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do not need 'allow dead instructions'

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after copies are collected

(instruction is dead only if all copies are dead)
This commit is contained in:
Svetlana Isakova
2012-12-13 19:36:09 +04:00
parent d778952512
commit 8584a76750
1 changed files with 10 additions and 5 deletions
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compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/PseudocodeImpl.java
+10 -5
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@@ -189,18 +189,23 @@ public class PseudocodeImpl implements Pseudocode {
return deadInstructions; return deadInstructions;
} }
deadInstructions = Lists.newArrayList(); deadInstructions = Lists.newArrayList();
Collection<Instruction> allowedDeadInstructions = collectAllowedDeadInstructions();
for (Instruction instruction : mutableInstructionList) { for (Instruction instruction : mutableInstructionList) {
if (((InstructionImpl)instruction).isDead()) { if (isDead(instruction)) {
if (!allowedDeadInstructions.contains(instruction)) { deadInstructions.add(instruction);
deadInstructions.add(instruction);
}
} }
} }
return deadInstructions; return deadInstructions;
} }
private static boolean isDead(@NotNull Instruction instruction) {
if (!((InstructionImpl)instruction).isDead()) return false;
for (Instruction copy : instruction.getCopies()) {
if (!((InstructionImpl)copy).isDead()) return false;
}
return true;
}
//for tests only //for tests only
@NotNull @NotNull
public List<PseudocodeLabel> getLabels() { public List<PseudocodeLabel> getLabels() {