code in an "else" branch that is never executed still does influence runtime (Vectorizer?)
the following code contains
if foo then ... else barwhere foo evaluates to True. If I replace this by
if foo then ... else undefinedthen execution gets faster drastically.
The code uses Data.Vector.Unboxed.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.0.3 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |