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Added test of support for empty statements. Closes #267
This commit is contained in:
jespergravgaard
parent
75e71b5bbb
commit
dfc5905c5e
@ -43,7 +43,12 @@ public class TestPrograms {
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}
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@Test
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public void testStmtEmpty() throws IOException, URISyntaxException {
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public void testStmtEmpty1() throws IOException, URISyntaxException {
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compileAndCompare("stmt-empty-1.c");
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}
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@Test
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public void testStmtEmpty0() throws IOException, URISyntaxException {
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compileAndCompare("stmt-empty.c");
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}
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10
src/test/kc/stmt-empty-1.c
Normal file
10
src/test/kc/stmt-empty-1.c
Normal file
@ -0,0 +1,10 @@
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// Test an empty statement ';'
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const char str[] = "Hello!";
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const char* SCREEN = 0x0400;
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void main() {
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char b = 0;
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for (; str[b] != 0; ++b) ; // Empty body
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SCREEN[0] = '0'+b;
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}
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27
src/test/ref/stmt-empty-1.asm
Normal file
27
src/test/ref/stmt-empty-1.asm
Normal file
@ -0,0 +1,27 @@
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// Test an empty statement ';'
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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.label SCREEN = $400
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main: {
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ldx #0
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__b1:
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// for (; str[b] != 0; ++b)
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lda str,x
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cmp #0
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bne __b2
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// '0'+b
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txa
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axs #-['0']
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// SCREEN[0] = '0'+b
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// Empty body
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stx SCREEN
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// }
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rts
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__b2:
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// for (; str[b] != 0; ++b)
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inx
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jmp __b1
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}
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str: .text "Hello!"
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.byte 0
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19
src/test/ref/stmt-empty-1.cfg
Normal file
19
src/test/ref/stmt-empty-1.cfg
Normal file
@ -0,0 +1,19 @@
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(void()) main()
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main: scope:[main] from
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[0] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@2
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[1] (byte) main::b#2 ← phi( main/(byte) 0 main::@2/(byte) main::b#1 )
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[2] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@1
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[3] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2
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[4] *((const to_nomodify byte*) SCREEN) ← (byte~) main::$0
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to:main::@return
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main::@return: scope:[main] from main::@3
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[5] return
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to:@return
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main::@2: scope:[main] from main::@1
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[6] (byte) main::b#1 ← ++ (byte) main::b#2
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to:main::@1
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334
src/test/ref/stmt-empty-1.log
Normal file
334
src/test/ref/stmt-empty-1.log
Normal file
@ -0,0 +1,334 @@
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Inlined call call __init
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CONTROL FLOW GRAPH SSA
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(void()) main()
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main: scope:[main] from __start::@1
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(byte) main::b#0 ← (byte) 0
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to:main::@1
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main::@1: scope:[main] from main main::@2
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(byte) main::b#2 ← phi( main/(byte) main::b#0 main::@2/(byte) main::b#1 )
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(bool~) main::$1 ← *((const to_nomodify byte*) str + (byte) main::b#2) != (number) 0
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if((bool~) main::$1) goto main::@2
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to:main::@3
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main::@2: scope:[main] from main::@1
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(byte) main::b#3 ← phi( main::@1/(byte) main::b#2 )
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(byte) main::b#1 ← ++ (byte) main::b#3
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to:main::@1
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main::@3: scope:[main] from main::@1
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(byte) main::b#4 ← phi( main::@1/(byte) main::b#2 )
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(byte~) main::$0 ← (byte) '0' + (byte) main::b#4
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*((const to_nomodify byte*) SCREEN + (number) 0) ← (byte~) main::$0
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to:main::@return
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main::@return: scope:[main] from main::@3
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return
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to:@return
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(void()) __start()
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__start: scope:[__start] from
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to:__start::__init1
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__start::__init1: scope:[__start] from __start
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to:__start::@1
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__start::@1: scope:[__start] from __start::__init1
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call main
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to:__start::@2
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__start::@2: scope:[__start] from __start::@1
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to:__start::@return
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__start::@return: scope:[__start] from __start::@2
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return
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to:@return
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SYMBOL TABLE SSA
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(const to_nomodify byte*) SCREEN = (byte*)(number) $400
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(void()) __start()
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(label) __start::@1
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(label) __start::@2
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(label) __start::@return
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(label) __start::__init1
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(void()) main()
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(byte~) main::$0
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(bool~) main::$1
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(label) main::@1
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(label) main::@2
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(label) main::@3
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(label) main::@return
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(byte) main::b
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(byte) main::b#0
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(byte) main::b#1
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(byte) main::b#2
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(byte) main::b#3
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(byte) main::b#4
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(const to_nomodify byte*) str[] = (byte*) "Hello!"
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Adding number conversion cast (unumber) 0 in (bool~) main::$1 ← *((const to_nomodify byte*) str + (byte) main::b#2) != (number) 0
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Adding number conversion cast (unumber) 0 in *((const to_nomodify byte*) SCREEN + (number) 0) ← (byte~) main::$0
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant pointer cast (byte*) 1024
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Simplifying constant integer cast 0
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Simplifying constant integer cast 0
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 0
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Finalized unsigned number type (byte) 0
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias main::b#2 = main::b#3 main::b#4
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Successful SSA optimization Pass2AliasElimination
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Simple Condition (bool~) main::$1 [3] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const byte) main::b#0 = 0
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Successful SSA optimization Pass2ConstantIdentification
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Simplifying expression containing zero SCREEN in [6] *((const to_nomodify byte*) SCREEN + (byte) 0) ← (byte~) main::$0
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Successful SSA optimization PassNSimplifyExpressionWithZero
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Removing unused procedure __start
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Removing unused procedure block __start
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Removing unused procedure block __start::__init1
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Removing unused procedure block __start::@1
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Removing unused procedure block __start::@2
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Removing unused procedure block __start::@return
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Successful SSA optimization PassNEliminateEmptyStart
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Inlining constant with var siblings (const byte) main::b#0
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Constant inlined main::b#0 = (byte) 0
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Successful SSA optimization Pass2ConstantInlining
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Adding NOP phi() at start of main
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CALL GRAPH
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Created 1 initial phi equivalence classes
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Coalesced [7] main::b#5 ← main::b#1
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Coalesced down to 1 phi equivalence classes
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Adding NOP phi() at start of main
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FINAL CONTROL FLOW GRAPH
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(void()) main()
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main: scope:[main] from
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[0] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@2
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[1] (byte) main::b#2 ← phi( main/(byte) 0 main::@2/(byte) main::b#1 )
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[2] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@1
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[3] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2
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[4] *((const to_nomodify byte*) SCREEN) ← (byte~) main::$0
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to:main::@return
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main::@return: scope:[main] from main::@3
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[5] return
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to:@return
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main::@2: scope:[main] from main::@1
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[6] (byte) main::b#1 ← ++ (byte) main::b#2
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to:main::@1
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VARIABLE REGISTER WEIGHTS
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(void()) main()
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(byte~) main::$0 4.0
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(byte) main::b
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(byte) main::b#1 22.0
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(byte) main::b#2 17.5
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Initial phi equivalence classes
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[ main::b#2 main::b#1 ]
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Added variable main::$0 to live range equivalence class [ main::$0 ]
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Complete equivalence classes
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[ main::b#2 main::b#1 ]
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[ main::$0 ]
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Allocated zp[1]:2 [ main::b#2 main::b#1 ]
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Allocated zp[1]:3 [ main::$0 ]
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INITIAL ASM
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Target platform is c64basic / MOS6502X
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// File Comments
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// Test an empty statement ';'
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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// main
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main: {
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.label __0 = 3
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.label b = 2
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// [1] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [1] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
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lda #0
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sta.z b
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jmp __b1
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// main::@1
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__b1:
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// [2] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuz1_neq_0_then_la1
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ldy.z b
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lda str,y
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cmp #0
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bne __b2
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jmp __b3
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// main::@3
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__b3:
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// [3] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 -- vbuz1=vbuc1_plus_vbuz2
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lax.z b
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axs #-['0']
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stx.z __0
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// [4] *((const to_nomodify byte*) SCREEN) ← (byte~) main::$0 -- _deref_pbuc1=vbuz1
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// Empty body
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lda.z __0
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sta SCREEN
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jmp __breturn
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// main::@return
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__breturn:
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// [5] return
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rts
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// main::@2
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__b2:
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// [6] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuz1=_inc_vbuz1
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inc.z b
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// [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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__b1_from___b2:
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// [1] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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}
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// File Data
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str: .text "Hello!"
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.byte 0
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [2] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 [ main::b#2 ] ( [ main::b#2 ] { } ) always clobbers reg byte a
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Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::b#2 main::b#1 ]
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Statement [3] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 [ main::$0 ] ( [ main::$0 ] { } ) always clobbers reg byte a
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Statement [2] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 [ main::b#2 ] ( [ main::b#2 ] { } ) always clobbers reg byte a
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Statement [3] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 [ main::$0 ] ( [ main::$0 ] { } ) always clobbers reg byte a
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Potential registers zp[1]:2 [ main::b#2 main::b#1 ] : zp[1]:2 , reg byte x , reg byte y ,
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Potential registers zp[1]:3 [ main::$0 ] : zp[1]:3 , reg byte a , reg byte x , reg byte y ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [main] 39.5: zp[1]:2 [ main::b#2 main::b#1 ] 4: zp[1]:3 [ main::$0 ]
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Uplift Scope []
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Uplifting [main] best 237 combination reg byte x [ main::b#2 main::b#1 ] reg byte x [ main::$0 ]
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Uplifting [] best 237 combination
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Test an empty statement ';'
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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// main
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main: {
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// [1] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [1] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
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ldx #0
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jmp __b1
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// main::@1
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__b1:
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// [2] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_neq_0_then_la1
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lda str,x
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cmp #0
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bne __b2
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jmp __b3
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// main::@3
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__b3:
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// [3] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 -- vbuxx=vbuc1_plus_vbuxx
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txa
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axs #-['0']
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// [4] *((const to_nomodify byte*) SCREEN) ← (byte~) main::$0 -- _deref_pbuc1=vbuxx
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// Empty body
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stx SCREEN
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jmp __breturn
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// main::@return
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__breturn:
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// [5] return
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rts
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// main::@2
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__b2:
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// [6] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuxx=_inc_vbuxx
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inx
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// [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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__b1_from___b2:
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// [1] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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}
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// File Data
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str: .text "Hello!"
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.byte 0
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ASSEMBLER OPTIMIZATIONS
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Removing instruction jmp __b1
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Removing instruction jmp __b3
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Removing instruction jmp __breturn
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Succesful ASM optimization Pass5NextJumpElimination
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Removing instruction __b1_from_main:
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Removing instruction __b3:
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Removing instruction __breturn:
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Removing instruction __b1_from___b2:
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Succesful ASM optimization Pass5UnusedLabelElimination
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FINAL SYMBOL TABLE
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(const to_nomodify byte*) SCREEN = (byte*) 1024
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(void()) main()
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(byte~) main::$0 reg byte x 4.0
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(label) main::@1
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(label) main::@2
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(label) main::@3
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(label) main::@return
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(byte) main::b
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(byte) main::b#1 reg byte x 22.0
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(byte) main::b#2 reg byte x 17.5
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(const to_nomodify byte*) str[] = (byte*) "Hello!"
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reg byte x [ main::b#2 main::b#1 ]
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reg byte x [ main::$0 ]
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FINAL ASSEMBLER
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Score: 174
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// File Comments
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// Test an empty statement ';'
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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// main
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main: {
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// [1] phi from main to main::@1 [phi:main->main::@1]
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// [1] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
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ldx #0
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// main::@1
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__b1:
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// for (; str[b] != 0; ++b)
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// [2] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_neq_0_then_la1
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lda str,x
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cmp #0
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bne __b2
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// main::@3
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// '0'+b
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// [3] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 -- vbuxx=vbuc1_plus_vbuxx
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txa
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axs #-['0']
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// SCREEN[0] = '0'+b
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// [4] *((const to_nomodify byte*) SCREEN) ← (byte~) main::$0 -- _deref_pbuc1=vbuxx
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// Empty body
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stx SCREEN
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// main::@return
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// }
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// [5] return
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rts
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// main::@2
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__b2:
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// for (; str[b] != 0; ++b)
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// [6] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuxx=_inc_vbuxx
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inx
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// [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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// [1] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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||||
}
|
||||
// File Data
|
||||
str: .text "Hello!"
|
||||
.byte 0
|
||||
|
||||
14
src/test/ref/stmt-empty-1.sym
Normal file
14
src/test/ref/stmt-empty-1.sym
Normal file
@ -0,0 +1,14 @@
|
||||
(const to_nomodify byte*) SCREEN = (byte*) 1024
|
||||
(void()) main()
|
||||
(byte~) main::$0 reg byte x 4.0
|
||||
(label) main::@1
|
||||
(label) main::@2
|
||||
(label) main::@3
|
||||
(label) main::@return
|
||||
(byte) main::b
|
||||
(byte) main::b#1 reg byte x 22.0
|
||||
(byte) main::b#2 reg byte x 17.5
|
||||
(const to_nomodify byte*) str[] = (byte*) "Hello!"
|
||||
|
||||
reg byte x [ main::b#2 main::b#1 ]
|
||||
reg byte x [ main::$0 ]
|
||||
Loading…
Reference in New Issue
Block a user