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Fixed infinite compiler loop when complex loops contain &&. Closes #144
This commit is contained in:
jespergravgaard
parent
ac73bb15e3
commit
183494e141
@ -81,7 +81,7 @@ public class PassNLoopAnalysis extends Pass2SsaOptimization {
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/**
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* Coalesce loops that are neither nested, nor disjoint
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* @param loopSet The set of loops
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* @return true if there might be more loops to coalesce - meaning the coalescer shoulbe be called again.
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* @return true if there might be more loops to coalesce - meaning the coalescer should be be called again.
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* false if no loops can be coalesced.
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*/
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private boolean coalesceLoops(NaturalLoopSet loopSet) {
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@ -91,6 +91,13 @@ public class PassNLoopAnalysis extends Pass2SsaOptimization {
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if(other.equals(loop)) {
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// Same loop - do not process
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continue;
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} else if(loop.nests(other) && other.nests(loop)) {
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// The two loops have exactly the same blocks - remove one & restart
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if(getLog().isVerboseLoopAnalysis()) {
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getLog().append("Removing duplicate: " + other.toString());
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}
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loopSet.remove(other);
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return true;
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} else if(loop.nests(other) || other.nests(loop)) {
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// One of the loops nest the other loop
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continue;
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@ -44,6 +44,11 @@ public class TestPrograms {
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AsmFragmentTemplateUsages.logUsages(log, false, false, false, false, false, false);
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}
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@Test
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public void testDuplicateLoopProblem() throws IOException, URISyntaxException {
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compileAndCompare("duplicate-loop-problem");
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}
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@Test
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public void testUseUninitialized() throws IOException, URISyntaxException {
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compileAndCompare("useuninitialized");
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@ -134,10 +139,10 @@ public class TestPrograms {
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compileAndCompare("runtime-unused-procedure");
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}
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// @Test
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// public void testRobozzle64() throws IOException, URISyntaxException {
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// compileAndCompare("complex/robozzle64/robozzle64");
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// }
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//@Test
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//public void testRobozzle64() throws IOException, URISyntaxException {
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// compileAndCompare("complex/robozzle64/robozzle64");
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//}
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//@Test
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//public void testTravisGame() throws IOException, URISyntaxException {
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16
src/test/kc/duplicate-loop-problem.kc
Executable file
16
src/test/kc/duplicate-loop-problem.kc
Executable file
@ -0,0 +1,16 @@
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// Duplicate Loop Problem from Richard-William Loerakker
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// Resulted in infinite loop in loop depth analysis
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const byte* DC00 = $DC00;
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byte rpc;
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byte key;
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void main() {
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do {
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rpc++;
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do {
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key = *DC00;
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} while(key == 0 && ((key & %00011111) == %00011111));
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} while (true);
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}
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22
src/test/ref/duplicate-loop-problem.asm
Normal file
22
src/test/ref/duplicate-loop-problem.asm
Normal file
@ -0,0 +1,22 @@
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// Duplicate Loop Problem from Richard-William Loerakker
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// Resulted in infinite loop in loop depth analysis
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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 DC00 = $dc00
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main: {
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ldy #0
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b1:
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iny
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b2:
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ldx DC00
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txa
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and #$1f
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cpx #0
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beq b5
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jmp b1
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b5:
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cmp #$1f
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beq b2
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jmp b1
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}
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24
src/test/ref/duplicate-loop-problem.cfg
Normal file
24
src/test/ref/duplicate-loop-problem.cfg
Normal file
@ -0,0 +1,24 @@
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@begin: scope:[] from
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[0] phi()
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to:@1
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@1: scope:[] from @begin
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[1] phi()
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[2] call main
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to:@end
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@end: scope:[] from @1
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[3] phi()
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main: scope:[main] from @1
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[4] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@2 main::@5
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[5] (byte) rpc#4 ← phi( main/(byte/signed byte/word/signed word/dword/signed dword) 0 main::@2/(byte) rpc#1 main::@5/(byte) rpc#1 )
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[6] (byte) rpc#1 ← ++ (byte) rpc#4
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to:main::@2
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main::@2: scope:[main] from main::@1 main::@5
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[7] (byte) key#1 ← *((const byte*) DC00#0)
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[8] (byte~) main::$1 ← (byte) key#1 & (byte/signed byte/word/signed word/dword/signed dword) $1f
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[9] if((byte) key#1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto main::@5
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to:main::@1
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main::@5: scope:[main] from main::@2
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[10] if((byte~) main::$1==(byte/signed byte/word/signed word/dword/signed dword) $1f) goto main::@2
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to:main::@1
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432
src/test/ref/duplicate-loop-problem.log
Normal file
432
src/test/ref/duplicate-loop-problem.log
Normal file
@ -0,0 +1,432 @@
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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(byte*) DC00#0 ← ((byte*)) (word/dword/signed dword) $dc00
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(byte) rpc#0 ← (byte/signed byte/word/signed word/dword/signed dword) 0
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(byte) key#0 ← (byte/signed byte/word/signed word/dword/signed dword) 0
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to:@1
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main: scope:[main] from @1
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(byte) rpc#7 ← phi( @1/(byte) rpc#9 )
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to:main::@1
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main::@1: scope:[main] from main main::@3
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(byte) rpc#4 ← phi( main/(byte) rpc#7 main::@3/(byte) rpc#8 )
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(byte) rpc#1 ← ++ (byte) rpc#4
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to:main::@2
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main::@2: scope:[main] from main::@1 main::@2
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(byte) rpc#10 ← phi( main::@1/(byte) rpc#1 main::@2/(byte) rpc#10 )
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(byte) key#1 ← *((byte*) DC00#0)
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(bool~) main::$0 ← (byte) key#1 == (byte/signed byte/word/signed word/dword/signed dword) 0
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(byte~) main::$1 ← (byte) key#1 & (byte/signed byte/word/signed word/dword/signed dword) $1f
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(bool~) main::$2 ← (byte~) main::$1 == (byte/signed byte/word/signed word/dword/signed dword) $1f
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(bool~) main::$3 ← (bool~) main::$0 && (bool~) main::$2
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if((bool~) main::$3) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@2
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(byte) key#6 ← phi( main::@2/(byte) key#1 )
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(byte) rpc#8 ← phi( main::@2/(byte) rpc#10 )
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if(true) goto main::@1
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to:main::@return
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main::@return: scope:[main] from main::@3
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(byte) key#4 ← phi( main::@3/(byte) key#6 )
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(byte) rpc#5 ← phi( main::@3/(byte) rpc#8 )
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(byte) rpc#2 ← (byte) rpc#5
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(byte) key#2 ← (byte) key#4
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return
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to:@return
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@1: scope:[] from @begin
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(byte) key#7 ← phi( @begin/(byte) key#0 )
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(byte) rpc#9 ← phi( @begin/(byte) rpc#0 )
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call main
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to:@2
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@2: scope:[] from @1
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(byte) key#5 ← phi( @1/(byte) key#2 )
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(byte) rpc#6 ← phi( @1/(byte) rpc#2 )
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(byte) rpc#3 ← (byte) rpc#6
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(byte) key#3 ← (byte) key#5
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to:@end
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@end: scope:[] from @2
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SYMBOL TABLE SSA
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(label) @1
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(label) @2
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(label) @begin
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(label) @end
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(byte*) DC00
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(byte*) DC00#0
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(byte) key
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(byte) key#0
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(byte) key#1
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(byte) key#2
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(byte) key#3
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(byte) key#4
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(byte) key#5
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(byte) key#6
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(byte) key#7
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(void()) main()
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(bool~) main::$0
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(byte~) main::$1
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(bool~) main::$2
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(bool~) main::$3
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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) rpc
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(byte) rpc#0
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(byte) rpc#1
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(byte) rpc#10
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(byte) rpc#2
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(byte) rpc#3
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(byte) rpc#4
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(byte) rpc#5
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(byte) rpc#6
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(byte) rpc#7
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(byte) rpc#8
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(byte) rpc#9
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Alias (byte) rpc#10 = (byte) rpc#8 (byte) rpc#5 (byte) rpc#2
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Alias (byte) key#1 = (byte) key#6 (byte) key#4 (byte) key#2
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Alias (byte) rpc#0 = (byte) rpc#9
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Alias (byte) key#0 = (byte) key#7
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Alias (byte) rpc#3 = (byte) rpc#6
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Alias (byte) key#3 = (byte) key#5
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Successful SSA optimization Pass2AliasElimination
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Self Phi Eliminated (byte) rpc#10
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Successful SSA optimization Pass2SelfPhiElimination
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Redundant Phi (byte) rpc#7 (byte) rpc#0
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Redundant Phi (byte) rpc#10 (byte) rpc#1
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Redundant Phi (byte) rpc#3 (byte) rpc#10
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Redundant Phi (byte) key#3 (byte) key#1
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Successful SSA optimization Pass2RedundantPhiElimination
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Rewriting && if()-condition to two if()s [11] (bool~) main::$3 ← (bool~) main::$0 && (bool~) main::$2
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Successful SSA optimization Pass2ConditionalAndOrRewriting
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Constant (const byte*) DC00#0 = ((byte*))$dc00
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Constant (const byte) rpc#0 = 0
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Constant (const byte) key#0 = 0
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Successful SSA optimization Pass2ConstantIdentification
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if() condition always true - replacing block destination [7] if(true) goto main::@1
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Successful SSA optimization Pass2ConstantIfs
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Successful SSA optimization PassNEliminateUnusedVars
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Removing unused block main::@return
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Successful SSA optimization Pass2EliminateUnusedBlocks
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Culled Empty Block (label) main::@3
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Culled Empty Block (label) @2
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Successful SSA optimization Pass2CullEmptyBlocks
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Simple Condition (bool~) main::$0 [6] if((byte) key#1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto main::@5
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Simple Condition (bool~) main::$2 [8] if((byte~) main::$1==(byte/signed byte/word/signed word/dword/signed dword) $1f) goto main::@2
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Inlining constant with var siblings (const byte) rpc#0
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Constant inlined rpc#0 = (byte/signed byte/word/signed word/dword/signed dword) 0
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Successful SSA optimization Pass2ConstantInlining
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Added new block during phi lifting main::@6(between main::@2 and main::@1)
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Added new block during phi lifting main::@7(between main::@5 and main::@1)
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @end
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Adding NOP phi() at start of main
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CALL GRAPH
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Calls in [] to main:2
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Created 1 initial phi equivalence classes
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Coalesced [10] rpc#11 ← rpc#1
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Coalesced (already) [12] rpc#12 ← rpc#1
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Coalesced down to 1 phi equivalence classes
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Culled Empty Block (label) main::@6
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Culled Empty Block (label) main::@7
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @end
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Adding NOP phi() at start of main
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FINAL CONTROL FLOW GRAPH
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@begin: scope:[] from
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[0] phi()
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to:@1
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@1: scope:[] from @begin
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[1] phi()
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[2] call main
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to:@end
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@end: scope:[] from @1
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[3] phi()
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main: scope:[main] from @1
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[4] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@2 main::@5
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[5] (byte) rpc#4 ← phi( main/(byte/signed byte/word/signed word/dword/signed dword) 0 main::@2/(byte) rpc#1 main::@5/(byte) rpc#1 )
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[6] (byte) rpc#1 ← ++ (byte) rpc#4
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to:main::@2
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main::@2: scope:[main] from main::@1 main::@5
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[7] (byte) key#1 ← *((const byte*) DC00#0)
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[8] (byte~) main::$1 ← (byte) key#1 & (byte/signed byte/word/signed word/dword/signed dword) $1f
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[9] if((byte) key#1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto main::@5
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to:main::@1
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main::@5: scope:[main] from main::@2
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[10] if((byte~) main::$1==(byte/signed byte/word/signed word/dword/signed dword) $1f) goto main::@2
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to:main::@1
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VARIABLE REGISTER WEIGHTS
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(byte*) DC00
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(byte) key
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(byte) key#1 151.5
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(void()) main()
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(byte~) main::$1 101.0
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(byte) rpc
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(byte) rpc#1 42.6
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(byte) rpc#4 213.0
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Initial phi equivalence classes
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[ rpc#4 rpc#1 ]
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Added variable key#1 to zero page equivalence class [ key#1 ]
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Added variable main::$1 to zero page equivalence class [ main::$1 ]
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Complete equivalence classes
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[ rpc#4 rpc#1 ]
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[ key#1 ]
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[ main::$1 ]
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Allocated zp ZP_BYTE:2 [ rpc#4 rpc#1 ]
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Allocated zp ZP_BYTE:3 [ key#1 ]
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Allocated zp ZP_BYTE:4 [ main::$1 ]
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INITIAL ASM
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//SEG0 File Comments
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// Duplicate Loop Problem from Richard-William Loerakker
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// Resulted in infinite loop in loop depth analysis
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//SEG1 Basic Upstart
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.pc = $801 "Basic"
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:BasicUpstart(bbegin)
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.pc = $80d "Program"
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//SEG2 Global Constants & labels
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.label DC00 = $dc00
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.label rpc = 2
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.label key = 3
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//SEG3 @begin
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bbegin:
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//SEG4 [1] phi from @begin to @1 [phi:@begin->@1]
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b1_from_bbegin:
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jmp b1
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//SEG5 @1
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b1:
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//SEG6 [2] call main
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//SEG7 [4] phi from @1 to main [phi:@1->main]
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main_from_b1:
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jsr main
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//SEG8 [3] phi from @1 to @end [phi:@1->@end]
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bend_from_b1:
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jmp bend
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//SEG9 @end
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bend:
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//SEG10 main
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main: {
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.label _1 = 4
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//SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
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b1_from_main:
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//SEG12 [5] phi (byte) rpc#4 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
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lda #0
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sta rpc
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jmp b1
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//SEG13 main::@1
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b1:
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//SEG14 [6] (byte) rpc#1 ← ++ (byte) rpc#4 -- vbuz1=_inc_vbuz1
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inc rpc
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jmp b2
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//SEG15 main::@2
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b2:
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//SEG16 [7] (byte) key#1 ← *((const byte*) DC00#0) -- vbuz1=_deref_pbuc1
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lda DC00
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sta key
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//SEG17 [8] (byte~) main::$1 ← (byte) key#1 & (byte/signed byte/word/signed word/dword/signed dword) $1f -- vbuz1=vbuz2_band_vbuc1
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lda #$1f
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and key
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sta _1
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//SEG18 [9] if((byte) key#1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto main::@5 -- vbuz1_eq_0_then_la1
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lda key
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cmp #0
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beq b5
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//SEG19 [5] phi from main::@2 main::@5 to main::@1 [phi:main::@2/main::@5->main::@1]
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b1_from_b2:
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b1_from_b5:
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//SEG20 [5] phi (byte) rpc#4 = (byte) rpc#1 [phi:main::@2/main::@5->main::@1#0] -- register_copy
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jmp b1
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//SEG21 main::@5
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b5:
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//SEG22 [10] if((byte~) main::$1==(byte/signed byte/word/signed word/dword/signed dword) $1f) goto main::@2 -- vbuz1_eq_vbuc1_then_la1
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lda _1
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cmp #$1f
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beq b2
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jmp b1_from_b5
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}
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [8] (byte~) main::$1 ← (byte) key#1 & (byte/signed byte/word/signed word/dword/signed dword) $1f [ rpc#1 key#1 main::$1 ] ( main:2 [ rpc#1 key#1 main::$1 ] ) always clobbers reg byte a
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Removing always clobbered register reg byte a as potential for zp ZP_BYTE:2 [ rpc#4 rpc#1 ]
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Removing always clobbered register reg byte a as potential for zp ZP_BYTE:3 [ key#1 ]
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Statement [8] (byte~) main::$1 ← (byte) key#1 & (byte/signed byte/word/signed word/dword/signed dword) $1f [ rpc#1 key#1 main::$1 ] ( main:2 [ rpc#1 key#1 main::$1 ] ) always clobbers reg byte a
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Potential registers zp ZP_BYTE:2 [ rpc#4 rpc#1 ] : zp ZP_BYTE:2 , reg byte x , reg byte y ,
|
||||
Potential registers zp ZP_BYTE:3 [ key#1 ] : zp ZP_BYTE:3 , reg byte x , reg byte y ,
|
||||
Potential registers zp ZP_BYTE:4 [ main::$1 ] : zp ZP_BYTE:4 , reg byte a , reg byte x , reg byte y ,
|
||||
|
||||
REGISTER UPLIFT SCOPES
|
||||
Uplift Scope [] 255.6: zp ZP_BYTE:2 [ rpc#4 rpc#1 ] 151.5: zp ZP_BYTE:3 [ key#1 ]
|
||||
Uplift Scope [main] 101: zp ZP_BYTE:4 [ main::$1 ]
|
||||
|
||||
Uplifting [] best 2742 combination reg byte y [ rpc#4 rpc#1 ] reg byte x [ key#1 ]
|
||||
Uplifting [main] best 2142 combination reg byte a [ main::$1 ]
|
||||
|
||||
ASSEMBLER BEFORE OPTIMIZATION
|
||||
//SEG0 File Comments
|
||||
// Duplicate Loop Problem from Richard-William Loerakker
|
||||
// Resulted in infinite loop in loop depth analysis
|
||||
//SEG1 Basic Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(bbegin)
|
||||
.pc = $80d "Program"
|
||||
//SEG2 Global Constants & labels
|
||||
.label DC00 = $dc00
|
||||
//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
|
||||
//SEG7 [4] phi from @1 to main [phi:@1->main]
|
||||
main_from_b1:
|
||||
jsr main
|
||||
//SEG8 [3] phi from @1 to @end [phi:@1->@end]
|
||||
bend_from_b1:
|
||||
jmp bend
|
||||
//SEG9 @end
|
||||
bend:
|
||||
//SEG10 main
|
||||
main: {
|
||||
//SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
b1_from_main:
|
||||
//SEG12 [5] phi (byte) rpc#4 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuyy=vbuc1
|
||||
ldy #0
|
||||
jmp b1
|
||||
//SEG13 main::@1
|
||||
b1:
|
||||
//SEG14 [6] (byte) rpc#1 ← ++ (byte) rpc#4 -- vbuyy=_inc_vbuyy
|
||||
iny
|
||||
jmp b2
|
||||
//SEG15 main::@2
|
||||
b2:
|
||||
//SEG16 [7] (byte) key#1 ← *((const byte*) DC00#0) -- vbuxx=_deref_pbuc1
|
||||
ldx DC00
|
||||
//SEG17 [8] (byte~) main::$1 ← (byte) key#1 & (byte/signed byte/word/signed word/dword/signed dword) $1f -- vbuaa=vbuxx_band_vbuc1
|
||||
txa
|
||||
and #$1f
|
||||
//SEG18 [9] if((byte) key#1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto main::@5 -- vbuxx_eq_0_then_la1
|
||||
cpx #0
|
||||
beq b5
|
||||
//SEG19 [5] phi from main::@2 main::@5 to main::@1 [phi:main::@2/main::@5->main::@1]
|
||||
b1_from_b2:
|
||||
b1_from_b5:
|
||||
//SEG20 [5] phi (byte) rpc#4 = (byte) rpc#1 [phi:main::@2/main::@5->main::@1#0] -- register_copy
|
||||
jmp b1
|
||||
//SEG21 main::@5
|
||||
b5:
|
||||
//SEG22 [10] if((byte~) main::$1==(byte/signed byte/word/signed word/dword/signed dword) $1f) goto main::@2 -- vbuaa_eq_vbuc1_then_la1
|
||||
cmp #$1f
|
||||
beq b2
|
||||
jmp b1_from_b5
|
||||
}
|
||||
|
||||
ASSEMBLER OPTIMIZATIONS
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp bend
|
||||
Removing instruction jmp b1
|
||||
Removing instruction jmp b2
|
||||
Succesful ASM optimization Pass5NextJumpElimination
|
||||
Removing instruction b1_from_bbegin:
|
||||
Removing instruction b1:
|
||||
Removing instruction main_from_b1:
|
||||
Removing instruction bend_from_b1:
|
||||
Removing instruction b1_from_b2:
|
||||
Succesful ASM optimization Pass5RedundantLabelElimination
|
||||
Removing instruction bend:
|
||||
Removing instruction b1_from_main:
|
||||
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||
Updating BasicUpstart to call main directly
|
||||
Removing instruction jsr main
|
||||
Succesful ASM optimization Pass5SkipBegin
|
||||
Skipping double jump to b1 in jmp b1_from_b5
|
||||
Succesful ASM optimization Pass5DoubleJumpElimination
|
||||
Relabelling long label b1_from_b5 to b3
|
||||
Succesful ASM optimization Pass5RelabelLongLabels
|
||||
Removing instruction bbegin:
|
||||
Removing instruction b3:
|
||||
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||
|
||||
FINAL SYMBOL TABLE
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(byte*) DC00
|
||||
(const byte*) DC00#0 DC00 = ((byte*))(word/dword/signed dword) $dc00
|
||||
(byte) key
|
||||
(byte) key#1 reg byte x 151.5
|
||||
(void()) main()
|
||||
(byte~) main::$1 reg byte a 101.0
|
||||
(label) main::@1
|
||||
(label) main::@2
|
||||
(label) main::@5
|
||||
(byte) rpc
|
||||
(byte) rpc#1 reg byte y 42.6
|
||||
(byte) rpc#4 reg byte y 213.0
|
||||
|
||||
reg byte y [ rpc#4 rpc#1 ]
|
||||
reg byte x [ key#1 ]
|
||||
reg byte a [ main::$1 ]
|
||||
|
||||
|
||||
FINAL ASSEMBLER
|
||||
Score: 2070
|
||||
|
||||
//SEG0 File Comments
|
||||
// Duplicate Loop Problem from Richard-William Loerakker
|
||||
// Resulted in infinite loop in loop depth analysis
|
||||
//SEG1 Basic Upstart
|
||||
.pc = $801 "Basic"
|
||||
:BasicUpstart(main)
|
||||
.pc = $80d "Program"
|
||||
//SEG2 Global Constants & labels
|
||||
.label DC00 = $dc00
|
||||
//SEG3 @begin
|
||||
//SEG4 [1] phi from @begin to @1 [phi:@begin->@1]
|
||||
//SEG5 @1
|
||||
//SEG6 [2] call main
|
||||
//SEG7 [4] phi from @1 to main [phi:@1->main]
|
||||
//SEG8 [3] phi from @1 to @end [phi:@1->@end]
|
||||
//SEG9 @end
|
||||
//SEG10 main
|
||||
main: {
|
||||
//SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
|
||||
//SEG12 [5] phi (byte) rpc#4 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuyy=vbuc1
|
||||
ldy #0
|
||||
//SEG13 main::@1
|
||||
b1:
|
||||
//SEG14 [6] (byte) rpc#1 ← ++ (byte) rpc#4 -- vbuyy=_inc_vbuyy
|
||||
iny
|
||||
//SEG15 main::@2
|
||||
b2:
|
||||
//SEG16 [7] (byte) key#1 ← *((const byte*) DC00#0) -- vbuxx=_deref_pbuc1
|
||||
ldx DC00
|
||||
//SEG17 [8] (byte~) main::$1 ← (byte) key#1 & (byte/signed byte/word/signed word/dword/signed dword) $1f -- vbuaa=vbuxx_band_vbuc1
|
||||
txa
|
||||
and #$1f
|
||||
//SEG18 [9] if((byte) key#1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto main::@5 -- vbuxx_eq_0_then_la1
|
||||
cpx #0
|
||||
beq b5
|
||||
//SEG19 [5] phi from main::@2 main::@5 to main::@1 [phi:main::@2/main::@5->main::@1]
|
||||
//SEG20 [5] phi (byte) rpc#4 = (byte) rpc#1 [phi:main::@2/main::@5->main::@1#0] -- register_copy
|
||||
jmp b1
|
||||
//SEG21 main::@5
|
||||
b5:
|
||||
//SEG22 [10] if((byte~) main::$1==(byte/signed byte/word/signed word/dword/signed dword) $1f) goto main::@2 -- vbuaa_eq_vbuc1_then_la1
|
||||
cmp #$1f
|
||||
beq b2
|
||||
jmp b1
|
||||
}
|
||||
|
||||
19
src/test/ref/duplicate-loop-problem.sym
Normal file
19
src/test/ref/duplicate-loop-problem.sym
Normal file
@ -0,0 +1,19 @@
|
||||
(label) @1
|
||||
(label) @begin
|
||||
(label) @end
|
||||
(byte*) DC00
|
||||
(const byte*) DC00#0 DC00 = ((byte*))(word/dword/signed dword) $dc00
|
||||
(byte) key
|
||||
(byte) key#1 reg byte x 151.5
|
||||
(void()) main()
|
||||
(byte~) main::$1 reg byte a 101.0
|
||||
(label) main::@1
|
||||
(label) main::@2
|
||||
(label) main::@5
|
||||
(byte) rpc
|
||||
(byte) rpc#1 reg byte y 42.6
|
||||
(byte) rpc#4 reg byte y 213.0
|
||||
|
||||
reg byte y [ rpc#4 rpc#1 ]
|
||||
reg byte x [ key#1 ]
|
||||
reg byte a [ main::$1 ]
|
||||
Loading…
Reference in New Issue
Block a user