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avoid unecessary subtraction in tableswitch

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This commit is contained in:
Joel Dice 2009-03-06 17:11:14 -07:00
parent b5f76d96dc
commit 33ba8d084d
1 changed files with 5 additions and 2 deletions
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7
src/compile.cpp
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@ -3730,9 +3730,12 @@ compile(MyThread* t, Frame* initialFrame, unsigned ip,
saveStateAndCompile(t, frame, defaultIp); saveStateAndCompile(t, frame, defaultIp);
Compiler::Operand* normalizedKey
= (bottom ? c->sub(4, c->constant(bottom), key) : key);
c->jmp(c->load(BytesPerWord, BytesPerWord, c->jmp(c->load(BytesPerWord, BytesPerWord,
c->memory(start, 0, c->sub(4, c->constant(bottom), key), c->memory(start, 0, normalizedKey, BytesPerWord),
BytesPerWord), BytesPerWord)); BytesPerWord));
Compiler::State* state = c->saveState(); Compiler::State* state = c->saveState();