Fixed switch test

src/test/kc/switch-2.kc

@@ -1,12 +1,11 @@
-// Tests simple switch()-statement - including a continue statement for the enclosing loop
+// Tests simple switch()-statement - not inside a loop
 
 void main() {
     char* SCREEN = 0x0400;
     char b=0;
     char v64 = 0;
     switch(v64){
-        case 0: b = 1; break;
+        case 0: b = 1;
-        default:
     }
     SCREEN[0] = b;
 }

src/test/ref/switch-2.asm

@@ -0,0 +1,11 @@
+// Tests simple switch()-statement - not inside a loop
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+main: {
+    .label SCREEN = $400
+    .const b = 1
+    lda #b
+    sta SCREEN
+    rts
+}

src/test/ref/switch-2.cfg

@@ -0,0 +1,18 @@
+@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] phi()
+  to:main::@1
+main::@1: scope:[main]  from main
+  [5] *((const byte*) main::SCREEN#0) ← (const byte) main::b#1
+  to:main::@return
+main::@return: scope:[main]  from main::@1
+  [6] return 
+  to:@return

src/test/ref/switch-2.log

@@ -0,0 +1,303 @@
+Identified constant variable (byte*) main::SCREEN
+Identified constant variable (byte) main::v64
+Culled Empty Block (label) main::@1
+Culled Empty Block (label) main::@2
+
+CONTROL FLOW GRAPH SSA
+@begin: scope:[]  from
+  to:@1
+main: scope:[main]  from @1
+  (byte*) main::SCREEN#0 ← ((byte*)) (number) $400
+  (byte) main::b#0 ← (number) 0
+  (byte) main::v64#0 ← (number) 0
+  if((byte) main::v64#0==(number) 0) goto main::@3
+  to:main::@4
+main::@3: scope:[main]  from main
+  (byte) main::b#1 ← (number) 1
+  to:main::@4
+main::@4: scope:[main]  from main main::@3
+  (byte) main::b#2 ← phi( main/(byte) main::b#0 main::@3/(byte) main::b#1 )
+  *((byte*) main::SCREEN#0 + (number) 0) ← (byte) main::b#2
+  to:main::@return
+main::@return: scope:[main]  from main::@4
+  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
+(void()) main()
+(label) main::@3
+(label) main::@4
+(label) main::@return
+(byte*) main::SCREEN
+(byte*) main::SCREEN#0
+(byte) main::b
+(byte) main::b#0
+(byte) main::b#1
+(byte) main::b#2
+(byte) main::v64
+(byte) main::v64#0
+
+Adding number conversion cast (unumber) 0 in (byte) main::b#0 ← (number) 0
+Adding number conversion cast (unumber) 0 in (byte) main::v64#0 ← (number) 0
+Adding number conversion cast (unumber) 0 in if((byte) main::v64#0==(number) 0) goto main::@3
+Adding number conversion cast (unumber) 1 in (byte) main::b#1 ← (number) 1
+Adding number conversion cast (unumber) 0 in *((byte*) main::SCREEN#0 + (number) 0) ← (byte) main::b#2
+Successful SSA optimization PassNAddNumberTypeConversions
+Inlining cast (byte*) main::SCREEN#0 ← (byte*)(number) $400
+Inlining cast (byte) main::b#0 ← (unumber)(number) 0
+Inlining cast (byte) main::v64#0 ← (unumber)(number) 0
+Inlining cast (byte) main::b#1 ← (unumber)(number) 1
+Successful SSA optimization Pass2InlineCast
+Simplifying constant pointer cast (byte*) 1024
+Simplifying constant integer cast 0
+Simplifying constant integer cast 0
+Simplifying constant integer cast 0
+Simplifying constant integer cast 1
+Simplifying constant integer cast 0
+Successful SSA optimization PassNCastSimplification
+Finalized unsigned number type (byte) 0
+Finalized unsigned number type (byte) 0
+Finalized unsigned number type (byte) 0
+Finalized unsigned number type (byte) 1
+Finalized unsigned number type (byte) 0
+Successful SSA optimization PassNFinalizeNumberTypeConversions
+Negating conditional jump and destination [3] if((byte) main::v64#0!=(byte) 0) goto main::@4
+Successful SSA optimization Pass2ConditionalJumpSequenceImprovement
+Constant (const byte*) main::SCREEN#0 = (byte*) 1024
+Constant (const byte) main::b#0 = 0
+Constant (const byte) main::v64#0 = 0
+Constant (const byte) main::b#1 = 1
+Successful SSA optimization Pass2ConstantIdentification
+Removing PHI-reference to removed block (main) in block main::@4
+if() condition always false - eliminating [3] if((const byte) main::v64#0!=(byte) 0) goto main::@4
+Successful SSA optimization Pass2ConstantIfs
+Simplifying expression containing zero main::SCREEN#0 in [6] *((const byte*) main::SCREEN#0 + (byte) 0) ← (byte) main::b#2
+Successful SSA optimization PassNSimplifyExpressionWithZero
+Eliminating unused constant (const byte) main::b#0
+Eliminating unused constant (const byte) main::v64#0
+Successful SSA optimization PassNEliminateUnusedVars
+Identical Phi Values (byte) main::b#2 (const byte) main::b#1
+Successful SSA optimization Pass2IdenticalPhiElimination
+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
+Adding NOP phi() at start of main::@3
+CALL GRAPH
+Calls in [] to main:2 
+
+Created 0 initial phi equivalence classes
+Coalesced down to 0 phi equivalence classes
+Culled Empty Block (label) @2
+Culled Empty Block (label) main::@3
+Renumbering block main::@4 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 main
+
+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] phi()
+  to:main::@1
+main::@1: scope:[main]  from main
+  [5] *((const byte*) main::SCREEN#0) ← (const byte) main::b#1
+  to:main::@return
+main::@return: scope:[main]  from main::@1
+  [6] return 
+  to:@return
+
+
+VARIABLE REGISTER WEIGHTS
+(void()) main()
+(byte*) main::SCREEN
+(byte) main::b
+(byte) main::v64
+
+Initial phi equivalence classes
+Complete equivalence classes
+
+INITIAL ASM
+Target platform is c64basic
+  // File Comments
+// Tests simple switch()-statement - not inside a loop
+  // 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
+    .const b = 1
+    jmp b1
+    // main::@1
+  b1:
+    // [5] *((const byte*) main::SCREEN#0) ← (const byte) main::b#1 -- _deref_pbuc1=vbuc2 
+    lda #b
+    sta SCREEN
+    jmp breturn
+    // main::@return
+  breturn:
+    // [6] return 
+    rts
+}
+  // File Data
+
+REGISTER UPLIFT POTENTIAL REGISTERS
+Statement [5] *((const byte*) main::SCREEN#0) ← (const byte) main::b#1 [ ] ( 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
+  // File Comments
+// Tests simple switch()-statement - not inside a loop
+  // 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
+    .const b = 1
+    jmp b1
+    // main::@1
+  b1:
+    // [5] *((const byte*) main::SCREEN#0) ← (const byte) main::b#1 -- _deref_pbuc1=vbuc2 
+    lda #b
+    sta SCREEN
+    jmp breturn
+    // main::@return
+  breturn:
+    // [6] return 
+    rts
+}
+  // File Data
+
+ASSEMBLER OPTIMIZATIONS
+Removing instruction jmp b1
+Removing instruction jmp bend
+Removing instruction jmp b1
+Removing instruction jmp breturn
+Succesful ASM optimization Pass5NextJumpElimination
+Removing instruction b1_from_bbegin:
+Removing instruction b1:
+Removing instruction main_from_b1:
+Removing instruction bend_from_b1:
+Succesful ASM optimization Pass5RedundantLabelElimination
+Removing instruction bend:
+Removing instruction b1:
+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
+(void()) main()
+(label) main::@1
+(label) main::@return
+(byte*) main::SCREEN
+(const byte*) main::SCREEN#0 SCREEN = (byte*) 1024
+(byte) main::b
+(const byte) main::b#1 b = (byte) 1
+(byte) main::v64
+
+
+
+FINAL ASSEMBLER
+Score: 12
+
+  // File Comments
+// Tests simple switch()-statement - not inside a loop
+  // 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
+    .const b = 1
+    // main::@1
+    // SCREEN[0] = b
+    // [5] *((const byte*) main::SCREEN#0) ← (const byte) main::b#1 -- _deref_pbuc1=vbuc2 
+    lda #b
+    sta SCREEN
+    // main::@return
+    // }
+    // [6] return 
+    rts
+}
+  // File Data
+

src/test/ref/switch-2.sym

@@ -0,0 +1,12 @@
+(label) @1
+(label) @begin
+(label) @end
+(void()) main()
+(label) main::@1
+(label) main::@return
+(byte*) main::SCREEN
+(const byte*) main::SCREEN#0 SCREEN = (byte*) 1024
+(byte) main::b
+(const byte) main::b#1 b = (byte) 1
+(byte) main::v64
+