mirror of
https://gitlab.com/camelot/kickc.git
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Added initial constant string consolidation.
This commit is contained in:
jespergravgaard
parent
dfd9af4d84
commit
fe0035af82
@ -245,6 +245,7 @@ public class Compiler {
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optimizations.add(new Pass2NopCastElimination(program));
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optimizations.add(new Pass2NopCastElimination(program));
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optimizations.add(new Pass2EliminateUnusedBlocks(program));
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optimizations.add(new Pass2EliminateUnusedBlocks(program));
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optimizations.add(new Pass2RangeResolving(program));
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optimizations.add(new Pass2RangeResolving(program));
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optimizations.add(new Pass2ConstantStringConsolidation(program));
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pass2Execute(optimizations);
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pass2Execute(optimizations);
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}
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}
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@ -278,6 +279,7 @@ public class Compiler {
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// Constant inlining optimizations - as the last step to ensure that constant identification has been completed
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// Constant inlining optimizations - as the last step to ensure that constant identification has been completed
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List<Pass2SsaOptimization> constantOptimizations = new ArrayList<>();
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List<Pass2SsaOptimization> constantOptimizations = new ArrayList<>();
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constantOptimizations.add(new Pass2ConstantInlining(program));
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constantOptimizations.add(new Pass2ConstantInlining(program));
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constantOptimizations.add(new Pass2ConstantStringConsolidation(program));
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constantOptimizations.add(new Pass2IdenticalPhiElimination(program));
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constantOptimizations.add(new Pass2IdenticalPhiElimination(program));
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constantOptimizations.add(new Pass2ConstantIdentification(program));
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constantOptimizations.add(new Pass2ConstantIdentification(program));
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constantOptimizations.add(new Pass2ConstantAdditionElimination(program));
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constantOptimizations.add(new Pass2ConstantAdditionElimination(program));
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@ -0,0 +1,82 @@
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package dk.camelot64.kickc.passes;
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import dk.camelot64.kickc.model.Program;
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import dk.camelot64.kickc.model.symbols.ConstantVar;
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import dk.camelot64.kickc.model.values.*;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* Compiler Pass finding and consolidating identical constant strings
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*/
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public class Pass2ConstantStringConsolidation extends Pass2SsaOptimization {
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public Pass2ConstantStringConsolidation(Program program) {
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super(program);
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}
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/**
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* Find identical constant strings and consolidate
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*
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* @return true optimization was performed. false if no optimization was possible.
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*/
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@Override
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public boolean step() {
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boolean modified = false;
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// Build a map with all constant strings
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Map<String, List<ConstantVar>> constantStringMap = new HashMap<>();
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for(ConstantVar constVar : getScope().getAllConstants(true)) {
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ConstantValue constVal = constVar.getValue();
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if(constVal instanceof ConstantString) {
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String constString = ((ConstantString) constVal).getString();
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List<ConstantVar> constantVars = constantStringMap.get(constString);
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if(constantVars==null) {
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constantVars = new ArrayList<>();
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constantStringMap.put(constString, constantVars);
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}
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constantVars.add(constVar);
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}
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}
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// Handle all constant strings with duplicate definitions
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for(String str : constantStringMap.keySet()) {
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List<ConstantVar> constantVars = constantStringMap.get(str);
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if(constantVars.size()>1) {
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// Found duplicate constant strings
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modified |= handleDuplicateConstantString(constantVars);
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}
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}
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return modified;
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}
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/**
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* Handle duplicate constants strings with identical values
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* @param constantVars The constant strings with identical values
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* @return true if any optimization was performed
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*/
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private boolean handleDuplicateConstantString(List<ConstantVar> constantVars) {
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boolean modified = false;
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// Look for a constant in the root scope
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ConstantVar rootConstant = null;
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for(ConstantVar constantVar : constantVars) {
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if(constantVar.getScope().getRef().equals(ScopeRef.ROOT)) {
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rootConstant = constantVar;
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break;
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}
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}
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if(rootConstant!=null) {
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// Modify all other constants to be references to the root constant
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for(ConstantVar constantVar : constantVars) {
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if(!constantVar.equals(rootConstant)) {
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constantVar.setValue(new ConstantRef(rootConstant));
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modified = true;
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}
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}
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}
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return modified;
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}
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}
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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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AsmFragmentTemplateUsages.logUsages(log, false, false, false, false, false, false);
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}
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}
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@Test
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public void testStringConstConsolidation() throws IOException, URISyntaxException {
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compileAndCompare("string-const-consolidation");
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}
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@Test
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@Test
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public void testCommentsBlock() throws IOException, URISyntaxException {
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public void testCommentsBlock() throws IOException, URISyntaxException {
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compileAndCompare("test-comments-block");
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compileAndCompare("test-comments-block");
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17
src/test/kc/string-const-consolidation.kc
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17
src/test/kc/string-const-consolidation.kc
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@ -0,0 +1,17 @@
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// Tests that identical strings are consolidated
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byte[] rex1 = "rex@";
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byte* screen = $400;
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void main() {
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byte[] rex2 = rex1;
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print(rex1);
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print(rex2);
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print("rex@");
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}
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void print(byte* string) {
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while(*string!='@') {
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*screen++ = *string++;
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}
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}
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43
src/test/ref/string-const-consolidation.asm
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43
src/test/ref/string-const-consolidation.asm
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@ -0,0 +1,43 @@
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// Tests that identical strings are consolidated
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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 = 2
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main: {
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lda #<$400
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sta screen
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lda #>$400
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sta screen+1
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jsr print
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jsr print
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jsr print
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rts
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}
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// print(byte* zeropage(4) string)
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print: {
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.label string = 4
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lda #<rex1
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sta string
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lda #>rex1
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sta string+1
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b1:
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ldy #0
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lda (string),y
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cmp #'@'
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bne b2
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rts
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b2:
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ldy #0
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lda (string),y
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sta (screen),y
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inc screen
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bne !+
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inc screen+1
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!:
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inc string
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bne !+
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inc string+1
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!:
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jmp b1
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}
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rex1: .text "rex@"
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40
src/test/ref/string-const-consolidation.cfg
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40
src/test/ref/string-const-consolidation.cfg
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@ -0,0 +1,40 @@
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@begin: scope:[] from
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[0] phi()
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to:@2
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@2: 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 @2
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[3] phi()
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main: scope:[main] from @2
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[4] phi()
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[5] call print
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to:main::@1
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main::@1: scope:[main] from main
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[6] phi()
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[7] call print
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to:main::@2
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main::@2: scope:[main] from main::@1
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[8] phi()
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[9] call print
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to:main::@return
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main::@return: scope:[main] from main::@2
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[10] return
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to:@return
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print: scope:[print] from main main::@1 main::@2
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[11] (byte*) screen#18 ← phi( main/((byte*))(word/signed word/dword/signed dword) 1024 main::@1/(byte*) screen#12 main::@2/(byte*) screen#12 )
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to:print::@1
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print::@1: scope:[print] from print print::@2
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[12] (byte*) screen#12 ← phi( print/(byte*) screen#18 print::@2/(byte*) screen#5 )
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[12] (byte*) print::string#4 ← phi( print/(const byte[]) rex1#0 print::@2/(byte*) print::string#3 )
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[13] if(*((byte*) print::string#4)!=(byte) '@') goto print::@2
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to:print::@return
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print::@return: scope:[print] from print::@1
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[14] return
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to:@return
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print::@2: scope:[print] from print::@1
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[15] *((byte*) screen#12) ← *((byte*) print::string#4)
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[16] (byte*) screen#5 ← ++ (byte*) screen#12
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[17] (byte*) print::string#3 ← ++ (byte*) print::string#4
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to:print::@1
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636
src/test/ref/string-const-consolidation.log
Normal file
636
src/test/ref/string-const-consolidation.log
Normal file
@ -0,0 +1,636 @@
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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(byte[]) rex1#0 ← (const string) $0
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(byte*) screen#0 ← ((byte*)) (word/signed word/dword/signed dword) 1024
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to:@2
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main: scope:[main] from @2
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(byte*) screen#15 ← phi( @2/(byte*) screen#17 )
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(byte[]) main::rex2#0 ← (byte[]) rex1#0
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(byte*) print::string#0 ← (byte[]) rex1#0
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call print
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to:main::@1
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main::@1: scope:[main] from main
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(byte*) screen#8 ← phi( main/(byte*) screen#6 )
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(byte*) screen#1 ← (byte*) screen#8
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(byte*) print::string#1 ← (byte[]) main::rex2#0
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call print
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to:main::@2
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main::@2: scope:[main] from main::@1
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(byte*) screen#9 ← phi( main::@1/(byte*) screen#6 )
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(byte*) screen#2 ← (byte*) screen#9
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(byte*) print::string#2 ← (const string) main::string
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call print
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to:main::@3
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main::@3: scope:[main] from main::@2
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(byte*) screen#10 ← phi( main::@2/(byte*) screen#6 )
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(byte*) screen#3 ← (byte*) screen#10
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to:main::@return
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main::@return: scope:[main] from main::@3
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(byte*) screen#11 ← phi( main::@3/(byte*) screen#3 )
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(byte*) screen#4 ← (byte*) screen#11
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return
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to:@return
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print: scope:[print] from main main::@1 main::@2
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(byte*) screen#18 ← phi( main/(byte*) screen#15 main::@1/(byte*) screen#1 main::@2/(byte*) screen#2 )
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(byte*) print::string#6 ← phi( main/(byte*) print::string#0 main::@1/(byte*) print::string#1 main::@2/(byte*) print::string#2 )
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to:print::@1
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print::@1: scope:[print] from print print::@2
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(byte*) screen#16 ← phi( print/(byte*) screen#18 print::@2/(byte*) screen#5 )
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(byte*) print::string#4 ← phi( print/(byte*) print::string#6 print::@2/(byte*) print::string#3 )
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(bool~) print::$0 ← *((byte*) print::string#4) != (byte) '@'
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if((bool~) print::$0) goto print::@2
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to:print::@return
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print::@2: scope:[print] from print::@1
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(byte*) screen#12 ← phi( print::@1/(byte*) screen#16 )
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(byte*) print::string#5 ← phi( print::@1/(byte*) print::string#4 )
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*((byte*) screen#12) ← *((byte*) print::string#5)
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(byte*) screen#5 ← ++ (byte*) screen#12
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(byte*) print::string#3 ← ++ (byte*) print::string#5
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to:print::@1
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print::@return: scope:[print] from print::@1
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(byte*) screen#13 ← phi( print::@1/(byte*) screen#16 )
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(byte*) screen#6 ← (byte*) screen#13
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return
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to:@return
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@2: scope:[] from @begin
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(byte*) screen#17 ← phi( @begin/(byte*) screen#0 )
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call main
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to:@3
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@3: scope:[] from @2
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(byte*) screen#14 ← phi( @2/(byte*) screen#4 )
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(byte*) screen#7 ← (byte*) screen#14
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to:@end
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@end: scope:[] from @3
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SYMBOL TABLE SSA
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(const string) $0 = (string) "rex@"
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(label) @2
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(label) @3
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(label) @begin
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(label) @end
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(void()) main()
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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::rex2
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(byte[]) main::rex2#0
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(const string) main::string = (string) "rex@"
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(void()) print((byte*) print::string)
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(bool~) print::$0
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(label) print::@1
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(label) print::@2
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(label) print::@return
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(byte*) print::string
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(byte*) print::string#0
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(byte*) print::string#1
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(byte*) print::string#2
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(byte*) print::string#3
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(byte*) print::string#4
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(byte*) print::string#5
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(byte*) print::string#6
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(byte[]) rex1
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(byte[]) rex1#0
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(byte*) screen
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(byte*) screen#0
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(byte*) screen#1
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(byte*) screen#10
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(byte*) screen#11
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(byte*) screen#12
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(byte*) screen#13
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(byte*) screen#14
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(byte*) screen#15
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(byte*) screen#16
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(byte*) screen#17
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(byte*) screen#18
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(byte*) screen#2
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(byte*) screen#3
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(byte*) screen#4
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(byte*) screen#5
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(byte*) screen#6
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(byte*) screen#7
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(byte*) screen#8
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(byte*) screen#9
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Alias (byte*) screen#1 = (byte*) screen#8
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Alias (byte*) screen#2 = (byte*) screen#9
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Alias (byte*) screen#10 = (byte*) screen#3 (byte*) screen#11 (byte*) screen#4
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Alias (byte*) print::string#4 = (byte*) print::string#5
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Alias (byte*) screen#12 = (byte*) screen#16 (byte*) screen#13 (byte*) screen#6
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Alias (byte*) screen#0 = (byte*) screen#17
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Alias (byte*) screen#14 = (byte*) screen#7
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Successful SSA optimization Pass2AliasElimination
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Redundant Phi (byte*) screen#15 (byte*) screen#0
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Redundant Phi (byte*) screen#1 (byte*) screen#12
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Redundant Phi (byte*) screen#2 (byte*) screen#12
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Redundant Phi (byte*) screen#10 (byte*) screen#12
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Redundant Phi (byte*) screen#14 (byte*) screen#10
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Successful SSA optimization Pass2RedundantPhiElimination
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Simple Condition (bool~) print::$0 [22] if(*((byte*) print::string#4)!=(byte) '@') goto print::@2
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const byte[]) rex1#0 = $0
|
||||||
|
Constant (const byte*) screen#0 = ((byte*))1024
|
||||||
|
Constant (const byte*) print::string#2 = main::string
|
||||||
|
Successful SSA optimization Pass2ConstantIdentification
|
||||||
|
Constant (const byte[]) main::rex2#0 = rex1#0
|
||||||
|
Constant (const byte*) print::string#0 = rex1#0
|
||||||
|
Successful SSA optimization Pass2ConstantIdentification
|
||||||
|
Constant (const byte*) print::string#1 = main::rex2#0
|
||||||
|
Successful SSA optimization Pass2ConstantIdentification
|
||||||
|
Successful SSA optimization Pass2ConstantStringConsolidation
|
||||||
|
Culled Empty Block (label) main::@3
|
||||||
|
Culled Empty Block (label) @3
|
||||||
|
Successful SSA optimization Pass2CullEmptyBlocks
|
||||||
|
Inlining constant with var siblings (const byte*) print::string#2
|
||||||
|
Inlining constant with var siblings (const byte*) print::string#0
|
||||||
|
Inlining constant with var siblings (const byte*) print::string#1
|
||||||
|
Inlining constant with var siblings (const byte*) screen#0
|
||||||
|
Constant inlined print::string#0 = (const byte[]) rex1#0
|
||||||
|
Constant inlined print::string#1 = (const byte[]) rex1#0
|
||||||
|
Constant inlined $0 = (const byte[]) rex1#0
|
||||||
|
Constant inlined print::string#2 = (const string) main::string
|
||||||
|
Constant inlined main::rex2#0 = (const byte[]) rex1#0
|
||||||
|
Constant inlined screen#0 = ((byte*))(word/signed word/dword/signed dword) 1024
|
||||||
|
Successful SSA optimization Pass2ConstantInlining
|
||||||
|
Successful SSA optimization Pass2ConstantStringConsolidation
|
||||||
|
Constant inlined main::string = (const byte[]) rex1#0
|
||||||
|
Successful SSA optimization Pass2ConstantInlining
|
||||||
|
Identical Phi Values (byte*) print::string#6 (const byte[]) rex1#0
|
||||||
|
Successful SSA optimization Pass2IdenticalPhiElimination
|
||||||
|
Adding NOP phi() at start of @begin
|
||||||
|
Adding NOP phi() at start of @2
|
||||||
|
Adding NOP phi() at start of @end
|
||||||
|
Adding NOP phi() at start of main
|
||||||
|
CALL GRAPH
|
||||||
|
Calls in [] to main:2
|
||||||
|
Calls in [main] to print:5 print:7 print:9
|
||||||
|
|
||||||
|
Created 3 initial phi equivalence classes
|
||||||
|
Coalesced [6] screen#19 ← screen#12
|
||||||
|
Coalesced (already) [8] screen#20 ← screen#12
|
||||||
|
Coalesced (already) [12] screen#21 ← screen#18
|
||||||
|
Coalesced [19] print::string#7 ← print::string#3
|
||||||
|
Coalesced [20] screen#22 ← screen#5
|
||||||
|
Coalesced down to 2 phi equivalence classes
|
||||||
|
Adding NOP phi() at start of @begin
|
||||||
|
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::@1
|
||||||
|
Adding NOP phi() at start of main::@2
|
||||||
|
|
||||||
|
FINAL CONTROL FLOW GRAPH
|
||||||
|
@begin: scope:[] from
|
||||||
|
[0] phi()
|
||||||
|
to:@2
|
||||||
|
@2: scope:[] from @begin
|
||||||
|
[1] phi()
|
||||||
|
[2] call main
|
||||||
|
to:@end
|
||||||
|
@end: scope:[] from @2
|
||||||
|
[3] phi()
|
||||||
|
main: scope:[main] from @2
|
||||||
|
[4] phi()
|
||||||
|
[5] call print
|
||||||
|
to:main::@1
|
||||||
|
main::@1: scope:[main] from main
|
||||||
|
[6] phi()
|
||||||
|
[7] call print
|
||||||
|
to:main::@2
|
||||||
|
main::@2: scope:[main] from main::@1
|
||||||
|
[8] phi()
|
||||||
|
[9] call print
|
||||||
|
to:main::@return
|
||||||
|
main::@return: scope:[main] from main::@2
|
||||||
|
[10] return
|
||||||
|
to:@return
|
||||||
|
print: scope:[print] from main main::@1 main::@2
|
||||||
|
[11] (byte*) screen#18 ← phi( main/((byte*))(word/signed word/dword/signed dword) 1024 main::@1/(byte*) screen#12 main::@2/(byte*) screen#12 )
|
||||||
|
to:print::@1
|
||||||
|
print::@1: scope:[print] from print print::@2
|
||||||
|
[12] (byte*) screen#12 ← phi( print/(byte*) screen#18 print::@2/(byte*) screen#5 )
|
||||||
|
[12] (byte*) print::string#4 ← phi( print/(const byte[]) rex1#0 print::@2/(byte*) print::string#3 )
|
||||||
|
[13] if(*((byte*) print::string#4)!=(byte) '@') goto print::@2
|
||||||
|
to:print::@return
|
||||||
|
print::@return: scope:[print] from print::@1
|
||||||
|
[14] return
|
||||||
|
to:@return
|
||||||
|
print::@2: scope:[print] from print::@1
|
||||||
|
[15] *((byte*) screen#12) ← *((byte*) print::string#4)
|
||||||
|
[16] (byte*) screen#5 ← ++ (byte*) screen#12
|
||||||
|
[17] (byte*) print::string#3 ← ++ (byte*) print::string#4
|
||||||
|
to:print::@1
|
||||||
|
|
||||||
|
|
||||||
|
VARIABLE REGISTER WEIGHTS
|
||||||
|
(void()) main()
|
||||||
|
(byte[]) main::rex2
|
||||||
|
(void()) print((byte*) print::string)
|
||||||
|
(byte*) print::string
|
||||||
|
(byte*) print::string#3 22.0
|
||||||
|
(byte*) print::string#4 11.0
|
||||||
|
(byte[]) rex1
|
||||||
|
(byte*) screen
|
||||||
|
(byte*) screen#12 4.875
|
||||||
|
(byte*) screen#18 6.0
|
||||||
|
(byte*) screen#5 11.0
|
||||||
|
|
||||||
|
Initial phi equivalence classes
|
||||||
|
[ screen#18 screen#12 screen#5 ]
|
||||||
|
[ print::string#4 print::string#3 ]
|
||||||
|
Complete equivalence classes
|
||||||
|
[ screen#18 screen#12 screen#5 ]
|
||||||
|
[ print::string#4 print::string#3 ]
|
||||||
|
Allocated zp ZP_WORD:2 [ screen#18 screen#12 screen#5 ]
|
||||||
|
Allocated zp ZP_WORD:4 [ print::string#4 print::string#3 ]
|
||||||
|
|
||||||
|
INITIAL ASM
|
||||||
|
//SEG0 File Comments
|
||||||
|
// Tests that identical strings are consolidated
|
||||||
|
//SEG1 Basic Upstart
|
||||||
|
.pc = $801 "Basic"
|
||||||
|
:BasicUpstart(bbegin)
|
||||||
|
.pc = $80d "Program"
|
||||||
|
//SEG2 Global Constants & labels
|
||||||
|
.label screen = 2
|
||||||
|
//SEG3 @begin
|
||||||
|
bbegin:
|
||||||
|
//SEG4 [1] phi from @begin to @2 [phi:@begin->@2]
|
||||||
|
b2_from_bbegin:
|
||||||
|
jmp b2
|
||||||
|
//SEG5 @2
|
||||||
|
b2:
|
||||||
|
//SEG6 [2] call main
|
||||||
|
//SEG7 [4] phi from @2 to main [phi:@2->main]
|
||||||
|
main_from_b2:
|
||||||
|
jsr main
|
||||||
|
//SEG8 [3] phi from @2 to @end [phi:@2->@end]
|
||||||
|
bend_from_b2:
|
||||||
|
jmp bend
|
||||||
|
//SEG9 @end
|
||||||
|
bend:
|
||||||
|
//SEG10 main
|
||||||
|
main: {
|
||||||
|
//SEG11 [5] call print
|
||||||
|
//SEG12 [11] phi from main to print [phi:main->print]
|
||||||
|
print_from_main:
|
||||||
|
//SEG13 [11] phi (byte*) screen#18 = ((byte*))(word/signed word/dword/signed dword) 1024 [phi:main->print#0] -- pbuz1=pbuc1
|
||||||
|
lda #<$400
|
||||||
|
sta screen
|
||||||
|
lda #>$400
|
||||||
|
sta screen+1
|
||||||
|
jsr print
|
||||||
|
//SEG14 [6] phi from main to main::@1 [phi:main->main::@1]
|
||||||
|
b1_from_main:
|
||||||
|
jmp b1
|
||||||
|
//SEG15 main::@1
|
||||||
|
b1:
|
||||||
|
//SEG16 [7] call print
|
||||||
|
//SEG17 [11] phi from main::@1 to print [phi:main::@1->print]
|
||||||
|
print_from_b1:
|
||||||
|
//SEG18 [11] phi (byte*) screen#18 = (byte*) screen#12 [phi:main::@1->print#0] -- register_copy
|
||||||
|
jsr print
|
||||||
|
//SEG19 [8] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
|
||||||
|
b2_from_b1:
|
||||||
|
jmp b2
|
||||||
|
//SEG20 main::@2
|
||||||
|
b2:
|
||||||
|
//SEG21 [9] call print
|
||||||
|
//SEG22 [11] phi from main::@2 to print [phi:main::@2->print]
|
||||||
|
print_from_b2:
|
||||||
|
//SEG23 [11] phi (byte*) screen#18 = (byte*) screen#12 [phi:main::@2->print#0] -- register_copy
|
||||||
|
jsr print
|
||||||
|
jmp breturn
|
||||||
|
//SEG24 main::@return
|
||||||
|
breturn:
|
||||||
|
//SEG25 [10] return
|
||||||
|
rts
|
||||||
|
}
|
||||||
|
//SEG26 print
|
||||||
|
// print(byte* zeropage(4) string)
|
||||||
|
print: {
|
||||||
|
.label string = 4
|
||||||
|
//SEG27 [12] phi from print to print::@1 [phi:print->print::@1]
|
||||||
|
b1_from_print:
|
||||||
|
//SEG28 [12] phi (byte*) screen#12 = (byte*) screen#18 [phi:print->print::@1#0] -- register_copy
|
||||||
|
//SEG29 [12] phi (byte*) print::string#4 = (const byte[]) rex1#0 [phi:print->print::@1#1] -- pbuz1=pbuc1
|
||||||
|
lda #<rex1
|
||||||
|
sta string
|
||||||
|
lda #>rex1
|
||||||
|
sta string+1
|
||||||
|
jmp b1
|
||||||
|
//SEG30 print::@1
|
||||||
|
b1:
|
||||||
|
//SEG31 [13] if(*((byte*) print::string#4)!=(byte) '@') goto print::@2 -- _deref_pbuz1_neq_vbuc1_then_la1
|
||||||
|
ldy #0
|
||||||
|
lda (string),y
|
||||||
|
cmp #'@'
|
||||||
|
bne b2
|
||||||
|
jmp breturn
|
||||||
|
//SEG32 print::@return
|
||||||
|
breturn:
|
||||||
|
//SEG33 [14] return
|
||||||
|
rts
|
||||||
|
//SEG34 print::@2
|
||||||
|
b2:
|
||||||
|
//SEG35 [15] *((byte*) screen#12) ← *((byte*) print::string#4) -- _deref_pbuz1=_deref_pbuz2
|
||||||
|
ldy #0
|
||||||
|
lda (string),y
|
||||||
|
ldy #0
|
||||||
|
sta (screen),y
|
||||||
|
//SEG36 [16] (byte*) screen#5 ← ++ (byte*) screen#12 -- pbuz1=_inc_pbuz1
|
||||||
|
inc screen
|
||||||
|
bne !+
|
||||||
|
inc screen+1
|
||||||
|
!:
|
||||||
|
//SEG37 [17] (byte*) print::string#3 ← ++ (byte*) print::string#4 -- pbuz1=_inc_pbuz1
|
||||||
|
inc string
|
||||||
|
bne !+
|
||||||
|
inc string+1
|
||||||
|
!:
|
||||||
|
//SEG38 [12] phi from print::@2 to print::@1 [phi:print::@2->print::@1]
|
||||||
|
b1_from_b2:
|
||||||
|
//SEG39 [12] phi (byte*) screen#12 = (byte*) screen#5 [phi:print::@2->print::@1#0] -- register_copy
|
||||||
|
//SEG40 [12] phi (byte*) print::string#4 = (byte*) print::string#3 [phi:print::@2->print::@1#1] -- register_copy
|
||||||
|
jmp b1
|
||||||
|
}
|
||||||
|
rex1: .text "rex@"
|
||||||
|
|
||||||
|
REGISTER UPLIFT POTENTIAL REGISTERS
|
||||||
|
Statement [13] if(*((byte*) print::string#4)!=(byte) '@') goto print::@2 [ screen#12 print::string#4 ] ( main:2::print:5 [ screen#12 print::string#4 ] main:2::print:7 [ screen#12 print::string#4 ] main:2::print:9 [ screen#12 print::string#4 ] ) always clobbers reg byte a reg byte y
|
||||||
|
Statement [15] *((byte*) screen#12) ← *((byte*) print::string#4) [ screen#12 print::string#4 ] ( main:2::print:5 [ screen#12 print::string#4 ] main:2::print:7 [ screen#12 print::string#4 ] main:2::print:9 [ screen#12 print::string#4 ] ) always clobbers reg byte a reg byte y
|
||||||
|
Potential registers zp ZP_WORD:2 [ screen#18 screen#12 screen#5 ] : zp ZP_WORD:2 ,
|
||||||
|
Potential registers zp ZP_WORD:4 [ print::string#4 print::string#3 ] : zp ZP_WORD:4 ,
|
||||||
|
|
||||||
|
REGISTER UPLIFT SCOPES
|
||||||
|
Uplift Scope [print] 33: zp ZP_WORD:4 [ print::string#4 print::string#3 ]
|
||||||
|
Uplift Scope [] 21.88: zp ZP_WORD:2 [ screen#18 screen#12 screen#5 ]
|
||||||
|
Uplift Scope [main]
|
||||||
|
|
||||||
|
Uplifting [print] best 776 combination zp ZP_WORD:4 [ print::string#4 print::string#3 ]
|
||||||
|
Uplifting [] best 776 combination zp ZP_WORD:2 [ screen#18 screen#12 screen#5 ]
|
||||||
|
Uplifting [main] best 776 combination
|
||||||
|
|
||||||
|
ASSEMBLER BEFORE OPTIMIZATION
|
||||||
|
//SEG0 File Comments
|
||||||
|
// Tests that identical strings are consolidated
|
||||||
|
//SEG1 Basic Upstart
|
||||||
|
.pc = $801 "Basic"
|
||||||
|
:BasicUpstart(bbegin)
|
||||||
|
.pc = $80d "Program"
|
||||||
|
//SEG2 Global Constants & labels
|
||||||
|
.label screen = 2
|
||||||
|
//SEG3 @begin
|
||||||
|
bbegin:
|
||||||
|
//SEG4 [1] phi from @begin to @2 [phi:@begin->@2]
|
||||||
|
b2_from_bbegin:
|
||||||
|
jmp b2
|
||||||
|
//SEG5 @2
|
||||||
|
b2:
|
||||||
|
//SEG6 [2] call main
|
||||||
|
//SEG7 [4] phi from @2 to main [phi:@2->main]
|
||||||
|
main_from_b2:
|
||||||
|
jsr main
|
||||||
|
//SEG8 [3] phi from @2 to @end [phi:@2->@end]
|
||||||
|
bend_from_b2:
|
||||||
|
jmp bend
|
||||||
|
//SEG9 @end
|
||||||
|
bend:
|
||||||
|
//SEG10 main
|
||||||
|
main: {
|
||||||
|
//SEG11 [5] call print
|
||||||
|
//SEG12 [11] phi from main to print [phi:main->print]
|
||||||
|
print_from_main:
|
||||||
|
//SEG13 [11] phi (byte*) screen#18 = ((byte*))(word/signed word/dword/signed dword) 1024 [phi:main->print#0] -- pbuz1=pbuc1
|
||||||
|
lda #<$400
|
||||||
|
sta screen
|
||||||
|
lda #>$400
|
||||||
|
sta screen+1
|
||||||
|
jsr print
|
||||||
|
//SEG14 [6] phi from main to main::@1 [phi:main->main::@1]
|
||||||
|
b1_from_main:
|
||||||
|
jmp b1
|
||||||
|
//SEG15 main::@1
|
||||||
|
b1:
|
||||||
|
//SEG16 [7] call print
|
||||||
|
//SEG17 [11] phi from main::@1 to print [phi:main::@1->print]
|
||||||
|
print_from_b1:
|
||||||
|
//SEG18 [11] phi (byte*) screen#18 = (byte*) screen#12 [phi:main::@1->print#0] -- register_copy
|
||||||
|
jsr print
|
||||||
|
//SEG19 [8] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
|
||||||
|
b2_from_b1:
|
||||||
|
jmp b2
|
||||||
|
//SEG20 main::@2
|
||||||
|
b2:
|
||||||
|
//SEG21 [9] call print
|
||||||
|
//SEG22 [11] phi from main::@2 to print [phi:main::@2->print]
|
||||||
|
print_from_b2:
|
||||||
|
//SEG23 [11] phi (byte*) screen#18 = (byte*) screen#12 [phi:main::@2->print#0] -- register_copy
|
||||||
|
jsr print
|
||||||
|
jmp breturn
|
||||||
|
//SEG24 main::@return
|
||||||
|
breturn:
|
||||||
|
//SEG25 [10] return
|
||||||
|
rts
|
||||||
|
}
|
||||||
|
//SEG26 print
|
||||||
|
// print(byte* zeropage(4) string)
|
||||||
|
print: {
|
||||||
|
.label string = 4
|
||||||
|
//SEG27 [12] phi from print to print::@1 [phi:print->print::@1]
|
||||||
|
b1_from_print:
|
||||||
|
//SEG28 [12] phi (byte*) screen#12 = (byte*) screen#18 [phi:print->print::@1#0] -- register_copy
|
||||||
|
//SEG29 [12] phi (byte*) print::string#4 = (const byte[]) rex1#0 [phi:print->print::@1#1] -- pbuz1=pbuc1
|
||||||
|
lda #<rex1
|
||||||
|
sta string
|
||||||
|
lda #>rex1
|
||||||
|
sta string+1
|
||||||
|
jmp b1
|
||||||
|
//SEG30 print::@1
|
||||||
|
b1:
|
||||||
|
//SEG31 [13] if(*((byte*) print::string#4)!=(byte) '@') goto print::@2 -- _deref_pbuz1_neq_vbuc1_then_la1
|
||||||
|
ldy #0
|
||||||
|
lda (string),y
|
||||||
|
cmp #'@'
|
||||||
|
bne b2
|
||||||
|
jmp breturn
|
||||||
|
//SEG32 print::@return
|
||||||
|
breturn:
|
||||||
|
//SEG33 [14] return
|
||||||
|
rts
|
||||||
|
//SEG34 print::@2
|
||||||
|
b2:
|
||||||
|
//SEG35 [15] *((byte*) screen#12) ← *((byte*) print::string#4) -- _deref_pbuz1=_deref_pbuz2
|
||||||
|
ldy #0
|
||||||
|
lda (string),y
|
||||||
|
ldy #0
|
||||||
|
sta (screen),y
|
||||||
|
//SEG36 [16] (byte*) screen#5 ← ++ (byte*) screen#12 -- pbuz1=_inc_pbuz1
|
||||||
|
inc screen
|
||||||
|
bne !+
|
||||||
|
inc screen+1
|
||||||
|
!:
|
||||||
|
//SEG37 [17] (byte*) print::string#3 ← ++ (byte*) print::string#4 -- pbuz1=_inc_pbuz1
|
||||||
|
inc string
|
||||||
|
bne !+
|
||||||
|
inc string+1
|
||||||
|
!:
|
||||||
|
//SEG38 [12] phi from print::@2 to print::@1 [phi:print::@2->print::@1]
|
||||||
|
b1_from_b2:
|
||||||
|
//SEG39 [12] phi (byte*) screen#12 = (byte*) screen#5 [phi:print::@2->print::@1#0] -- register_copy
|
||||||
|
//SEG40 [12] phi (byte*) print::string#4 = (byte*) print::string#3 [phi:print::@2->print::@1#1] -- register_copy
|
||||||
|
jmp b1
|
||||||
|
}
|
||||||
|
rex1: .text "rex@"
|
||||||
|
|
||||||
|
ASSEMBLER OPTIMIZATIONS
|
||||||
|
Removing instruction jmp b2
|
||||||
|
Removing instruction jmp bend
|
||||||
|
Removing instruction jmp b1
|
||||||
|
Removing instruction jmp b2
|
||||||
|
Removing instruction jmp breturn
|
||||||
|
Removing instruction jmp b1
|
||||||
|
Removing instruction jmp breturn
|
||||||
|
Succesful ASM optimization Pass5NextJumpElimination
|
||||||
|
Removing instruction ldy #0
|
||||||
|
Succesful ASM optimization Pass5UnnecesaryLoadElimination
|
||||||
|
Removing instruction b2_from_bbegin:
|
||||||
|
Removing instruction b2:
|
||||||
|
Removing instruction main_from_b2:
|
||||||
|
Removing instruction bend_from_b2:
|
||||||
|
Removing instruction b1_from_main:
|
||||||
|
Removing instruction print_from_b1:
|
||||||
|
Removing instruction b2_from_b1:
|
||||||
|
Removing instruction print_from_b2:
|
||||||
|
Succesful ASM optimization Pass5RedundantLabelElimination
|
||||||
|
Removing instruction bend:
|
||||||
|
Removing instruction print_from_main:
|
||||||
|
Removing instruction b1:
|
||||||
|
Removing instruction b2:
|
||||||
|
Removing instruction breturn:
|
||||||
|
Removing instruction b1_from_print:
|
||||||
|
Removing instruction breturn:
|
||||||
|
Removing instruction b1_from_b2:
|
||||||
|
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) @2
|
||||||
|
(label) @begin
|
||||||
|
(label) @end
|
||||||
|
(void()) main()
|
||||||
|
(label) main::@1
|
||||||
|
(label) main::@2
|
||||||
|
(label) main::@return
|
||||||
|
(byte[]) main::rex2
|
||||||
|
(void()) print((byte*) print::string)
|
||||||
|
(label) print::@1
|
||||||
|
(label) print::@2
|
||||||
|
(label) print::@return
|
||||||
|
(byte*) print::string
|
||||||
|
(byte*) print::string#3 string zp ZP_WORD:4 22.0
|
||||||
|
(byte*) print::string#4 string zp ZP_WORD:4 11.0
|
||||||
|
(byte[]) rex1
|
||||||
|
(const byte[]) rex1#0 rex1 = (string) "rex@"
|
||||||
|
(byte*) screen
|
||||||
|
(byte*) screen#12 screen zp ZP_WORD:2 4.875
|
||||||
|
(byte*) screen#18 screen zp ZP_WORD:2 6.0
|
||||||
|
(byte*) screen#5 screen zp ZP_WORD:2 11.0
|
||||||
|
|
||||||
|
zp ZP_WORD:2 [ screen#18 screen#12 screen#5 ]
|
||||||
|
zp ZP_WORD:4 [ print::string#4 print::string#3 ]
|
||||||
|
|
||||||
|
|
||||||
|
FINAL ASSEMBLER
|
||||||
|
Score: 675
|
||||||
|
|
||||||
|
//SEG0 File Comments
|
||||||
|
// Tests that identical strings are consolidated
|
||||||
|
//SEG1 Basic Upstart
|
||||||
|
.pc = $801 "Basic"
|
||||||
|
:BasicUpstart(main)
|
||||||
|
.pc = $80d "Program"
|
||||||
|
//SEG2 Global Constants & labels
|
||||||
|
.label screen = 2
|
||||||
|
//SEG3 @begin
|
||||||
|
//SEG4 [1] phi from @begin to @2 [phi:@begin->@2]
|
||||||
|
//SEG5 @2
|
||||||
|
//SEG6 [2] call main
|
||||||
|
//SEG7 [4] phi from @2 to main [phi:@2->main]
|
||||||
|
//SEG8 [3] phi from @2 to @end [phi:@2->@end]
|
||||||
|
//SEG9 @end
|
||||||
|
//SEG10 main
|
||||||
|
main: {
|
||||||
|
//SEG11 [5] call print
|
||||||
|
//SEG12 [11] phi from main to print [phi:main->print]
|
||||||
|
//SEG13 [11] phi (byte*) screen#18 = ((byte*))(word/signed word/dword/signed dword) 1024 [phi:main->print#0] -- pbuz1=pbuc1
|
||||||
|
lda #<$400
|
||||||
|
sta screen
|
||||||
|
lda #>$400
|
||||||
|
sta screen+1
|
||||||
|
jsr print
|
||||||
|
//SEG14 [6] phi from main to main::@1 [phi:main->main::@1]
|
||||||
|
//SEG15 main::@1
|
||||||
|
//SEG16 [7] call print
|
||||||
|
//SEG17 [11] phi from main::@1 to print [phi:main::@1->print]
|
||||||
|
//SEG18 [11] phi (byte*) screen#18 = (byte*) screen#12 [phi:main::@1->print#0] -- register_copy
|
||||||
|
jsr print
|
||||||
|
//SEG19 [8] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
|
||||||
|
//SEG20 main::@2
|
||||||
|
//SEG21 [9] call print
|
||||||
|
//SEG22 [11] phi from main::@2 to print [phi:main::@2->print]
|
||||||
|
//SEG23 [11] phi (byte*) screen#18 = (byte*) screen#12 [phi:main::@2->print#0] -- register_copy
|
||||||
|
jsr print
|
||||||
|
//SEG24 main::@return
|
||||||
|
//SEG25 [10] return
|
||||||
|
rts
|
||||||
|
}
|
||||||
|
//SEG26 print
|
||||||
|
// print(byte* zeropage(4) string)
|
||||||
|
print: {
|
||||||
|
.label string = 4
|
||||||
|
//SEG27 [12] phi from print to print::@1 [phi:print->print::@1]
|
||||||
|
//SEG28 [12] phi (byte*) screen#12 = (byte*) screen#18 [phi:print->print::@1#0] -- register_copy
|
||||||
|
//SEG29 [12] phi (byte*) print::string#4 = (const byte[]) rex1#0 [phi:print->print::@1#1] -- pbuz1=pbuc1
|
||||||
|
lda #<rex1
|
||||||
|
sta string
|
||||||
|
lda #>rex1
|
||||||
|
sta string+1
|
||||||
|
//SEG30 print::@1
|
||||||
|
b1:
|
||||||
|
//SEG31 [13] if(*((byte*) print::string#4)!=(byte) '@') goto print::@2 -- _deref_pbuz1_neq_vbuc1_then_la1
|
||||||
|
ldy #0
|
||||||
|
lda (string),y
|
||||||
|
cmp #'@'
|
||||||
|
bne b2
|
||||||
|
//SEG32 print::@return
|
||||||
|
//SEG33 [14] return
|
||||||
|
rts
|
||||||
|
//SEG34 print::@2
|
||||||
|
b2:
|
||||||
|
//SEG35 [15] *((byte*) screen#12) ← *((byte*) print::string#4) -- _deref_pbuz1=_deref_pbuz2
|
||||||
|
ldy #0
|
||||||
|
lda (string),y
|
||||||
|
sta (screen),y
|
||||||
|
//SEG36 [16] (byte*) screen#5 ← ++ (byte*) screen#12 -- pbuz1=_inc_pbuz1
|
||||||
|
inc screen
|
||||||
|
bne !+
|
||||||
|
inc screen+1
|
||||||
|
!:
|
||||||
|
//SEG37 [17] (byte*) print::string#3 ← ++ (byte*) print::string#4 -- pbuz1=_inc_pbuz1
|
||||||
|
inc string
|
||||||
|
bne !+
|
||||||
|
inc string+1
|
||||||
|
!:
|
||||||
|
//SEG38 [12] phi from print::@2 to print::@1 [phi:print::@2->print::@1]
|
||||||
|
//SEG39 [12] phi (byte*) screen#12 = (byte*) screen#5 [phi:print::@2->print::@1#0] -- register_copy
|
||||||
|
//SEG40 [12] phi (byte*) print::string#4 = (byte*) print::string#3 [phi:print::@2->print::@1#1] -- register_copy
|
||||||
|
jmp b1
|
||||||
|
}
|
||||||
|
rex1: .text "rex@"
|
||||||
|
|
||||||
24
src/test/ref/string-const-consolidation.sym
Normal file
24
src/test/ref/string-const-consolidation.sym
Normal file
@ -0,0 +1,24 @@
|
|||||||
|
(label) @2
|
||||||
|
(label) @begin
|
||||||
|
(label) @end
|
||||||
|
(void()) main()
|
||||||
|
(label) main::@1
|
||||||
|
(label) main::@2
|
||||||
|
(label) main::@return
|
||||||
|
(byte[]) main::rex2
|
||||||
|
(void()) print((byte*) print::string)
|
||||||
|
(label) print::@1
|
||||||
|
(label) print::@2
|
||||||
|
(label) print::@return
|
||||||
|
(byte*) print::string
|
||||||
|
(byte*) print::string#3 string zp ZP_WORD:4 22.0
|
||||||
|
(byte*) print::string#4 string zp ZP_WORD:4 11.0
|
||||||
|
(byte[]) rex1
|
||||||
|
(const byte[]) rex1#0 rex1 = (string) "rex@"
|
||||||
|
(byte*) screen
|
||||||
|
(byte*) screen#12 screen zp ZP_WORD:2 4.875
|
||||||
|
(byte*) screen#18 screen zp ZP_WORD:2 6.0
|
||||||
|
(byte*) screen#5 screen zp ZP_WORD:2 11.0
|
||||||
|
|
||||||
|
zp ZP_WORD:2 [ screen#18 screen#12 screen#5 ]
|
||||||
|
zp ZP_WORD:4 [ print::string#4 print::string#3 ]
|
||||||
Loading…
x
Reference in New Issue
Block a user