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kickc/src/test/ref/irq-hardware-clobber-jsr.log

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Resolved forward reference irq to interrupt(HARDWARE_CLOBBER)(void()) irq()
Inlined call (byte~) vicSelectGfxBank::$0 ← call toDd00 (byte*) vicSelectGfxBank::gfx
CONTROL FLOW GRAPH SSA
@begin: scope:[] from
to:@1
(void()) main()
main: scope:[main] from @1
asm { sei }
*((const nomodify byte*) PROCPORT_DDR) ← (const nomodify byte) PROCPORT_DDR_MEMORY_MASK
*((const nomodify byte*) PROCPORT) ← (const nomodify byte) PROCPORT_RAM_IO
*((byte*)(const nomodify struct MOS6526_CIA*) CIA1+(const byte) OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) ← (const nomodify byte) CIA_INTERRUPT_CLEAR
*((const nomodify byte*) VIC_CONTROL) ← *((const nomodify byte*) VIC_CONTROL) | (number) $80
*((const nomodify byte*) RASTER) ← (number) 0
*((const nomodify byte*) IRQ_ENABLE) ← (const nomodify byte) IRQ_RASTER
*((const nomodify void()**) HARDWARE_IRQ) ← &interrupt(HARDWARE_CLOBBER)(void()) irq()
asm { cli }
to:main::@1
main::@1: scope:[main] from main main::@2
if(true) goto main::@2
to:main::@return
main::@2: scope:[main] from main::@1
*((const nomodify byte*) BORDER_COLOR) ← ++ *((const nomodify byte*) BORDER_COLOR)
to:main::@1
main::@return: scope:[main] from main::@1
return
to:@return
interrupt(HARDWARE_CLOBBER)(void()) irq()
irq: scope:[irq] from
call do_irq
to:irq::@1
irq::@1: scope:[irq] from irq
to:irq::@return
irq::@return: scope:[irq] from irq::@1
return
to:@return
(void()) do_irq()
do_irq: scope:[do_irq] from irq
*((const nomodify byte*) BG_COLOR) ← (const nomodify byte) WHITE
*((const nomodify byte*) BG_COLOR) ← (const nomodify byte) BLACK
*((const nomodify byte*) IRQ_STATUS) ← (const nomodify byte) IRQ_RASTER
to:do_irq::@return
do_irq::@return: scope:[do_irq] from do_irq
return
to:@return
@1: scope:[] from @begin
call main
to:@2
@2: scope:[] from @1
to:@end
@end: scope:[] from @2
SYMBOL TABLE SSA
(label) @1
(label) @2
(label) @begin
(label) @end
(const nomodify byte*) BG_COLOR = (byte*)(number) $d021
(const nomodify byte) BLACK = (byte) 0
(const nomodify byte*) BORDER_COLOR = (byte*)(number) $d020
(const nomodify struct MOS6526_CIA*) CIA1 = (struct MOS6526_CIA*)(number) $dc00
(const nomodify byte) CIA_INTERRUPT_CLEAR = (byte) $7f
(const nomodify void()**) HARDWARE_IRQ = (void()**)(number) $fffe
(const nomodify byte*) IRQ_ENABLE = (byte*)(number) $d01a
(const nomodify byte) IRQ_RASTER = (byte) 1
(const nomodify byte*) IRQ_STATUS = (byte*)(number) $d019
(byte) MOS6526_CIA::INTERRUPT
(byte) MOS6526_CIA::PORT_A
(byte) MOS6526_CIA::PORT_A_DDR
(byte) MOS6526_CIA::PORT_B
(byte) MOS6526_CIA::PORT_B_DDR
(byte) MOS6526_CIA::SERIAL_DATA
(word) MOS6526_CIA::TIMER_A
(byte) MOS6526_CIA::TIMER_A_CONTROL
(word) MOS6526_CIA::TIMER_B
(byte) MOS6526_CIA::TIMER_B_CONTROL
(byte) MOS6526_CIA::TOD_10THS
(byte) MOS6526_CIA::TOD_HOURS
(byte) MOS6526_CIA::TOD_MIN
(byte) MOS6526_CIA::TOD_SEC
(byte) MOS6569_VICII::BG_COLOR
(byte) MOS6569_VICII::BG_COLOR1
(byte) MOS6569_VICII::BG_COLOR2
(byte) MOS6569_VICII::BG_COLOR3
(byte) MOS6569_VICII::BORDER_COLOR
(byte) MOS6569_VICII::CONTROL1
(byte) MOS6569_VICII::CONTROL2
(byte) MOS6569_VICII::IRQ_ENABLE
(byte) MOS6569_VICII::IRQ_STATUS
(byte) MOS6569_VICII::LIGHTPEN_X
(byte) MOS6569_VICII::LIGHTPEN_Y
(byte) MOS6569_VICII::MEMORY
(byte) MOS6569_VICII::RASTER
(byte) MOS6569_VICII::SPRITE0_COLOR
(byte) MOS6569_VICII::SPRITE0_X
(byte) MOS6569_VICII::SPRITE0_Y
(byte) MOS6569_VICII::SPRITE1_COLOR
(byte) MOS6569_VICII::SPRITE1_X
(byte) MOS6569_VICII::SPRITE1_Y
(byte) MOS6569_VICII::SPRITE2_COLOR
(byte) MOS6569_VICII::SPRITE2_X
(byte) MOS6569_VICII::SPRITE2_Y
(byte) MOS6569_VICII::SPRITE3_COLOR
(byte) MOS6569_VICII::SPRITE3_X
(byte) MOS6569_VICII::SPRITE3_Y
(byte) MOS6569_VICII::SPRITE4_COLOR
(byte) MOS6569_VICII::SPRITE4_X
(byte) MOS6569_VICII::SPRITE4_Y
(byte) MOS6569_VICII::SPRITE5_COLOR
(byte) MOS6569_VICII::SPRITE5_X
(byte) MOS6569_VICII::SPRITE5_Y
(byte) MOS6569_VICII::SPRITE6_COLOR
(byte) MOS6569_VICII::SPRITE6_X
(byte) MOS6569_VICII::SPRITE6_Y
(byte) MOS6569_VICII::SPRITE7_COLOR
(byte) MOS6569_VICII::SPRITE7_X
(byte) MOS6569_VICII::SPRITE7_Y
(byte) MOS6569_VICII::SPRITES_BG_COLLISION
(byte) MOS6569_VICII::SPRITES_COLLISION
(byte) MOS6569_VICII::SPRITES_ENABLE
(byte) MOS6569_VICII::SPRITES_EXPAND_X
(byte) MOS6569_VICII::SPRITES_EXPAND_Y
(byte) MOS6569_VICII::SPRITES_MC
(byte) MOS6569_VICII::SPRITES_MCOLOR1
(byte) MOS6569_VICII::SPRITES_MCOLOR2
(byte) MOS6569_VICII::SPRITES_PRIORITY
(byte) MOS6569_VICII::SPRITES_XMSB
(byte) MOS6581_SID::CH1_ATTACK_DECAY
(byte) MOS6581_SID::CH1_CONTROL
(word) MOS6581_SID::CH1_FREQ
(word) MOS6581_SID::CH1_PULSE_WIDTH
(byte) MOS6581_SID::CH1_SUSTAIN_RELEASE
(byte) MOS6581_SID::CH2_ATTACK_DECAY
(byte) MOS6581_SID::CH2_CONTROL
(word) MOS6581_SID::CH2_FREQ
(word) MOS6581_SID::CH2_PULSE_WIDTH
(byte) MOS6581_SID::CH2_SUSTAIN_RELEASE
(byte) MOS6581_SID::CH3_ATTACK_DECAY
(byte) MOS6581_SID::CH3_CONTROL
(byte) MOS6581_SID::CH3_ENV
(word) MOS6581_SID::CH3_FREQ
(byte) MOS6581_SID::CH3_OSC
(word) MOS6581_SID::CH3_PULSE_WIDTH
(byte) MOS6581_SID::CH3_SUSTAIN_RELEASE
(byte) MOS6581_SID::FILTER_CUTOFF_HIGH
(byte) MOS6581_SID::FILTER_CUTOFF_LOW
(byte) MOS6581_SID::FILTER_SETUP
(byte) MOS6581_SID::POT_X
(byte) MOS6581_SID::POT_Y
(byte) MOS6581_SID::VOLUME_FILTER_MODE
(const byte) OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = (byte) $d
(const nomodify byte*) PROCPORT = (byte*)(number) 1
(const nomodify byte*) PROCPORT_DDR = (byte*)(number) 0
(const nomodify byte) PROCPORT_DDR_MEMORY_MASK = (byte) 7
(const nomodify byte) PROCPORT_RAM_IO = (byte) 5
(const nomodify byte*) RASTER = (byte*)(number) $d012
(const nomodify byte*) VIC_CONTROL = (byte*)(number) $d011
(const nomodify byte) WHITE = (byte) 1
(void()) do_irq()
(label) do_irq::@return
interrupt(HARDWARE_CLOBBER)(void()) irq()
(label) irq::@1
(label) irq::@return
(void()) main()
(label) main::@1
(label) main::@2
(label) main::@return
Adding number conversion cast (unumber) $80 in *((const nomodify byte*) VIC_CONTROL) ← *((const nomodify byte*) VIC_CONTROL) | (number) $80
Adding number conversion cast (unumber) 0 in *((const nomodify byte*) RASTER) ← (number) 0
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast *((const nomodify byte*) RASTER) ← (unumber)(number) 0
Successful SSA optimization Pass2InlineCast
Simplifying constant pointer cast (byte*) 53266
Simplifying constant pointer cast (byte*) 53280
Simplifying constant pointer cast (byte*) 53281
Simplifying constant pointer cast (byte*) 53265
Simplifying constant pointer cast (byte*) 53273
Simplifying constant pointer cast (byte*) 53274
Simplifying constant pointer cast (byte*) 0
Simplifying constant pointer cast (byte*) 1
Simplifying constant pointer cast (struct MOS6526_CIA*) 56320
Simplifying constant pointer cast (void()**) 65534
Simplifying constant integer cast $80
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) $80
Finalized unsigned number type (byte) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
if() condition always true - replacing block destination [9] if(true) goto main::@2
Successful SSA optimization Pass2ConstantIfs
Removing unused block main::@return
Successful SSA optimization Pass2EliminateUnusedBlocks
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @2
Adding NOP phi() at start of @end
Adding NOP phi() at start of main::@1
Adding NOP phi() at start of irq
Adding NOP phi() at start of irq::@1
CALL GRAPH
Calls in [] to main:2
Calls in [irq] to do_irq:17
Created 0 initial phi equivalence classes
Coalesced down to 0 phi equivalence classes
Culled Empty Block (label) @2
Culled Empty Block (label) main::@1
Culled Empty Block (label) irq::@1
Renumbering block main::@2 to main::@1
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @end
Adding NOP phi() at start of irq
FINAL CONTROL FLOW GRAPH
@begin: scope:[] from
[0] phi()
to:@1
@1: scope:[] from @begin
[1] phi()
[2] call main
to:@end
@end: scope:[] from @1
[3] phi()
(void()) main()
main: scope:[main] from @1
asm { sei }
[5] *((const nomodify byte*) PROCPORT_DDR) ← (const nomodify byte) PROCPORT_DDR_MEMORY_MASK
[6] *((const nomodify byte*) PROCPORT) ← (const nomodify byte) PROCPORT_RAM_IO
[7] *((byte*)(const nomodify struct MOS6526_CIA*) CIA1+(const byte) OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) ← (const nomodify byte) CIA_INTERRUPT_CLEAR
[8] *((const nomodify byte*) VIC_CONTROL) ← *((const nomodify byte*) VIC_CONTROL) | (byte) $80
[9] *((const nomodify byte*) RASTER) ← (byte) 0
[10] *((const nomodify byte*) IRQ_ENABLE) ← (const nomodify byte) IRQ_RASTER
[11] *((const nomodify void()**) HARDWARE_IRQ) ← &interrupt(HARDWARE_CLOBBER)(void()) irq()
asm { cli }
to:main::@1
main::@1: scope:[main] from main main::@1
[13] *((const nomodify byte*) BORDER_COLOR) ← ++ *((const nomodify byte*) BORDER_COLOR)
to:main::@1
interrupt(HARDWARE_CLOBBER)(void()) irq()
irq: scope:[irq] from
[14] phi()
[15] call do_irq
to:irq::@return
irq::@return: scope:[irq] from irq
[16] return
to:@return
(void()) do_irq()
do_irq: scope:[do_irq] from irq
[17] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) WHITE
[18] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) BLACK
[19] *((const nomodify byte*) IRQ_STATUS) ← (const nomodify byte) IRQ_RASTER
to:do_irq::@return
do_irq::@return: scope:[do_irq] from do_irq
[20] return
to:@return
VARIABLE REGISTER WEIGHTS
(byte) MOS6526_CIA::INTERRUPT
(byte) MOS6526_CIA::PORT_A
(byte) MOS6526_CIA::PORT_A_DDR
(byte) MOS6526_CIA::PORT_B
(byte) MOS6526_CIA::PORT_B_DDR
(byte) MOS6526_CIA::SERIAL_DATA
(word) MOS6526_CIA::TIMER_A
(byte) MOS6526_CIA::TIMER_A_CONTROL
(word) MOS6526_CIA::TIMER_B
(byte) MOS6526_CIA::TIMER_B_CONTROL
(byte) MOS6526_CIA::TOD_10THS
(byte) MOS6526_CIA::TOD_HOURS
(byte) MOS6526_CIA::TOD_MIN
(byte) MOS6526_CIA::TOD_SEC
(byte) MOS6569_VICII::BG_COLOR
(byte) MOS6569_VICII::BG_COLOR1
(byte) MOS6569_VICII::BG_COLOR2
(byte) MOS6569_VICII::BG_COLOR3
(byte) MOS6569_VICII::BORDER_COLOR
(byte) MOS6569_VICII::CONTROL1
(byte) MOS6569_VICII::CONTROL2
(byte) MOS6569_VICII::IRQ_ENABLE
(byte) MOS6569_VICII::IRQ_STATUS
(byte) MOS6569_VICII::LIGHTPEN_X
(byte) MOS6569_VICII::LIGHTPEN_Y
(byte) MOS6569_VICII::MEMORY
(byte) MOS6569_VICII::RASTER
(byte) MOS6569_VICII::SPRITE0_COLOR
(byte) MOS6569_VICII::SPRITE0_X
(byte) MOS6569_VICII::SPRITE0_Y
(byte) MOS6569_VICII::SPRITE1_COLOR
(byte) MOS6569_VICII::SPRITE1_X
(byte) MOS6569_VICII::SPRITE1_Y
(byte) MOS6569_VICII::SPRITE2_COLOR
(byte) MOS6569_VICII::SPRITE2_X
(byte) MOS6569_VICII::SPRITE2_Y
(byte) MOS6569_VICII::SPRITE3_COLOR
(byte) MOS6569_VICII::SPRITE3_X
(byte) MOS6569_VICII::SPRITE3_Y
(byte) MOS6569_VICII::SPRITE4_COLOR
(byte) MOS6569_VICII::SPRITE4_X
(byte) MOS6569_VICII::SPRITE4_Y
(byte) MOS6569_VICII::SPRITE5_COLOR
(byte) MOS6569_VICII::SPRITE5_X
(byte) MOS6569_VICII::SPRITE5_Y
(byte) MOS6569_VICII::SPRITE6_COLOR
(byte) MOS6569_VICII::SPRITE6_X
(byte) MOS6569_VICII::SPRITE6_Y
(byte) MOS6569_VICII::SPRITE7_COLOR
(byte) MOS6569_VICII::SPRITE7_X
(byte) MOS6569_VICII::SPRITE7_Y
(byte) MOS6569_VICII::SPRITES_BG_COLLISION
(byte) MOS6569_VICII::SPRITES_COLLISION
(byte) MOS6569_VICII::SPRITES_ENABLE
(byte) MOS6569_VICII::SPRITES_EXPAND_X
(byte) MOS6569_VICII::SPRITES_EXPAND_Y
(byte) MOS6569_VICII::SPRITES_MC
(byte) MOS6569_VICII::SPRITES_MCOLOR1
(byte) MOS6569_VICII::SPRITES_MCOLOR2
(byte) MOS6569_VICII::SPRITES_PRIORITY
(byte) MOS6569_VICII::SPRITES_XMSB
(byte) MOS6581_SID::CH1_ATTACK_DECAY
(byte) MOS6581_SID::CH1_CONTROL
(word) MOS6581_SID::CH1_FREQ
(word) MOS6581_SID::CH1_PULSE_WIDTH
(byte) MOS6581_SID::CH1_SUSTAIN_RELEASE
(byte) MOS6581_SID::CH2_ATTACK_DECAY
(byte) MOS6581_SID::CH2_CONTROL
(word) MOS6581_SID::CH2_FREQ
(word) MOS6581_SID::CH2_PULSE_WIDTH
(byte) MOS6581_SID::CH2_SUSTAIN_RELEASE
(byte) MOS6581_SID::CH3_ATTACK_DECAY
(byte) MOS6581_SID::CH3_CONTROL
(byte) MOS6581_SID::CH3_ENV
(word) MOS6581_SID::CH3_FREQ
(byte) MOS6581_SID::CH3_OSC
(word) MOS6581_SID::CH3_PULSE_WIDTH
(byte) MOS6581_SID::CH3_SUSTAIN_RELEASE
(byte) MOS6581_SID::FILTER_CUTOFF_HIGH
(byte) MOS6581_SID::FILTER_CUTOFF_LOW
(byte) MOS6581_SID::FILTER_SETUP
(byte) MOS6581_SID::POT_X
(byte) MOS6581_SID::POT_Y
(byte) MOS6581_SID::VOLUME_FILTER_MODE
(void()) do_irq()
interrupt(HARDWARE_CLOBBER)(void()) irq()
(void()) main()
Initial phi equivalence classes
Complete equivalence classes
INITIAL ASM
Target platform is c64basic / MOS6502X
// File Comments
// A minimal working raster hardware IRQ with clobber-based register savings
// Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
// Global Constants & labels
// Value that disables all CIA interrupts when stored to the CIA Interrupt registers
.const CIA_INTERRUPT_CLEAR = $7f
// Bits for the VICII IRQ Status/Enable Registers
.const IRQ_RASTER = 1
// Mask for PROCESSOR_PORT_DDR which allows only memory configuration to be written
.const PROCPORT_DDR_MEMORY_MASK = 7
// RAM in 0xA000, 0xE000 I/O in 0xD000
.const PROCPORT_RAM_IO = 5
// The colors of the C64
.const BLACK = 0
.const WHITE = 1
.const OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
.label RASTER = $d012
.label BORDER_COLOR = $d020
.label BG_COLOR = $d021
.label VIC_CONTROL = $d011
// VIC II IRQ Status Register
.label IRQ_STATUS = $d019
// VIC II IRQ Enable Register
.label IRQ_ENABLE = $d01a
// Processor port data direction register
.label PROCPORT_DDR = 0
// Processor Port Register controlling RAM/ROM configuration and the datasette
.label PROCPORT = 1
// The CIA#1: keyboard matrix, joystick #1/#2
.label CIA1 = $dc00
// The vector used when the HARDWARE serves IRQ interrupts
.label HARDWARE_IRQ = $fffe
// @begin
__bbegin:
// [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
jmp __b1
// @1
__b1:
// [2] call main
jsr main
// [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
jmp __bend
// @end
__bend:
// main
main: {
// asm { sei }
sei
// [5] *((const nomodify byte*) PROCPORT_DDR) ← (const nomodify byte) PROCPORT_DDR_MEMORY_MASK -- _deref_pbuc1=vbuc2
// Disable kernal & basic
lda #PROCPORT_DDR_MEMORY_MASK
sta PROCPORT_DDR
// [6] *((const nomodify byte*) PROCPORT) ← (const nomodify byte) PROCPORT_RAM_IO -- _deref_pbuc1=vbuc2
lda #PROCPORT_RAM_IO
sta PROCPORT
// [7] *((byte*)(const nomodify struct MOS6526_CIA*) CIA1+(const byte) OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) ← (const nomodify byte) CIA_INTERRUPT_CLEAR -- _deref_pbuc1=vbuc2
// Disable CIA 1 Timer IRQ
lda #CIA_INTERRUPT_CLEAR
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT
// [8] *((const nomodify byte*) VIC_CONTROL) ← *((const nomodify byte*) VIC_CONTROL) | (byte) $80 -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2
// Set raster line to $100
lda #$80
ora VIC_CONTROL
sta VIC_CONTROL
// [9] *((const nomodify byte*) RASTER) ← (byte) 0 -- _deref_pbuc1=vbuc2
lda #0
sta RASTER
// [10] *((const nomodify byte*) IRQ_ENABLE) ← (const nomodify byte) IRQ_RASTER -- _deref_pbuc1=vbuc2
// Enable Raster Interrupt
lda #IRQ_RASTER
sta IRQ_ENABLE
// [11] *((const nomodify void()**) HARDWARE_IRQ) ← &interrupt(HARDWARE_CLOBBER)(void()) irq() -- _deref_pptc1=pprc2
// Set the IRQ routine
lda #<irq
sta HARDWARE_IRQ
lda #>irq
sta HARDWARE_IRQ+1
// asm { cli }
cli
jmp __b1
// main::@1
__b1:
// [13] *((const nomodify byte*) BORDER_COLOR) ← ++ *((const nomodify byte*) BORDER_COLOR) -- _deref_pbuc1=_inc__deref_pbuc1
inc BORDER_COLOR
jmp __b1
}
// irq
// Interrupt Routine
irq: {
// entry interrupt(HARDWARE_CLOBBER)
sta rega+1
stx regx+1
sty regy+1
// [15] call do_irq
jsr do_irq
jmp __breturn
// irq::@return
__breturn:
// [16] return - exit interrupt(HARDWARE_CLOBBER)
rega:
lda #00
regx:
ldx #00
regy:
ldy #00
rti
}
// do_irq
do_irq: {
// [17] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) WHITE -- _deref_pbuc1=vbuc2
lda #WHITE
sta BG_COLOR
// [18] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) BLACK -- _deref_pbuc1=vbuc2
lda #BLACK
sta BG_COLOR
// [19] *((const nomodify byte*) IRQ_STATUS) ← (const nomodify byte) IRQ_RASTER -- _deref_pbuc1=vbuc2
// Acknowledge the IRQ
lda #IRQ_RASTER
sta IRQ_STATUS
jmp __breturn
// do_irq::@return
__breturn:
// [20] return
rts
}
// File Data
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [5] *((const nomodify byte*) PROCPORT_DDR) ← (const nomodify byte) PROCPORT_DDR_MEMORY_MASK [ ] ( main:2 [ ] { } ) always clobbers reg byte a
Statement [6] *((const nomodify byte*) PROCPORT) ← (const nomodify byte) PROCPORT_RAM_IO [ ] ( main:2 [ ] { } ) always clobbers reg byte a
Statement [7] *((byte*)(const nomodify struct MOS6526_CIA*) CIA1+(const byte) OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) ← (const nomodify byte) CIA_INTERRUPT_CLEAR [ ] ( main:2 [ ] { } ) always clobbers reg byte a
Statement [8] *((const nomodify byte*) VIC_CONTROL) ← *((const nomodify byte*) VIC_CONTROL) | (byte) $80 [ ] ( main:2 [ ] { } ) always clobbers reg byte a
Statement [9] *((const nomodify byte*) RASTER) ← (byte) 0 [ ] ( main:2 [ ] { } ) always clobbers reg byte a
Statement [10] *((const nomodify byte*) IRQ_ENABLE) ← (const nomodify byte) IRQ_RASTER [ ] ( main:2 [ ] { } ) always clobbers reg byte a
Statement [11] *((const nomodify void()**) HARDWARE_IRQ) ← &interrupt(HARDWARE_CLOBBER)(void()) irq() [ ] ( main:2 [ ] { } ) always clobbers reg byte a
Statement [16] return [ ] ( [ ] { } ) always clobbers reg byte a reg byte x reg byte y
Statement [17] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) WHITE [ ] ( do_irq:15 [ ] { } ) always clobbers reg byte a
Statement [18] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) BLACK [ ] ( do_irq:15 [ ] { } ) always clobbers reg byte a
Statement [19] *((const nomodify byte*) IRQ_STATUS) ← (const nomodify byte) IRQ_RASTER [ ] ( do_irq:15 [ ] { } ) always clobbers reg byte a
REGISTER UPLIFT SCOPES
Uplift Scope [MOS6526_CIA]
Uplift Scope [MOS6569_VICII]
Uplift Scope [MOS6581_SID]
Uplift Scope [main]
Uplift Scope [irq]
Uplift Scope [do_irq]
Uplift Scope []
Uplifting [MOS6526_CIA] best 329 combination
Uplifting [MOS6569_VICII] best 329 combination
Uplifting [MOS6581_SID] best 329 combination
Uplifting [main] best 329 combination
Uplifting [irq] best 329 combination
Uplifting [do_irq] best 329 combination
Uplifting [] best 329 combination
Interrupt procedure irq clobbers ANZ
Removing interrupt register storage stx regx+1 in 22 entry interrupt(HARDWARE_CLOBBER)
Removing interrupt register storage sty regy+1 in 22 entry interrupt(HARDWARE_CLOBBER)
Removing interrupt register storage regx: in 25 [16] return - exit interrupt(HARDWARE_CLOBBER)
Removing interrupt register storage ldx #00 in 25 [16] return - exit interrupt(HARDWARE_CLOBBER)
Removing interrupt register storage regy: in 25 [16] return - exit interrupt(HARDWARE_CLOBBER)
Removing interrupt register storage ldy #00 in 25 [16] return - exit interrupt(HARDWARE_CLOBBER)
ASSEMBLER BEFORE OPTIMIZATION
// File Comments
// A minimal working raster hardware IRQ with clobber-based register savings
// Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
// Global Constants & labels
// Value that disables all CIA interrupts when stored to the CIA Interrupt registers
.const CIA_INTERRUPT_CLEAR = $7f
// Bits for the VICII IRQ Status/Enable Registers
.const IRQ_RASTER = 1
// Mask for PROCESSOR_PORT_DDR which allows only memory configuration to be written
.const PROCPORT_DDR_MEMORY_MASK = 7
// RAM in 0xA000, 0xE000 I/O in 0xD000
.const PROCPORT_RAM_IO = 5
// The colors of the C64
.const BLACK = 0
.const WHITE = 1
.const OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
.label RASTER = $d012
.label BORDER_COLOR = $d020
.label BG_COLOR = $d021
.label VIC_CONTROL = $d011
// VIC II IRQ Status Register
.label IRQ_STATUS = $d019
// VIC II IRQ Enable Register
.label IRQ_ENABLE = $d01a
// Processor port data direction register
.label PROCPORT_DDR = 0
// Processor Port Register controlling RAM/ROM configuration and the datasette
.label PROCPORT = 1
// The CIA#1: keyboard matrix, joystick #1/#2
.label CIA1 = $dc00
// The vector used when the HARDWARE serves IRQ interrupts
.label HARDWARE_IRQ = $fffe
// @begin
__bbegin:
// [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
jmp __b1
// @1
__b1:
// [2] call main
jsr main
// [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
jmp __bend
// @end
__bend:
// main
main: {
// asm { sei }
sei
// [5] *((const nomodify byte*) PROCPORT_DDR) ← (const nomodify byte) PROCPORT_DDR_MEMORY_MASK -- _deref_pbuc1=vbuc2
// Disable kernal & basic
lda #PROCPORT_DDR_MEMORY_MASK
sta PROCPORT_DDR
// [6] *((const nomodify byte*) PROCPORT) ← (const nomodify byte) PROCPORT_RAM_IO -- _deref_pbuc1=vbuc2
lda #PROCPORT_RAM_IO
sta PROCPORT
// [7] *((byte*)(const nomodify struct MOS6526_CIA*) CIA1+(const byte) OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) ← (const nomodify byte) CIA_INTERRUPT_CLEAR -- _deref_pbuc1=vbuc2
// Disable CIA 1 Timer IRQ
lda #CIA_INTERRUPT_CLEAR
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT
// [8] *((const nomodify byte*) VIC_CONTROL) ← *((const nomodify byte*) VIC_CONTROL) | (byte) $80 -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2
// Set raster line to $100
lda #$80
ora VIC_CONTROL
sta VIC_CONTROL
// [9] *((const nomodify byte*) RASTER) ← (byte) 0 -- _deref_pbuc1=vbuc2
lda #0
sta RASTER
// [10] *((const nomodify byte*) IRQ_ENABLE) ← (const nomodify byte) IRQ_RASTER -- _deref_pbuc1=vbuc2
// Enable Raster Interrupt
lda #IRQ_RASTER
sta IRQ_ENABLE
// [11] *((const nomodify void()**) HARDWARE_IRQ) ← &interrupt(HARDWARE_CLOBBER)(void()) irq() -- _deref_pptc1=pprc2
// Set the IRQ routine
lda #<irq
sta HARDWARE_IRQ
lda #>irq
sta HARDWARE_IRQ+1
// asm { cli }
cli
jmp __b1
// main::@1
__b1:
// [13] *((const nomodify byte*) BORDER_COLOR) ← ++ *((const nomodify byte*) BORDER_COLOR) -- _deref_pbuc1=_inc__deref_pbuc1
inc BORDER_COLOR
jmp __b1
}
// irq
// Interrupt Routine
irq: {
// entry interrupt(HARDWARE_CLOBBER)
sta rega+1
// [15] call do_irq
jsr do_irq
jmp __breturn
// irq::@return
__breturn:
// [16] return - exit interrupt(HARDWARE_CLOBBER)
rega:
lda #00
rti
}
// do_irq
do_irq: {
// [17] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) WHITE -- _deref_pbuc1=vbuc2
lda #WHITE
sta BG_COLOR
// [18] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) BLACK -- _deref_pbuc1=vbuc2
lda #BLACK
sta BG_COLOR
// [19] *((const nomodify byte*) IRQ_STATUS) ← (const nomodify byte) IRQ_RASTER -- _deref_pbuc1=vbuc2
// Acknowledge the IRQ
lda #IRQ_RASTER
sta IRQ_STATUS
jmp __breturn
// do_irq::@return
__breturn:
// [20] 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 __breturn
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction __b1_from___bbegin:
Removing instruction __b1:
Removing instruction __bend_from___b1:
Removing instruction __breturn:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction __bbegin:
Removing instruction __bend:
Removing instruction __breturn:
Succesful ASM optimization Pass5UnusedLabelElimination
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(const nomodify byte*) BG_COLOR = (byte*) 53281
(const nomodify byte) BLACK = (byte) 0
(const nomodify byte*) BORDER_COLOR = (byte*) 53280
(const nomodify struct MOS6526_CIA*) CIA1 = (struct MOS6526_CIA*) 56320
(const nomodify byte) CIA_INTERRUPT_CLEAR = (byte) $7f
(const nomodify void()**) HARDWARE_IRQ = (void()**) 65534
(const nomodify byte*) IRQ_ENABLE = (byte*) 53274
(const nomodify byte) IRQ_RASTER = (byte) 1
(const nomodify byte*) IRQ_STATUS = (byte*) 53273
(byte) MOS6526_CIA::INTERRUPT
(byte) MOS6526_CIA::PORT_A
(byte) MOS6526_CIA::PORT_A_DDR
(byte) MOS6526_CIA::PORT_B
(byte) MOS6526_CIA::PORT_B_DDR
(byte) MOS6526_CIA::SERIAL_DATA
(word) MOS6526_CIA::TIMER_A
(byte) MOS6526_CIA::TIMER_A_CONTROL
(word) MOS6526_CIA::TIMER_B
(byte) MOS6526_CIA::TIMER_B_CONTROL
(byte) MOS6526_CIA::TOD_10THS
(byte) MOS6526_CIA::TOD_HOURS
(byte) MOS6526_CIA::TOD_MIN
(byte) MOS6526_CIA::TOD_SEC
(byte) MOS6569_VICII::BG_COLOR
(byte) MOS6569_VICII::BG_COLOR1
(byte) MOS6569_VICII::BG_COLOR2
(byte) MOS6569_VICII::BG_COLOR3
(byte) MOS6569_VICII::BORDER_COLOR
(byte) MOS6569_VICII::CONTROL1
(byte) MOS6569_VICII::CONTROL2
(byte) MOS6569_VICII::IRQ_ENABLE
(byte) MOS6569_VICII::IRQ_STATUS
(byte) MOS6569_VICII::LIGHTPEN_X
(byte) MOS6569_VICII::LIGHTPEN_Y
(byte) MOS6569_VICII::MEMORY
(byte) MOS6569_VICII::RASTER
(byte) MOS6569_VICII::SPRITE0_COLOR
(byte) MOS6569_VICII::SPRITE0_X
(byte) MOS6569_VICII::SPRITE0_Y
(byte) MOS6569_VICII::SPRITE1_COLOR
(byte) MOS6569_VICII::SPRITE1_X
(byte) MOS6569_VICII::SPRITE1_Y
(byte) MOS6569_VICII::SPRITE2_COLOR
(byte) MOS6569_VICII::SPRITE2_X
(byte) MOS6569_VICII::SPRITE2_Y
(byte) MOS6569_VICII::SPRITE3_COLOR
(byte) MOS6569_VICII::SPRITE3_X
(byte) MOS6569_VICII::SPRITE3_Y
(byte) MOS6569_VICII::SPRITE4_COLOR
(byte) MOS6569_VICII::SPRITE4_X
(byte) MOS6569_VICII::SPRITE4_Y
(byte) MOS6569_VICII::SPRITE5_COLOR
(byte) MOS6569_VICII::SPRITE5_X
(byte) MOS6569_VICII::SPRITE5_Y
(byte) MOS6569_VICII::SPRITE6_COLOR
(byte) MOS6569_VICII::SPRITE6_X
(byte) MOS6569_VICII::SPRITE6_Y
(byte) MOS6569_VICII::SPRITE7_COLOR
(byte) MOS6569_VICII::SPRITE7_X
(byte) MOS6569_VICII::SPRITE7_Y
(byte) MOS6569_VICII::SPRITES_BG_COLLISION
(byte) MOS6569_VICII::SPRITES_COLLISION
(byte) MOS6569_VICII::SPRITES_ENABLE
(byte) MOS6569_VICII::SPRITES_EXPAND_X
(byte) MOS6569_VICII::SPRITES_EXPAND_Y
(byte) MOS6569_VICII::SPRITES_MC
(byte) MOS6569_VICII::SPRITES_MCOLOR1
(byte) MOS6569_VICII::SPRITES_MCOLOR2
(byte) MOS6569_VICII::SPRITES_PRIORITY
(byte) MOS6569_VICII::SPRITES_XMSB
(byte) MOS6581_SID::CH1_ATTACK_DECAY
(byte) MOS6581_SID::CH1_CONTROL
(word) MOS6581_SID::CH1_FREQ
(word) MOS6581_SID::CH1_PULSE_WIDTH
(byte) MOS6581_SID::CH1_SUSTAIN_RELEASE
(byte) MOS6581_SID::CH2_ATTACK_DECAY
(byte) MOS6581_SID::CH2_CONTROL
(word) MOS6581_SID::CH2_FREQ
(word) MOS6581_SID::CH2_PULSE_WIDTH
(byte) MOS6581_SID::CH2_SUSTAIN_RELEASE
(byte) MOS6581_SID::CH3_ATTACK_DECAY
(byte) MOS6581_SID::CH3_CONTROL
(byte) MOS6581_SID::CH3_ENV
(word) MOS6581_SID::CH3_FREQ
(byte) MOS6581_SID::CH3_OSC
(word) MOS6581_SID::CH3_PULSE_WIDTH
(byte) MOS6581_SID::CH3_SUSTAIN_RELEASE
(byte) MOS6581_SID::FILTER_CUTOFF_HIGH
(byte) MOS6581_SID::FILTER_CUTOFF_LOW
(byte) MOS6581_SID::FILTER_SETUP
(byte) MOS6581_SID::POT_X
(byte) MOS6581_SID::POT_Y
(byte) MOS6581_SID::VOLUME_FILTER_MODE
(const byte) OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = (byte) $d
(const nomodify byte*) PROCPORT = (byte*) 1
(const nomodify byte*) PROCPORT_DDR = (byte*) 0
(const nomodify byte) PROCPORT_DDR_MEMORY_MASK = (byte) 7
(const nomodify byte) PROCPORT_RAM_IO = (byte) 5
(const nomodify byte*) RASTER = (byte*) 53266
(const nomodify byte*) VIC_CONTROL = (byte*) 53265
(const nomodify byte) WHITE = (byte) 1
(void()) do_irq()
(label) do_irq::@return
interrupt(HARDWARE_CLOBBER)(void()) irq()
(label) irq::@return
(void()) main()
(label) main::@1
FINAL ASSEMBLER
Score: 224
// File Comments
// A minimal working raster hardware IRQ with clobber-based register savings
// Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
// Global Constants & labels
// Value that disables all CIA interrupts when stored to the CIA Interrupt registers
.const CIA_INTERRUPT_CLEAR = $7f
// Bits for the VICII IRQ Status/Enable Registers
.const IRQ_RASTER = 1
// Mask for PROCESSOR_PORT_DDR which allows only memory configuration to be written
.const PROCPORT_DDR_MEMORY_MASK = 7
// RAM in 0xA000, 0xE000 I/O in 0xD000
.const PROCPORT_RAM_IO = 5
// The colors of the C64
.const BLACK = 0
.const WHITE = 1
.const OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
.label RASTER = $d012
.label BORDER_COLOR = $d020
.label BG_COLOR = $d021
.label VIC_CONTROL = $d011
// VIC II IRQ Status Register
.label IRQ_STATUS = $d019
// VIC II IRQ Enable Register
.label IRQ_ENABLE = $d01a
// Processor port data direction register
.label PROCPORT_DDR = 0
// Processor Port Register controlling RAM/ROM configuration and the datasette
.label PROCPORT = 1
// The CIA#1: keyboard matrix, joystick #1/#2
.label CIA1 = $dc00
// The vector used when the HARDWARE serves IRQ interrupts
.label HARDWARE_IRQ = $fffe
// @begin
// [1] phi from @begin to @1 [phi:@begin->@1]
// @1
// [2] call main
// [3] phi from @1 to @end [phi:@1->@end]
// @end
// main
main: {
// asm
// asm { sei }
sei
// *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK
// [5] *((const nomodify byte*) PROCPORT_DDR) ← (const nomodify byte) PROCPORT_DDR_MEMORY_MASK -- _deref_pbuc1=vbuc2
// Disable kernal & basic
lda #PROCPORT_DDR_MEMORY_MASK
sta PROCPORT_DDR
// *PROCPORT = PROCPORT_RAM_IO
// [6] *((const nomodify byte*) PROCPORT) ← (const nomodify byte) PROCPORT_RAM_IO -- _deref_pbuc1=vbuc2
lda #PROCPORT_RAM_IO
sta PROCPORT
// CIA1->INTERRUPT = CIA_INTERRUPT_CLEAR
// [7] *((byte*)(const nomodify struct MOS6526_CIA*) CIA1+(const byte) OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) ← (const nomodify byte) CIA_INTERRUPT_CLEAR -- _deref_pbuc1=vbuc2
// Disable CIA 1 Timer IRQ
lda #CIA_INTERRUPT_CLEAR
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT
// *VIC_CONTROL |=$80
// [8] *((const nomodify byte*) VIC_CONTROL) ← *((const nomodify byte*) VIC_CONTROL) | (byte) $80 -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2
// Set raster line to $100
lda #$80
ora VIC_CONTROL
sta VIC_CONTROL
// *RASTER = $00
// [9] *((const nomodify byte*) RASTER) ← (byte) 0 -- _deref_pbuc1=vbuc2
lda #0
sta RASTER
// *IRQ_ENABLE = IRQ_RASTER
// [10] *((const nomodify byte*) IRQ_ENABLE) ← (const nomodify byte) IRQ_RASTER -- _deref_pbuc1=vbuc2
// Enable Raster Interrupt
lda #IRQ_RASTER
sta IRQ_ENABLE
// *HARDWARE_IRQ = &irq
// [11] *((const nomodify void()**) HARDWARE_IRQ) ← &interrupt(HARDWARE_CLOBBER)(void()) irq() -- _deref_pptc1=pprc2
// Set the IRQ routine
lda #<irq
sta HARDWARE_IRQ
lda #>irq
sta HARDWARE_IRQ+1
// asm
// asm { cli }
cli
// main::@1
__b1:
// (*BORDER_COLOR)++;
// [13] *((const nomodify byte*) BORDER_COLOR) ← ++ *((const nomodify byte*) BORDER_COLOR) -- _deref_pbuc1=_inc__deref_pbuc1
inc BORDER_COLOR
jmp __b1
}
// irq
// Interrupt Routine
irq: {
// entry interrupt(HARDWARE_CLOBBER)
sta rega+1
// do_irq()
// [15] call do_irq
jsr do_irq
// irq::@return
// }
// [16] return - exit interrupt(HARDWARE_CLOBBER)
rega:
lda #00
rti
}
// do_irq
do_irq: {
// *BG_COLOR = WHITE
// [17] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) WHITE -- _deref_pbuc1=vbuc2
lda #WHITE
sta BG_COLOR
// *BG_COLOR = BLACK
// [18] *((const nomodify byte*) BG_COLOR) ← (const nomodify byte) BLACK -- _deref_pbuc1=vbuc2
lda #BLACK
sta BG_COLOR
// *IRQ_STATUS = IRQ_RASTER
// [19] *((const nomodify byte*) IRQ_STATUS) ← (const nomodify byte) IRQ_RASTER -- _deref_pbuc1=vbuc2
// Acknowledge the IRQ
lda #IRQ_RASTER
sta IRQ_STATUS
// do_irq::@return
// }
// [20] return
rts
}
// File Data
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