mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-12-24 04:31:02 +00:00
Implemented constant pointer detection - allowing for efficient NULL-code using const byte* NULL = $00. Closes #79
This commit is contained in:
jespergravgaard
parent
43395567af
commit
c8edee4291
10
src/test/java/dk/camelot64/kickc/test/ref/const-pointer.asm
Normal file
10
src/test/java/dk/camelot64/kickc/test/ref/const-pointer.asm
Normal file
@ -0,0 +1,10 @@
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
jsr main
|
||||
main: {
|
||||
.label screen = $400
|
||||
lda #'*'
|
||||
sta screen+0
|
||||
rts
|
||||
}
|
||||
18
src/test/java/dk/camelot64/kickc/test/ref/const-pointer.cfg
Normal file
18
src/test/java/dk/camelot64/kickc/test/ref/const-pointer.cfg
Normal file
@ -0,0 +1,18 @@
|
||||
@begin: scope:[] from
|
||||
[0] phi() [ ] ( )
|
||||
to:@1
|
||||
@1: scope:[] from @begin
|
||||
[1] phi() [ ] ( )
|
||||
[2] call main param-assignment [ ] ( )
|
||||
to:@end
|
||||
@end: scope:[] from @1
|
||||
[3] phi() [ ] ( )
|
||||
main: scope:[main] from @1
|
||||
[4] phi() [ ] ( main:2 [ ] )
|
||||
to:main::@1
|
||||
main::@1: scope:[main] from main
|
||||
[5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '*' [ ] ( main:2 [ ] )
|
||||
to:main::@return
|
||||
main::@return: scope:[main] from main::@1
|
||||
[6] return [ ] ( main:2 [ ] )
|
||||
to:@return
|
||||
343
src/test/java/dk/camelot64/kickc/test/ref/const-pointer.log
Normal file
343
src/test/java/dk/camelot64/kickc/test/ref/const-pointer.log
Normal file
@ -0,0 +1,343 @@
|
||||
PARSING src/test/java/dk/camelot64/kickc/test/kc/const-pointer.kc
|
||||
//Test that constant pointers are detected correctly
|
||||
|
||||
void main() {
|
||||
byte* screen = $400;
|
||||
byte* NULL = $0;
|
||||
byte* rem = $ff;
|
||||
|
||||
if(rem!=NULL) {
|
||||
screen[0] = '*';
|
||||
} else {
|
||||
screen[0] = '.';
|
||||
}
|
||||
}
|
||||
SYMBOLS
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(void()) main()
|
||||
(boolean~) main::$0
|
||||
(label) main::@1
|
||||
(label) main::@2
|
||||
(label) main::@3
|
||||
(label) main::@4
|
||||
(label) main::@return
|
||||
(byte*) main::NULL
|
||||
(byte*) main::rem
|
||||
(byte*) main::screen
|
||||
|
||||
Promoting word/signed word/dword/signed dword to byte* in main::screen ← ((byte*)) 1024
|
||||
Promoting byte/signed byte/word/signed word/dword/signed dword to byte* in main::NULL ← ((byte*)) 0
|
||||
Promoting byte/word/signed word/dword/signed dword to byte* in main::rem ← ((byte*)) 255
|
||||
INITIAL CONTROL FLOW GRAPH
|
||||
@begin: scope:[] from
|
||||
to:@1
|
||||
main: scope:[main] from
|
||||
(byte*) main::screen ← ((byte*)) (word/signed word/dword/signed dword) 1024
|
||||
(byte*) main::NULL ← ((byte*)) (byte/signed byte/word/signed word/dword/signed dword) 0
|
||||
(byte*) main::rem ← ((byte*)) (byte/word/signed word/dword/signed dword) 255
|
||||
(boolean~) main::$0 ← (byte*) main::rem != (byte*) main::NULL
|
||||
if((boolean~) main::$0) goto main::@1
|
||||
to:main::@3
|
||||
main::@1: scope:[main] from main main::@4
|
||||
*((byte*) main::screen + (byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '*'
|
||||
to:main::@2
|
||||
main::@3: scope:[main] from main
|
||||
*((byte*) main::screen + (byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '.'
|
||||
to:main::@2
|
||||
main::@2: scope:[main] from main::@1 main::@3
|
||||
to:main::@return
|
||||
main::@4: scope:[main] from
|
||||
to:main::@1
|
||||
main::@return: scope:[main] from main::@2
|
||||
return
|
||||
to:@return
|
||||
@1: scope:[] from @begin
|
||||
call main
|
||||
to:@end
|
||||
@end: scope:[] from @1
|
||||
|
||||
Removing empty block main::@2
|
||||
Removing empty block main::@4
|
||||
PROCEDURE MODIFY VARIABLE ANALYSIS
|
||||
|
||||
Completing Phi functions...
|
||||
|
||||
CONTROL FLOW GRAPH SSA WITH ASSIGNMENT CALL & RETURN
|
||||
@begin: scope:[] from
|
||||
to:@1
|
||||
main: scope:[main] from @1
|
||||
(byte*) main::screen#0 ← ((byte*)) (word/signed word/dword/signed dword) 1024
|
||||
(byte*) main::NULL#0 ← ((byte*)) (byte/signed byte/word/signed word/dword/signed dword) 0
|
||||
(byte*) main::rem#0 ← ((byte*)) (byte/word/signed word/dword/signed dword) 255
|
||||
(boolean~) main::$0 ← (byte*) main::rem#0 != (byte*) main::NULL#0
|
||||
if((boolean~) main::$0) goto main::@1
|
||||
to:main::@3
|
||||
main::@1: scope:[main] from main
|
||||
(byte*) main::screen#1 ← phi( main/(byte*) main::screen#0 )
|
||||
*((byte*) main::screen#1 + (byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '*'
|
||||
to:main::@return
|
||||
main::@3: scope:[main] from main
|
||||
(byte*) main::screen#2 ← phi( main/(byte*) main::screen#0 )
|
||||
*((byte*) main::screen#2 + (byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '.'
|
||||
to:main::@return
|
||||
main::@return: scope:[main] from main::@1 main::@3
|
||||
return
|
||||
to:@return
|
||||
@1: scope:[] from @begin
|
||||
call main param-assignment
|
||||
to:@2
|
||||
@2: scope:[] from @1
|
||||
to:@end
|
||||
@end: scope:[] from @2
|
||||
|
||||
SYMBOL TABLE SSA
|
||||
(label) @1
|
||||
(label) @2
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(void()) main()
|
||||
(boolean~) main::$0
|
||||
(label) main::@1
|
||||
(label) main::@3
|
||||
(label) main::@return
|
||||
(byte*) main::NULL
|
||||
(byte*) main::NULL#0
|
||||
(byte*) main::rem
|
||||
(byte*) main::rem#0
|
||||
(byte*) main::screen
|
||||
(byte*) main::screen#0
|
||||
(byte*) main::screen#1
|
||||
(byte*) main::screen#2
|
||||
|
||||
OPTIMIZING CONTROL FLOW GRAPH
|
||||
Culled Empty Block (label) @2
|
||||
Succesful SSA optimization Pass2CullEmptyBlocks
|
||||
Alias (byte*) main::screen#0 = (byte*) main::screen#1 (byte*) main::screen#2
|
||||
Succesful SSA optimization Pass2AliasElimination
|
||||
Simple Condition (boolean~) main::$0 if((byte*) main::rem#0!=(byte*) main::NULL#0) goto main::@1
|
||||
Succesful SSA optimization Pass2ConditionalJumpSimplification
|
||||
Constant (const byte*) main::screen#0 = ((byte*))1024
|
||||
Constant (const byte*) main::NULL#0 = ((byte*))0
|
||||
Constant (const byte*) main::rem#0 = ((byte*))255
|
||||
Succesful SSA optimization Pass2ConstantIdentification
|
||||
Consolidated array index constant in *(main::screen#0+0)
|
||||
Consolidated array index constant in *(main::screen#0+0)
|
||||
Succesful SSA optimization Pass2ConstantAdditionElimination
|
||||
if() condition always true - replacing block destination if((const byte*) main::rem#0!=(const byte*) main::NULL#0) goto main::@1
|
||||
Succesful SSA optimization Pass2ConstantIfs
|
||||
Eliminating unused constant (const byte*) main::NULL#0
|
||||
Eliminating unused constant (const byte*) main::rem#0
|
||||
Succesful SSA optimization PassNEliminateUnusedVars
|
||||
Removing unused block main::@3
|
||||
Succesful SSA optimization Pass2EliminateUnusedBlocks
|
||||
OPTIMIZING CONTROL FLOW GRAPH
|
||||
Block Sequence Planned @begin @1 @end main main::@1 main::@return
|
||||
Block Sequence Planned @begin @1 @end main main::@1 main::@return
|
||||
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 main
|
||||
CALL GRAPH
|
||||
Calls in [] to main:2
|
||||
|
||||
Propagating live ranges...
|
||||
Created 0 initial phi equivalence classes
|
||||
Coalesced down to 0 phi equivalence classes
|
||||
Block Sequence Planned @begin @1 @end main main::@1 main::@return
|
||||
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 main
|
||||
Propagating live ranges...
|
||||
|
||||
FINAL CONTROL FLOW GRAPH
|
||||
@begin: scope:[] from
|
||||
[0] phi() [ ] ( )
|
||||
to:@1
|
||||
@1: scope:[] from @begin
|
||||
[1] phi() [ ] ( )
|
||||
[2] call main param-assignment [ ] ( )
|
||||
to:@end
|
||||
@end: scope:[] from @1
|
||||
[3] phi() [ ] ( )
|
||||
main: scope:[main] from @1
|
||||
[4] phi() [ ] ( main:2 [ ] )
|
||||
to:main::@1
|
||||
main::@1: scope:[main] from main
|
||||
[5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '*' [ ] ( main:2 [ ] )
|
||||
to:main::@return
|
||||
main::@return: scope:[main] from main::@1
|
||||
[6] return [ ] ( main:2 [ ] )
|
||||
to:@return
|
||||
|
||||
DOMINATORS
|
||||
@begin dominated by @begin
|
||||
@1 dominated by @1 @begin
|
||||
@end dominated by @1 @begin @end
|
||||
main dominated by @1 @begin main
|
||||
main::@1 dominated by @1 @begin main::@1 main
|
||||
main::@return dominated by main::@return @1 @begin main::@1 main
|
||||
|
||||
NATURAL LOOPS
|
||||
|
||||
NATURAL LOOPS WITH DEPTH
|
||||
Found 0 loops in scope []
|
||||
Found 0 loops in scope [main]
|
||||
|
||||
|
||||
VARIABLE REGISTER WEIGHTS
|
||||
(void()) main()
|
||||
(byte*) main::NULL
|
||||
(byte*) main::rem
|
||||
(byte*) main::screen
|
||||
|
||||
Initial phi equivalence classes
|
||||
Complete equivalence classes
|
||||
|
||||
INITIAL ASM
|
||||
//SEG0 Basic Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
//SEG1 Global Constants & labels
|
||||
//SEG2 @begin
|
||||
bbegin:
|
||||
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
b1_from_bbegin:
|
||||
jmp b1
|
||||
//SEG4 @1
|
||||
b1:
|
||||
//SEG5 [2] call main param-assignment [ ] ( )
|
||||
//SEG6 [4] phi from @1 to main [phi:@1->main]
|
||||
main_from_b1:
|
||||
jsr main
|
||||
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
|
||||
bend_from_b1:
|
||||
jmp bend
|
||||
//SEG8 @end
|
||||
bend:
|
||||
//SEG9 main
|
||||
main: {
|
||||
.label screen = $400
|
||||
jmp b1
|
||||
//SEG10 main::@1
|
||||
b1:
|
||||
//SEG11 [5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '*' [ ] ( main:2 [ ] ) -- _deref_pbuc1=vbuc2
|
||||
lda #'*'
|
||||
sta screen+0
|
||||
jmp breturn
|
||||
//SEG12 main::@return
|
||||
breturn:
|
||||
//SEG13 [6] return [ ] ( main:2 [ ] )
|
||||
rts
|
||||
}
|
||||
|
||||
REGISTER UPLIFT POTENTIAL REGISTERS
|
||||
Statement [5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '*' [ ] ( main:2 [ ] ) always clobbers reg byte a
|
||||
|
||||
REGISTER UPLIFT SCOPES
|
||||
Uplift Scope [main]
|
||||
Uplift Scope []
|
||||
|
||||
Uplifting [main] best 57 combination
|
||||
Uplifting [] best 57 combination
|
||||
|
||||
ASSEMBLER BEFORE OPTIMIZATION
|
||||
//SEG0 Basic Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
//SEG1 Global Constants & labels
|
||||
//SEG2 @begin
|
||||
bbegin:
|
||||
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
b1_from_bbegin:
|
||||
jmp b1
|
||||
//SEG4 @1
|
||||
b1:
|
||||
//SEG5 [2] call main param-assignment [ ] ( )
|
||||
//SEG6 [4] phi from @1 to main [phi:@1->main]
|
||||
main_from_b1:
|
||||
jsr main
|
||||
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
|
||||
bend_from_b1:
|
||||
jmp bend
|
||||
//SEG8 @end
|
||||
bend:
|
||||
//SEG9 main
|
||||
main: {
|
||||
.label screen = $400
|
||||
jmp b1
|
||||
//SEG10 main::@1
|
||||
b1:
|
||||
//SEG11 [5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '*' [ ] ( main:2 [ ] ) -- _deref_pbuc1=vbuc2
|
||||
lda #'*'
|
||||
sta screen+0
|
||||
jmp breturn
|
||||
//SEG12 main::@return
|
||||
breturn:
|
||||
//SEG13 [6] return [ ] ( main:2 [ ] )
|
||||
rts
|
||||
}
|
||||
|
||||
ASSEMBLER OPTIMIZATIONS
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp bend
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp breturn
|
||||
Succesful ASM optimization Pass5NextJumpElimination
|
||||
Removing instruction bbegin:
|
||||
Removing instruction b1_from_bbegin:
|
||||
Removing instruction main_from_b1:
|
||||
Removing instruction bend_from_b1:
|
||||
Succesful ASM optimization Pass5RedundantLabelElimination
|
||||
Removing instruction b1:
|
||||
Removing instruction bend:
|
||||
Removing instruction b1:
|
||||
Removing instruction breturn:
|
||||
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||
|
||||
FINAL SYMBOL TABLE
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(void()) main()
|
||||
(label) main::@1
|
||||
(label) main::@return
|
||||
(byte*) main::NULL
|
||||
(byte*) main::rem
|
||||
(byte*) main::screen
|
||||
(const byte*) main::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024
|
||||
|
||||
|
||||
|
||||
FINAL ASSEMBLER
|
||||
Score: 18
|
||||
|
||||
//SEG0 Basic Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
//SEG1 Global Constants & labels
|
||||
//SEG2 @begin
|
||||
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
//SEG4 @1
|
||||
//SEG5 [2] call main param-assignment [ ] ( )
|
||||
//SEG6 [4] phi from @1 to main [phi:@1->main]
|
||||
jsr main
|
||||
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
|
||||
//SEG8 @end
|
||||
//SEG9 main
|
||||
main: {
|
||||
.label screen = $400
|
||||
//SEG10 main::@1
|
||||
//SEG11 [5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 0) ← (byte) '*' [ ] ( main:2 [ ] ) -- _deref_pbuc1=vbuc2
|
||||
lda #'*'
|
||||
sta screen+0
|
||||
//SEG12 main::@return
|
||||
//SEG13 [6] return [ ] ( main:2 [ ] )
|
||||
rts
|
||||
}
|
||||
|
||||
11
src/test/java/dk/camelot64/kickc/test/ref/const-pointer.sym
Normal file
11
src/test/java/dk/camelot64/kickc/test/ref/const-pointer.sym
Normal file
@ -0,0 +1,11 @@
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(void()) main()
|
||||
(label) main::@1
|
||||
(label) main::@return
|
||||
(byte*) main::NULL
|
||||
(byte*) main::rem
|
||||
(byte*) main::screen
|
||||
(const byte*) main::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024
|
||||
|
||||
Loading…
Reference in New Issue
Block a user