) main::temp
|
||||
(byte) main::temp#1 reg byte a 3.75
|
||||
|
||||
reg byte x [ main::i#2 main::i#1 ]
|
||||
reg byte a [ main::temp#1 ]
|
||||
Loading…
Reference in New Issue
Block a user