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--- !ditz.rubyforge.org,2008-03-06/issue
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title: implement sanity limits for temp regs, constants, and inner funcs
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desc: |-
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The current compiler cannot handle temp reg or const overflows. For instance,
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if a constant number is above 255, it cannot be used with the three operand
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bytecode instructions but must be coerced into a temporary register first.
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The first step is to ensure no overflows occur, i.e. the compiler refuses to
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emit invalid code. Later, better constant / temporary register 8-bit overflow
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handling can be implemented.
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type: :task
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component: duk
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release: v0.2
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reporter: sva <sami.vaarala@poplatek.fi>
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status: :closed
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disposition: :fixed
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creation_time: 2013-02-26 12:47:20.878984 Z
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references: []
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id: 6f72bf0fef73cc5c4e4578ef439d0d2ae730d2a0
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log_events:
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- - 2013-02-26 12:48:13.690994 Z
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- sva <sami.vaarala@poplatek.fi>
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- created
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- |-
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Before this fix, test-dev-bug-const-overflow.js caused a valgrind caused
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a (justified) valgrind whine, when constant numbers went over 8 bits and
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caused invalid opcodes to be emitted (constant accesses are then confused
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with register accesses).
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- - 2013-02-26 14:03:39.192399 Z
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- sva <sami.vaarala@poplatek.fi>
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- closed with disposition fixed
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- ""
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