| [#248] | project: compiler | priority: low | category: bug | |
|---|---|---|---|---|
| submitter | assigned to | status | date submitted | |
| Nikolay | Nikolay | fixed | 2003-12-03 18:13:38.0 | |
| subject | MSIL backend does not hadnle Switch tree nodes | |||
| code |
Anything that would cause the sequence matcher to generate a Switch tree node. |
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| what happened | The MSIL backend crashes because it doesn't handle Switch tree nodes. The .NET CLR lacks the appropriate switch\ instruction, so this will not be fixed soon. |
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| what expected | Working MSIL backend. | |||
| [back to overview] | ||||
| Burak edited on 2003-12-03 18:40:33.0 |
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I do not like the PatternMatcher or any other phase to be dependent on the backend to use.
A sane way that does the same is make TreeGen.Switch clever enough that it fakes switches with nested if..then..elses. Given that TreeGen.Switch should be the only way to generate switches, this should be fine, although I really think this is the problem of the backend, and not even TreeGen should be polluted (Philippe told me, the interpreter works fine now). |
| Nikolay edited on 2003-12-04 10:26:03.0 |
| Changed the 'subject' and 'what expected' to reflect that this should be fixed in the MSIL backend (and better soon than later). Reassigned it to myself. |
| Nikolay edited on 2003-12-17 16:41:10.0 |
| Fixed. The MSIL backend now unrolls Switch nodes to a multitude of if-else-ifs. |