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Added test demonstrating problem with using $ff as temporary zp in fragments.

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This commit is contained in:
jespergravgaard 2021-10-21 00:24:59 +02:00
parent c3a1f12771
commit 29a4c0feda
13 changed files with 847 additions and 6 deletions
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2
src/main/fragment/cache/fragment-cache-csg65ce02.asm vendored
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@ -1,4 +1,4 @@
//KICKC FRAGMENT CACHE df9b88c62 df9b8b138
//KICKC FRAGMENT CACHE e65dd24b5 e65dd4993
//FRAGMENT vbuzz=vbuc1
ldz #{c1}
//FRAGMENT vbuzz_lt_vbuc1_then_la1

2
src/main/fragment/cache/fragment-cache-mega45gs02.asm vendored
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@ -1,4 +1,4 @@
//KICKC FRAGMENT CACHE df9b88c62 df9b8b138
//KICKC FRAGMENT CACHE e65dd24b5 e65dd4993
//FRAGMENT vbuz1=vbuc1
ldz #{c1}
stz {z1}

2
src/main/fragment/cache/fragment-cache-mos6502.asm vendored
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@ -1,4 +1,4 @@
//KICKC FRAGMENT CACHE df9b88c62 df9b8b138
//KICKC FRAGMENT CACHE e65dd24b5 e65dd4993
//FRAGMENT vbuz1=vbuc1
lda #{c1}
sta {z1}

12
src/main/fragment/cache/fragment-cache-mos6502x.asm vendored
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@ -1,4 +1,4 @@
//KICKC FRAGMENT CACHE df9b88c62 df9b8b138
//KICKC FRAGMENT CACHE e65dd24b5 e65dd4993
//FRAGMENT vbuz1=vbuc1
lda #{c1}
sta {z1}
@ -8935,6 +8935,16 @@ bcc {la1}
lda {c1}
cmp #{c2}
bcs {la1}
//FRAGMENT _deref_pbum1=_inc__deref_pbum1
ldy {m1}
sty $fe
ldy {m1}+1
sty $ff
ldy #0
lda ($fe),y
clc
adc #1
sta ($fe),y
//FRAGMENT pwuz1=pwuc1
lda #<{c1}
sta {z1}

2
src/main/fragment/cache/fragment-cache-rom6502x.asm vendored
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@ -1,4 +1,4 @@
//KICKC FRAGMENT CACHE df9b88c62 df9b8b138
//KICKC FRAGMENT CACHE e65dd24b5 e65dd4993
//FRAGMENT _deref_pbuc1=_inc__deref_pbuc1
inc {c1}
//FRAGMENT isr_hardware_all_entry

2
src/main/fragment/cache/fragment-cache-wdc65c02.asm vendored
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@ -1,4 +1,4 @@
//KICKC FRAGMENT CACHE df9b88c62 df9b8b138
//KICKC FRAGMENT CACHE e65dd24b5 e65dd4993
//FRAGMENT vbuz1=_deref_pbuc1
lda {c1}
sta {z1}

9
src/main/fragment/mos6502-common/_deref_pbum1=_inc__deref_pbum1.asm Normal file
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@ -0,0 +1,9 @@
ldy {m1}
sty $fe
ldy {m1}+1
sty $ff
ldy #0
lda ($fe),y
clc
adc #1
sta ($fe),y

5
src/test/java/dk/camelot64/kickc/test/TestProgramsFast.java
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@ -9,6 +9,11 @@ import java.io.IOException;
*/
public class TestProgramsFast extends TestPrograms {
@Test
public void testTmpZpProblem() throws IOException {
compileAndCompare("tmp-zp-problem.c", log());
}
@Test
public void testConstBoolReturnProblem() throws IOException {
compileAndCompare("const-bool-return-problem.c");

30
src/test/kc/tmp-zp-problem.c Normal file
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@ -0,0 +1,30 @@
// Demonstrates a problem where temporary zp-variables are overwrites each other between different "threads"
#include <c64.h>
#include <6502.h>
// Setup the IRQ routine
void main() {
SEI();
*KERNEL_IRQ = &irq;
CLI();
for(;;) {
for(char i=0;i<10;i++)
for(char j=0;j<10;j++) {
char k = i+j;
if(k>0x80) {
VICII->BORDER_COLOR++;
}
}
}
}
__mem char * volatile ptr = (char*)0xff00;
// The Interrupt Handler
__interrupt(rom_sys_c64) void irq() {
*BG_COLOR = WHITE;
(*ptr)++;
*BG_COLOR = BLACK;
}

92
src/test/ref/tmp-zp-problem.asm Normal file
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@ -0,0 +1,92 @@
// Demonstrates a problem where temporary zp-variables are overwrites each other between different "threads"
/// @file
/// Commodore 64 Registers and Constants
/// @file
/// The MOS 6526 Complex Interface Adapter (CIA)
///
/// http://archive.6502.org/datasheets/mos_6526_cia_recreated.pdf
// Commodore 64 PRG executable file
.file [name="tmp-zp-problem.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
/// The colors of the C64
.const BLACK = 0
.const WHITE = 1
.const OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
/// $D021 Background Color 0
.label BG_COLOR = $d021
/// The VIC-II MOS 6567/6569
.label VICII = $d000
/// The vector used when the KERNAL serves IRQ interrupts
.label KERNEL_IRQ = $314
.segment Code
// The Interrupt Handler
irq: {
// *BG_COLOR = WHITE
lda #WHITE
sta BG_COLOR
// (*ptr)++;
ldy ptr
sty.z $fe
ldy ptr+1
sty.z $ff
ldy #0
lda ($fe),y
clc
adc #1
sta ($fe),y
// *BG_COLOR = BLACK
lda #BLACK
sta BG_COLOR
// }
jmp $ea31
}
// Setup the IRQ routine
main: {
// asm
sei
// *KERNEL_IRQ = &irq
lda #<irq
sta KERNEL_IRQ
lda #>irq
sta KERNEL_IRQ+1
// asm
cli
__b4:
ldx #0
__b1:
// for(char i=0;i<10;i++)
cpx #$a
bcc __b6
jmp __b4
__b6:
ldy #0
__b2:
// for(char j=0;j<10;j++)
cpy #$a
bcc __b3
// for(char i=0;i<10;i++)
inx
jmp __b1
__b3:
// char k = i+j
txa
sty.z $ff
clc
adc.z $ff
// if(k>0x80)
cmp #$80+1
bcc __b5
// VICII->BORDER_COLOR++;
inc VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
__b5:
// for(char j=0;j<10;j++)
iny
jmp __b2
}
.segment Data
ptr: .word $ff00

45
src/test/ref/tmp-zp-problem.cfg Normal file
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@ -0,0 +1,45 @@
__interrupt(rom_sys_c64) void irq()
irq: scope:[irq] from
[0] *BG_COLOR = WHITE
[1] *ptr = ++ *ptr
[2] *BG_COLOR = BLACK
to:irq::@return
irq::@return: scope:[irq] from irq
[3] return
to:@return
void main()
main: scope:[main] from
[4] phi()
to:main::SEI1
main::SEI1: scope:[main] from main
asm { sei }
to:main::@7
main::@7: scope:[main] from main::SEI1
[6] *KERNEL_IRQ = &irq
to:main::CLI1
main::CLI1: scope:[main] from main::@7
asm { cli }
to:main::@1
main::@1: scope:[main] from main::@1 main::@4 main::CLI1
[8] main::i#2 = phi( main::@1/0, main::@4/main::i#1, main::CLI1/0 )
[9] if(main::i#2<$a) goto main::@2
to:main::@1
main::@2: scope:[main] from main::@1 main::@5
[10] main::j#2 = phi( main::@1/0, main::@5/main::j#1 )
[11] if(main::j#2<$a) goto main::@3
to:main::@4
main::@4: scope:[main] from main::@2
[12] main::i#1 = ++ main::i#2
to:main::@1
main::@3: scope:[main] from main::@2
[13] main::k#0 = main::i#2 + main::j#2
[14] if(main::k#0<$80+1) goto main::@5
to:main::@6
main::@6: scope:[main] from main::@3
[15] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = ++ *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR)
to:main::@5
main::@5: scope:[main] from main::@3 main::@6
[16] main::j#1 = ++ main::j#2
to:main::@2

628
src/test/ref/tmp-zp-problem.log Normal file
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@ -0,0 +1,628 @@
Resolved forward reference irq to __interrupt(rom_sys_c64) void irq()
Inlined call vicSelectGfxBank::$0 = call toDd00(vicSelectGfxBank::gfx)
Inlined call call SEI
Inlined call call CLI
Eliminating unused variable with no statement main::$4
CONTROL FLOW GRAPH SSA
void main()
main: scope:[main] from __start
to:main::SEI1
main::SEI1: scope:[main] from main
asm { sei }
to:main::@9
main::@9: scope:[main] from main::SEI1
*KERNEL_IRQ = &irq
to:main::CLI1
main::CLI1: scope:[main] from main::@9
asm { cli }
to:main::@1
main::@1: scope:[main] from main::@2 main::CLI1
main::i#0 = 0
to:main::@2
main::@2: scope:[main] from main::@1 main::@6
main::i#2 = phi( main::@1/main::i#0, main::@6/main::i#1 )
main::$2 = main::i#2 < $a
if(main::$2) goto main::@3
to:main::@1
main::@3: scope:[main] from main::@2
main::i#6 = phi( main::@2/main::i#2 )
main::j#0 = 0
to:main::@4
main::@4: scope:[main] from main::@3 main::@7
main::i#5 = phi( main::@3/main::i#6, main::@7/main::i#7 )
main::j#2 = phi( main::@3/main::j#0, main::@7/main::j#1 )
main::$3 = main::j#2 < $a
if(main::$3) goto main::@5
to:main::@6
main::@5: scope:[main] from main::@4
main::j#3 = phi( main::@4/main::j#2 )
main::i#3 = phi( main::@4/main::i#5 )
main::k#0 = main::i#3 + main::j#3
main::$5 = main::k#0 > $80
main::$6 = ! main::$5
if(main::$6) goto main::@7
to:main::@8
main::@6: scope:[main] from main::@4
main::i#4 = phi( main::@4/main::i#5 )
main::i#1 = ++ main::i#4
to:main::@2
main::@7: scope:[main] from main::@5 main::@8
main::i#7 = phi( main::@5/main::i#3, main::@8/main::i#8 )
main::j#4 = phi( main::@5/main::j#3, main::@8/main::j#5 )
main::j#1 = ++ main::j#4
to:main::@4
main::@8: scope:[main] from main::@5
main::i#8 = phi( main::@5/main::i#3 )
main::j#5 = phi( main::@5/main::j#3 )
*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = ++ *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR)
to:main::@7
main::@return: scope:[main] from
return
to:@return
__interrupt(rom_sys_c64) void irq()
irq: scope:[irq] from
*BG_COLOR = WHITE
*ptr = ++ *ptr
*BG_COLOR = BLACK
to:irq::@return
irq::@return: scope:[irq] from irq
return
to:@return
void __start()
__start: scope:[__start] from
call main
to:__start::@1
__start::@1: scope:[__start] from __start
to:__start::@return
__start::@return: scope:[__start] from __start::@1
return
to:@return
SYMBOL TABLE SSA
__constant char * const BG_COLOR = (char *)$d021
__constant const char BLACK = 0
__constant void (** const KERNEL_IRQ)() = (void (**)())$314
__constant char OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
__constant struct MOS6569_VICII * const VICII = (struct MOS6569_VICII *)$d000
__constant const char WHITE = 1
void __start()
__interrupt(rom_sys_c64) void irq()
void main()
bool main::$2
bool main::$3
bool main::$5
bool main::$6
char main::i
char main::i#0
char main::i#1
char main::i#2
char main::i#3
char main::i#4
char main::i#5
char main::i#6
char main::i#7
char main::i#8
char main::j
char main::j#0
char main::j#1
char main::j#2
char main::j#3
char main::j#4
char main::j#5
char main::k
char main::k#0
__loadstore char * volatile ptr = (char *)$ff00
Adding number conversion cast (unumber) $a in main::$2 = main::i#2 < $a
Adding number conversion cast (unumber) $a in main::$3 = main::j#2 < $a
Adding number conversion cast (unumber) $80 in main::$5 = main::k#0 > $80
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant pointer cast (char *) 53281
Simplifying constant pointer cast (struct MOS6569_VICII *) 53248
Simplifying constant pointer cast (void (**)()) 788
Simplifying constant pointer cast (char *) 65280
Simplifying constant integer cast $a
Simplifying constant integer cast $a
Simplifying constant integer cast $80
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (char) $a
Finalized unsigned number type (char) $a
Finalized unsigned number type (char) $80
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inversing boolean not [15] main::$6 = main::k#0 <= $80 from [14] main::$5 = main::k#0 > $80
Successful SSA optimization Pass2UnaryNotSimplification
Alias main::i#2 = main::i#6
Alias main::i#3 = main::i#5 main::i#4 main::i#8
Alias main::j#2 = main::j#3 main::j#5
Successful SSA optimization Pass2AliasElimination
Alias main::j#2 = main::j#4
Alias main::i#3 = main::i#7
Successful SSA optimization Pass2AliasElimination
Identical Phi Values main::i#3 main::i#2
Successful SSA optimization Pass2IdenticalPhiElimination
Simple Condition main::$2 [6] if(main::i#2<$a) goto main::@3
Simple Condition main::$3 [10] if(main::j#2<$a) goto main::@5
Simple Condition main::$6 [13] if(main::k#0<=$80) goto main::@7
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant main::i#0 = 0
Constant main::j#0 = 0
Successful SSA optimization Pass2ConstantIdentification
Rewriting conditional comparison [13] if(main::k#0<=$80) goto main::@7
Removing unused block main::@return
Successful SSA optimization Pass2EliminateUnusedBlocks
Removing unused procedure __start
Removing unused procedure block __start
Removing unused procedure block __start::@1
Removing unused procedure block __start::@return
Successful SSA optimization PassNEliminateEmptyStart
Adding number conversion cast (unumber) $80+1 in [8] if(main::k#0<$80+1) goto main::@7
Adding number conversion cast (unumber) 1 in [8] if(main::k#0<(unumber)$80+1) goto main::@7
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast $80+(unumber)1
Simplifying constant integer cast 1
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (char) 1
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inlining constant with var siblings main::i#0
Inlining constant with var siblings main::j#0
Constant inlined main::i#0 = 0
Constant inlined main::j#0 = 0
Successful SSA optimization Pass2ConstantInlining
Adding NOP phi() at start of main
Adding NOP phi() at start of main::@1
Adding NOP phi() at start of main::@3
CALL GRAPH
Created 2 initial phi equivalence classes
Coalesced [15] main::i#9 = main::i#1
Coalesced [20] main::j#6 = main::j#1
Coalesced down to 2 phi equivalence classes
Culled Empty Block label main::@1
Culled Empty Block label main::@3
Renumbering block main::@2 to main::@1
Renumbering block main::@4 to main::@2
Renumbering block main::@5 to main::@3
Renumbering block main::@6 to main::@4
Renumbering block main::@7 to main::@5
Renumbering block main::@8 to main::@6
Renumbering block main::@9 to main::@7
Adding NOP phi() at start of main
FINAL CONTROL FLOW GRAPH
__interrupt(rom_sys_c64) void irq()
irq: scope:[irq] from
[0] *BG_COLOR = WHITE
[1] *ptr = ++ *ptr
[2] *BG_COLOR = BLACK
to:irq::@return
irq::@return: scope:[irq] from irq
[3] return
to:@return
void main()
main: scope:[main] from
[4] phi()
to:main::SEI1
main::SEI1: scope:[main] from main
asm { sei }
to:main::@7
main::@7: scope:[main] from main::SEI1
[6] *KERNEL_IRQ = &irq
to:main::CLI1
main::CLI1: scope:[main] from main::@7
asm { cli }
to:main::@1
main::@1: scope:[main] from main::@1 main::@4 main::CLI1
[8] main::i#2 = phi( main::@1/0, main::@4/main::i#1, main::CLI1/0 )
[9] if(main::i#2<$a) goto main::@2
to:main::@1
main::@2: scope:[main] from main::@1 main::@5
[10] main::j#2 = phi( main::@1/0, main::@5/main::j#1 )
[11] if(main::j#2<$a) goto main::@3
to:main::@4
main::@4: scope:[main] from main::@2
[12] main::i#1 = ++ main::i#2
to:main::@1
main::@3: scope:[main] from main::@2
[13] main::k#0 = main::i#2 + main::j#2
[14] if(main::k#0<$80+1) goto main::@5
to:main::@6
main::@6: scope:[main] from main::@3
[15] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = ++ *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR)
to:main::@5
main::@5: scope:[main] from main::@3 main::@6
[16] main::j#1 = ++ main::j#2
to:main::@2
VARIABLE REGISTER WEIGHTS
__interrupt(rom_sys_c64) void irq()
void main()
char main::i
char main::i#1 // 22.0
char main::i#2 // 28.0
char main::j
char main::j#1 // 202.0
char main::j#2 // 80.8
char main::k
char main::k#0 // 202.0
__loadstore char * volatile ptr = (char *) 65280 // 4.0
Initial phi equivalence classes
[ main::i#2 main::i#1 ]
[ main::j#2 main::j#1 ]
Added variable main::k#0 to live range equivalence class [ main::k#0 ]
Added variable ptr to live range equivalence class [ ptr ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
[ main::j#2 main::j#1 ]
[ main::k#0 ]
[ ptr ]
Allocated zp[1]:2 [ main::j#2 main::j#1 ]
Allocated zp[1]:3 [ main::k#0 ]
Allocated zp[1]:4 [ main::i#2 main::i#1 ]
Allocated mem[2] [ ptr ]
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [0] *BG_COLOR = WHITE [ ptr ] ( [ ptr ] { } ) always clobbers reg byte a
Statement [1] *ptr = ++ *ptr [ ] ( [ ] { } ) always clobbers reg byte a reg byte y
Statement [2] *BG_COLOR = BLACK [ ] ( [ ] { } ) always clobbers reg byte a
Statement [6] *KERNEL_IRQ = &irq [ ] ( [ ] { } ) always clobbers reg byte a
Statement [13] main::k#0 = main::i#2 + main::j#2 [ main::i#2 main::j#2 main::k#0 ] ( [ main::i#2 main::j#2 main::k#0 ] { } ) always clobbers reg byte a
Removing always clobbered register reg byte a as potential for zp[1]:4 [ main::i#2 main::i#1 ]
Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::j#2 main::j#1 ]
Statement [0] *BG_COLOR = WHITE [ ptr ] ( [ ptr ] { } ) always clobbers reg byte a
Statement [1] *ptr = ++ *ptr [ ] ( [ ] { } ) always clobbers reg byte a reg byte y
Statement [2] *BG_COLOR = BLACK [ ] ( [ ] { } ) always clobbers reg byte a
Statement [6] *KERNEL_IRQ = &irq [ ] ( [ ] { } ) always clobbers reg byte a
Statement [13] main::k#0 = main::i#2 + main::j#2 [ main::i#2 main::j#2 main::k#0 ] ( [ main::i#2 main::j#2 main::k#0 ] { } ) always clobbers reg byte a
Potential registers zp[1]:4 [ main::i#2 main::i#1 ] : zp[1]:4 , reg byte x , reg byte y ,
Potential registers zp[1]:2 [ main::j#2 main::j#1 ] : zp[1]:2 , reg byte x , reg byte y ,
Potential registers zp[1]:3 [ main::k#0 ] : zp[1]:3 , reg byte a , reg byte x , reg byte y ,
Potential registers mem[2] [ ptr ] : mem[2] ,
REGISTER UPLIFT SCOPES
Uplift Scope [main] 282.8: zp[1]:2 [ main::j#2 main::j#1 ] 202: zp[1]:3 [ main::k#0 ] 50: zp[1]:4 [ main::i#2 main::i#1 ]
Uplift Scope [] 4: mem[2] [ ptr ]
Uplift Scope [MOS6526_CIA]
Uplift Scope [MOS6569_VICII]
Uplift Scope [MOS6581_SID]
Uplift Scope [irq]
Uplifting [main] best 6098 combination reg byte y [ main::j#2 main::j#1 ] reg byte a [ main::k#0 ] reg byte x [ main::i#2 main::i#1 ]
Uplifting [] best 6098 combination mem[2] [ ptr ]
Uplifting [MOS6526_CIA] best 6098 combination
Uplifting [MOS6569_VICII] best 6098 combination
Uplifting [MOS6581_SID] best 6098 combination
Uplifting [irq] best 6098 combination
ASSEMBLER BEFORE OPTIMIZATION
// File Comments
// Demonstrates a problem where temporary zp-variables are overwrites each other between different "threads"
/// @file
/// Commodore 64 Registers and Constants
/// @file
/// The MOS 6526 Complex Interface Adapter (CIA)
///
/// http://archive.6502.org/datasheets/mos_6526_cia_recreated.pdf
// Upstart
// Commodore 64 PRG executable file
.file [name="tmp-zp-problem.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
// Global Constants & labels
/// The colors of the C64
.const BLACK = 0
.const WHITE = 1
.const OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
/// $D021 Background Color 0
.label BG_COLOR = $d021
/// The VIC-II MOS 6567/6569
.label VICII = $d000
/// The vector used when the KERNAL serves IRQ interrupts
.label KERNEL_IRQ = $314
.segment Code
// irq
// The Interrupt Handler
irq: {
// interrupt(isr_rom_sys_c64_entry) -- isr_rom_sys_c64_entry
// [0] *BG_COLOR = WHITE -- _deref_pbuc1=vbuc2
lda #WHITE
sta BG_COLOR
// [1] *ptr = ++ *ptr -- _deref_pbum1=_inc__deref_pbum1
ldy ptr
sty.z $fe
ldy ptr+1
sty.z $ff
ldy #0
lda ($fe),y
clc
adc #1
sta ($fe),y
// [2] *BG_COLOR = BLACK -- _deref_pbuc1=vbuc2
lda #BLACK
sta BG_COLOR
jmp __breturn
// irq::@return
__breturn:
// [3] return
// interrupt(isr_rom_sys_c64_exit) -- isr_rom_sys_c64_exit
jmp $ea31
}
// main
// Setup the IRQ routine
main: {
jmp SEI1
// main::SEI1
SEI1:
// asm { sei }
sei
jmp __b7
// main::@7
__b7:
// [6] *KERNEL_IRQ = &irq -- _deref_qprc1=pprc2
lda #<irq
sta KERNEL_IRQ
lda #>irq
sta KERNEL_IRQ+1
jmp CLI1
// main::CLI1
CLI1:
// asm { cli }
cli
// [8] phi from main::@1 main::CLI1 to main::@1 [phi:main::@1/main::CLI1->main::@1]
__b1_from___b1:
__b1_from_CLI1:
// [8] phi main::i#2 = 0 [phi:main::@1/main::CLI1->main::@1#0] -- vbuxx=vbuc1
ldx #0
jmp __b1
// main::@1
__b1:
// [9] if(main::i#2<$a) goto main::@2 -- vbuxx_lt_vbuc1_then_la1
cpx #$a
bcc __b2_from___b1
jmp __b1_from___b1
// [10] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
__b2_from___b1:
// [10] phi main::j#2 = 0 [phi:main::@1->main::@2#0] -- vbuyy=vbuc1
ldy #0
jmp __b2
// main::@2
__b2:
// [11] if(main::j#2<$a) goto main::@3 -- vbuyy_lt_vbuc1_then_la1
cpy #$a
bcc __b3
jmp __b4
// main::@4
__b4:
// [12] main::i#1 = ++ main::i#2 -- vbuxx=_inc_vbuxx
inx
// [8] phi from main::@4 to main::@1 [phi:main::@4->main::@1]
__b1_from___b4:
// [8] phi main::i#2 = main::i#1 [phi:main::@4->main::@1#0] -- register_copy
jmp __b1
// main::@3
__b3:
// [13] main::k#0 = main::i#2 + main::j#2 -- vbuaa=vbuxx_plus_vbuyy
txa
sty.z $ff
clc
adc.z $ff
// [14] if(main::k#0<$80+1) goto main::@5 -- vbuaa_lt_vbuc1_then_la1
cmp #$80+1
bcc __b5
jmp __b6
// main::@6
__b6:
// [15] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = ++ *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) -- _deref_pbuc1=_inc__deref_pbuc1
inc VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
jmp __b5
// main::@5
__b5:
// [16] main::j#1 = ++ main::j#2 -- vbuyy=_inc_vbuyy
iny
// [10] phi from main::@5 to main::@2 [phi:main::@5->main::@2]
__b2_from___b5:
// [10] phi main::j#2 = main::j#1 [phi:main::@5->main::@2#0] -- register_copy
jmp __b2
}
// File Data
.segment Data
ptr: .word $ff00
ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __breturn
Removing instruction jmp SEI1
Removing instruction jmp __b7
Removing instruction jmp CLI1
Removing instruction jmp __b1
Removing instruction jmp __b2
Removing instruction jmp __b4
Removing instruction jmp __b6
Removing instruction jmp __b5
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __b1_from___b1 with __b1_from_CLI1
Removing instruction __b1_from___b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction __breturn:
Removing instruction SEI1:
Removing instruction __b7:
Removing instruction CLI1:
Removing instruction __b4:
Removing instruction __b1_from___b4:
Removing instruction __b6:
Removing instruction __b2_from___b5:
Succesful ASM optimization Pass5UnusedLabelElimination
Relabelling long label __b1_from_CLI1 to __b4
Relabelling long label __b2_from___b1 to __b6
Succesful ASM optimization Pass5RelabelLongLabels
FINAL SYMBOL TABLE
__constant char * const BG_COLOR = (char *) 53281
__constant const char BLACK = 0
__constant void (** const KERNEL_IRQ)() = (void (**)()) 788
__constant char OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
__constant struct MOS6569_VICII * const VICII = (struct MOS6569_VICII *) 53248
__constant const char WHITE = 1
__interrupt(rom_sys_c64) void irq()
void main()
char main::i
char main::i#1 // reg byte x 22.0
char main::i#2 // reg byte x 28.0
char main::j
char main::j#1 // reg byte y 202.0
char main::j#2 // reg byte y 80.8
char main::k
char main::k#0 // reg byte a 202.0
__loadstore char * volatile ptr = (char *) 65280 // mem[2] 4.0
reg byte x [ main::i#2 main::i#1 ]
reg byte y [ main::j#2 main::j#1 ]
reg byte a [ main::k#0 ]
mem[2] [ ptr ]
FINAL ASSEMBLER
Score: 4559
// File Comments
// Demonstrates a problem where temporary zp-variables are overwrites each other between different "threads"
/// @file
/// Commodore 64 Registers and Constants
/// @file
/// The MOS 6526 Complex Interface Adapter (CIA)
///
/// http://archive.6502.org/datasheets/mos_6526_cia_recreated.pdf
// Upstart
// Commodore 64 PRG executable file
.file [name="tmp-zp-problem.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
// Global Constants & labels
/// The colors of the C64
.const BLACK = 0
.const WHITE = 1
.const OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
/// $D021 Background Color 0
.label BG_COLOR = $d021
/// The VIC-II MOS 6567/6569
.label VICII = $d000
/// The vector used when the KERNAL serves IRQ interrupts
.label KERNEL_IRQ = $314
.segment Code
// irq
// The Interrupt Handler
irq: {
// interrupt(isr_rom_sys_c64_entry) -- isr_rom_sys_c64_entry
// *BG_COLOR = WHITE
// [0] *BG_COLOR = WHITE -- _deref_pbuc1=vbuc2
lda #WHITE
sta BG_COLOR
// (*ptr)++;
// [1] *ptr = ++ *ptr -- _deref_pbum1=_inc__deref_pbum1
ldy ptr
sty.z $fe
ldy ptr+1
sty.z $ff
ldy #0
lda ($fe),y
clc
adc #1
sta ($fe),y
// *BG_COLOR = BLACK
// [2] *BG_COLOR = BLACK -- _deref_pbuc1=vbuc2
lda #BLACK
sta BG_COLOR
// irq::@return
// }
// [3] return
// interrupt(isr_rom_sys_c64_exit) -- isr_rom_sys_c64_exit
jmp $ea31
}
// main
// Setup the IRQ routine
main: {
// main::SEI1
// asm
// asm { sei }
sei
// main::@7
// *KERNEL_IRQ = &irq
// [6] *KERNEL_IRQ = &irq -- _deref_qprc1=pprc2
lda #<irq
sta KERNEL_IRQ
lda #>irq
sta KERNEL_IRQ+1
// main::CLI1
// asm
// asm { cli }
cli
// [8] phi from main::@1 main::CLI1 to main::@1 [phi:main::@1/main::CLI1->main::@1]
__b4:
// [8] phi main::i#2 = 0 [phi:main::@1/main::CLI1->main::@1#0] -- vbuxx=vbuc1
ldx #0
// main::@1
__b1:
// for(char i=0;i<10;i++)
// [9] if(main::i#2<$a) goto main::@2 -- vbuxx_lt_vbuc1_then_la1
cpx #$a
bcc __b6
jmp __b4
// [10] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
__b6:
// [10] phi main::j#2 = 0 [phi:main::@1->main::@2#0] -- vbuyy=vbuc1
ldy #0
// main::@2
__b2:
// for(char j=0;j<10;j++)
// [11] if(main::j#2<$a) goto main::@3 -- vbuyy_lt_vbuc1_then_la1
cpy #$a
bcc __b3
// main::@4
// for(char i=0;i<10;i++)
// [12] main::i#1 = ++ main::i#2 -- vbuxx=_inc_vbuxx
inx
// [8] phi from main::@4 to main::@1 [phi:main::@4->main::@1]
// [8] phi main::i#2 = main::i#1 [phi:main::@4->main::@1#0] -- register_copy
jmp __b1
// main::@3
__b3:
// char k = i+j
// [13] main::k#0 = main::i#2 + main::j#2 -- vbuaa=vbuxx_plus_vbuyy
txa
sty.z $ff
clc
adc.z $ff
// if(k>0x80)
// [14] if(main::k#0<$80+1) goto main::@5 -- vbuaa_lt_vbuc1_then_la1
cmp #$80+1
bcc __b5
// main::@6
// VICII->BORDER_COLOR++;
// [15] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = ++ *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) -- _deref_pbuc1=_inc__deref_pbuc1
inc VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
// main::@5
__b5:
// for(char j=0;j<10;j++)
// [16] main::j#1 = ++ main::j#2 -- vbuyy=_inc_vbuyy
iny
// [10] phi from main::@5 to main::@2 [phi:main::@5->main::@2]
// [10] phi main::j#2 = main::j#1 [phi:main::@5->main::@2#0] -- register_copy
jmp __b2
}
// File Data
.segment Data
ptr: .word $ff00

22
src/test/ref/tmp-zp-problem.sym Normal file
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@ -0,0 +1,22 @@
__constant char * const BG_COLOR = (char *) 53281
__constant const char BLACK = 0
__constant void (** const KERNEL_IRQ)() = (void (**)()) 788
__constant char OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
__constant struct MOS6569_VICII * const VICII = (struct MOS6569_VICII *) 53248
__constant const char WHITE = 1
__interrupt(rom_sys_c64) void irq()
void main()
char main::i
char main::i#1 // reg byte x 22.0
char main::i#2 // reg byte x 28.0
char main::j
char main::j#1 // reg byte y 202.0
char main::j#2 // reg byte y 80.8
char main::k
char main::k#0 // reg byte a 202.0
__loadstore char * volatile ptr = (char *) 65280 // mem[2] 4.0
reg byte x [ main::i#2 main::i#1 ]
reg byte y [ main::j#2 main::j#1 ]
reg byte a [ main::k#0 ]
mem[2] [ ptr ]