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Added missing error location for illegal lvalues. Closes #143

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This commit is contained in:
jespergravgaard 2019-03-08 06:33:59 +01:00
parent 0aebd2a9a1
commit 39e727711a
13 changed files with 365 additions and 18 deletions
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3
src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java
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@ -765,6 +765,9 @@ public class Pass0GenerateStatementSequence extends KickCBaseVisitor<Object> {
@Override
public Object visitExprAssignment(KickCParser.ExprAssignmentContext ctx) {
Object val = visit(ctx.expr(0));
if(!(val instanceof LValue)) {
throw new CompileError("Error! Illegal assignment Lvalue " + val.toString(), new StatementSource(ctx));
}
LValue lValue = (LValue) val;
if(lValue instanceof VariableRef && ((VariableRef) lValue).isIntermediate()) {
// Encountered an intermediate variable. This must be turned into a proper LValue later. Put it into a marker to signify that

15
src/test/java/dk/camelot64/kickc/test/TestPrograms.java
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@ -44,6 +44,16 @@ public class TestPrograms {
AsmFragmentTemplateUsages.logUsages(log, false, false, false, false, false, false);
}
@Test
public void testUseUninitialized() throws IOException, URISyntaxException {
compileAndCompare("useuninitialized");
}
@Test
public void testIllegalLValue2() throws IOException, URISyntaxException {
assertError("illegallvalue2", "Illegal assignment Lvalue");
}
@Test
public void testWordFragment1() throws IOException, URISyntaxException {
compileAndCompare("wfragment1");
@ -1086,11 +1096,6 @@ public class TestPrograms {
assertError("assignundeclared", "Unknown variable");
}
@Test
public void testUseUninitialized() throws IOException, URISyntaxException {
assertError("useuninitialized", "Variable used before being defined");
}
@Test
public void testUseUninitialized2() throws IOException, URISyntaxException {
assertError("useuninitialized2", "Variable used before being defined");

6
src/test/kc/illegallvalue2.kc Normal file
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@ -0,0 +1,6 @@
// Syntax error without line number
void main() {
$d020 = 0;
}

4
src/test/kc/useuninitialized.kc
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@ -1,5 +1,5 @@
// Use an uninitialized variable - should fail gracefully!
// Currently it gets into the optimization phase, where the optimization runs into problems understanding the assignment/usage-graph and ends up failing on an exception
// Use an uninitialized variable - should use the default value (0)!
byte b;
byte s;
byte w=2;

2
src/test/ref/bool-function.asm
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@ -8,7 +8,7 @@ main: {
b1:
txa
and #1
cmp #0
eor #0
beq !+
lda #1
!:

6
src/test/ref/bool-function.log
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@ -302,7 +302,7 @@ main: {
sta _0
//SEG17 [7] (bool) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 -- vboz1=vbuz2_eq_vbuc1
lda _0
cmp #0
eor #0
beq !+
lda #1
!:
@ -468,7 +468,7 @@ main: {
txa
and #1
//SEG17 [7] (bool) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 -- vboz1=vbuaa_eq_vbuc1
cmp #0
eor #0
beq !+
lda #1
!:
@ -638,7 +638,7 @@ main: {
txa
and #1
//SEG17 [7] (bool) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 -- vboz1=vbuaa_eq_vbuc1
cmp #0
eor #0
beq !+
lda #1
!:

2
src/test/ref/bool-vars.asm
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@ -22,7 +22,7 @@ bool_complex: {
sta o1
txa
and #1
cmp #0
eor #0
beq !+
lda #1
!:

6
src/test/ref/bool-vars.log
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@ -712,7 +712,7 @@ bool_complex: {
sta _1
//SEG35 [17] (bool) bool_complex::o2#0 ← (byte~) bool_complex::$1 == (byte/signed byte/word/signed word/dword/signed dword) 0 -- vboz1=vbuz2_eq_vbuc1
lda _1
cmp #0
eor #0
beq !+
lda #1
!:
@ -1116,7 +1116,7 @@ bool_complex: {
txa
and #1
//SEG35 [17] (bool) bool_complex::o2#0 ← (byte~) bool_complex::$1 == (byte/signed byte/word/signed word/dword/signed dword) 0 -- vboz1=vbuaa_eq_vbuc1
cmp #0
eor #0
beq !+
lda #1
!:
@ -1563,7 +1563,7 @@ bool_complex: {
txa
and #1
//SEG35 [17] (bool) bool_complex::o2#0 ← (byte~) bool_complex::$1 == (byte/signed byte/word/signed word/dword/signed dword) 0 -- vboz1=vbuaa_eq_vbuc1
cmp #0
eor #0
beq !+
lda #1
!:

6
src/test/ref/travis1.log
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@ -952,11 +952,11 @@ game_ready: {
dec action_count
//SEG83 [38] (bool) game_ready::return#1 ← (byte) action_count#11 == (byte/signed byte/word/signed word/dword/signed dword) 0 -- vboz1=vbuz2_eq_vbuc1
lda action_count
lda #1
cmp #0
eor #0
beq !+
lda #0
lda #1
!:
eor #1
sta return_1
jmp breturn
//SEG84 game_ready::@return

13
src/test/ref/useuninitialized.asm Normal file
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@ -0,0 +1,13 @@
// Use an uninitialized variable - should use the default value (0)!
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
.const s = 1
main: {
.label screen = $400
lda #3
sta screen
lda #s
sta screen+1
rts
}

16
src/test/ref/useuninitialized.cfg Normal file
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@ -0,0 +1,16 @@
@begin: scope:[] from
[0] phi()
to:@1
@1: scope:[] from @begin
[1] phi()
[2] call main
to:@end
@end: scope:[] from @1
[3] phi()
main: scope:[main] from @1
[4] *((const byte*) main::screen#0) ← (byte/signed byte/word/signed word/dword/signed dword) 3
[5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 1) ← (const byte) s#1
to:main::@return
main::@return: scope:[main] from main
[6] return
to:@return

292
src/test/ref/useuninitialized.log Normal file
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@ -0,0 +1,292 @@
CONTROL FLOW GRAPH SSA
@begin: scope:[] from
(byte) b#0 ← (byte/signed byte/word/signed word/dword/signed dword) 0
(byte) s#0 ← (byte/signed byte/word/signed word/dword/signed dword) 0
(byte) w#0 ← (byte/signed byte/word/signed word/dword/signed dword) 2
to:@1
main: scope:[main] from @1
(byte) b#4 ← phi( @1/(byte) b#7 )
(byte/signed word/word/dword/signed dword~) main::$0 ← (byte) b#4 + (byte/signed byte/word/signed word/dword/signed dword) 1
(byte) s#1 ← (byte/signed word/word/dword/signed dword~) main::$0
(byte) b#1 ← (byte/signed byte/word/signed word/dword/signed dword) 3
(byte*) main::screen#0 ← ((byte*)) (word/signed word/dword/signed dword) 1024
*((byte*) main::screen#0) ← (byte) b#1
(byte*~) main::$1 ← (byte*) main::screen#0 + (byte/signed byte/word/signed word/dword/signed dword) 1
*((byte*~) main::$1) ← (byte) s#1
to:main::@return
main::@return: scope:[main] from main
(byte) b#5 ← phi( main/(byte) b#1 )
(byte) s#4 ← phi( main/(byte) s#1 )
(byte) s#2 ← (byte) s#4
(byte) b#2 ← (byte) b#5
return
to:@return
@1: scope:[] from @begin
(byte) s#6 ← phi( @begin/(byte) s#0 )
(byte) b#7 ← phi( @begin/(byte) b#0 )
call main
to:@2
@2: scope:[] from @1
(byte) b#6 ← phi( @1/(byte) b#2 )
(byte) s#5 ← phi( @1/(byte) s#2 )
(byte) s#3 ← (byte) s#5
(byte) b#3 ← (byte) b#6
to:@end
@end: scope:[] from @2
SYMBOL TABLE SSA
(label) @1
(label) @2
(label) @begin
(label) @end
(byte) b
(byte) b#0
(byte) b#1
(byte) b#2
(byte) b#3
(byte) b#4
(byte) b#5
(byte) b#6
(byte) b#7
(void()) main()
(byte/signed word/word/dword/signed dword~) main::$0
(byte*~) main::$1
(label) main::@return
(byte*) main::screen
(byte*) main::screen#0
(byte) s
(byte) s#0
(byte) s#1
(byte) s#2
(byte) s#3
(byte) s#4
(byte) s#5
(byte) s#6
(byte) w
(byte) w#0
Alias (byte) s#1 = (byte/signed word/word/dword/signed dword~) main::$0 (byte) s#4 (byte) s#2
Alias (byte) b#1 = (byte) b#5 (byte) b#2
Alias (byte) b#0 = (byte) b#7
Alias (byte) s#0 = (byte) s#6
Alias (byte) s#3 = (byte) s#5
Alias (byte) b#3 = (byte) b#6
Successful SSA optimization Pass2AliasElimination
Redundant Phi (byte) b#4 (byte) b#0
Redundant Phi (byte) s#3 (byte) s#1
Redundant Phi (byte) b#3 (byte) b#1
Successful SSA optimization Pass2RedundantPhiElimination
Constant (const byte) b#0 = 0
Constant (const byte) s#0 = 0
Constant (const byte) w#0 = 2
Constant (const byte) b#1 = 3
Constant (const byte*) main::screen#0 = ((byte*))1024
Successful SSA optimization Pass2ConstantIdentification
Constant (const byte) s#1 = b#0+1
Constant (const byte*) main::$1 = main::screen#0+1
Successful SSA optimization Pass2ConstantIdentification
Successful SSA optimization PassNEliminateUnusedVars
Culled Empty Block (label) @2
Successful SSA optimization Pass2CullEmptyBlocks
Inlining constant with different constant siblings (const byte) b#0
Inlining constant with different constant siblings (const byte) b#1
Constant inlined main::$1 = (const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 1
Constant inlined b#1 = (byte/signed byte/word/signed word/dword/signed dword) 3
Constant inlined b#0 = (byte/signed byte/word/signed word/dword/signed dword) 0
Successful SSA optimization Pass2ConstantInlining
Simplifying constant plus zero 0+1
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @end
CALL GRAPH
Calls in [] to main:2
Created 0 initial phi equivalence classes
Coalesced down to 0 phi equivalence classes
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @end
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()
main: scope:[main] from @1
[4] *((const byte*) main::screen#0) ← (byte/signed byte/word/signed word/dword/signed dword) 3
[5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 1) ← (const byte) s#1
to:main::@return
main::@return: scope:[main] from main
[6] return
to:@return
VARIABLE REGISTER WEIGHTS
(byte) b
(void()) main()
(byte*) main::screen
(byte) s
(byte) w
Initial phi equivalence classes
Complete equivalence classes
INITIAL ASM
//SEG0 File Comments
// Use an uninitialized variable - should use the default value (0)!
//SEG1 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
//SEG2 Global Constants & labels
.const s = 1
//SEG3 @begin
bbegin:
//SEG4 [1] phi from @begin to @1 [phi:@begin->@1]
b1_from_bbegin:
jmp b1
//SEG5 @1
b1:
//SEG6 [2] call main
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
//SEG10 [4] *((const byte*) main::screen#0) ← (byte/signed byte/word/signed word/dword/signed dword) 3 -- _deref_pbuc1=vbuc2
lda #3
sta screen
//SEG11 [5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 1) ← (const byte) s#1 -- _deref_pbuc1=vbuc2
lda #s
sta screen+1
jmp breturn
//SEG12 main::@return
breturn:
//SEG13 [6] return
rts
}
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [4] *((const byte*) main::screen#0) ← (byte/signed byte/word/signed word/dword/signed dword) 3 [ ] ( main:2 [ ] ) always clobbers reg byte a
Statement [5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 1) ← (const byte) s#1 [ ] ( main:2 [ ] ) always clobbers reg byte a
REGISTER UPLIFT SCOPES
Uplift Scope [main]
Uplift Scope []
Uplifting [main] best 33 combination
Uplifting [] best 33 combination
ASSEMBLER BEFORE OPTIMIZATION
//SEG0 File Comments
// Use an uninitialized variable - should use the default value (0)!
//SEG1 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
//SEG2 Global Constants & labels
.const s = 1
//SEG3 @begin
bbegin:
//SEG4 [1] phi from @begin to @1 [phi:@begin->@1]
b1_from_bbegin:
jmp b1
//SEG5 @1
b1:
//SEG6 [2] call main
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
//SEG10 [4] *((const byte*) main::screen#0) ← (byte/signed byte/word/signed word/dword/signed dword) 3 -- _deref_pbuc1=vbuc2
lda #3
sta screen
//SEG11 [5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 1) ← (const byte) s#1 -- _deref_pbuc1=vbuc2
lda #s
sta screen+1
jmp breturn
//SEG12 main::@return
breturn:
//SEG13 [6] return
rts
}
ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp breturn
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction b1_from_bbegin:
Removing instruction b1:
Removing instruction bend_from_b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction bend:
Removing instruction breturn:
Succesful ASM optimization Pass5UnusedLabelElimination
Updating BasicUpstart to call main directly
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction bbegin:
Succesful ASM optimization Pass5UnusedLabelElimination
FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(byte) b
(void()) main()
(label) main::@return
(byte*) main::screen
(const byte*) main::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024
(byte) s
(const byte) s#1 s = (byte/signed byte/word/signed word/dword/signed dword) 1
(byte) w
FINAL ASSEMBLER
Score: 18
//SEG0 File Comments
// Use an uninitialized variable - should use the default value (0)!
//SEG1 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
//SEG2 Global Constants & labels
.const s = 1
//SEG3 @begin
//SEG4 [1] phi from @begin to @1 [phi:@begin->@1]
//SEG5 @1
//SEG6 [2] call main
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
//SEG8 @end
//SEG9 main
main: {
.label screen = $400
//SEG10 [4] *((const byte*) main::screen#0) ← (byte/signed byte/word/signed word/dword/signed dword) 3 -- _deref_pbuc1=vbuc2
lda #3
sta screen
//SEG11 [5] *((const byte*) main::screen#0+(byte/signed byte/word/signed word/dword/signed dword) 1) ← (const byte) s#1 -- _deref_pbuc1=vbuc2
lda #s
sta screen+1
//SEG12 main::@return
//SEG13 [6] return
rts
}

12
src/test/ref/useuninitialized.sym Normal file
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@ -0,0 +1,12 @@
(label) @1
(label) @begin
(label) @end
(byte) b
(void()) main()
(label) main::@return
(byte*) main::screen
(const byte*) main::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024
(byte) s
(const byte) s#1 s = (byte/signed byte/word/signed word/dword/signed dword) 1
(byte) w