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a2f5f9eda4
* module/language/cps/cse.scm (compute-equivalent-subexpressions): When
CSE sees a definition like `(cons a b)', it will also record an
"auxiliary definition" for `(car x)', where x is the variable defined
by the cons, whereby calling `(car x)' can reduce to `a' if there is
no intervening effect that clobbers the definitions. However, when
the successor of the cons is a control-flow join, then any variables
defined there have multiple definitions. It's incorrect to add the
aux definition in that case.
* test-suite/tests/compiler.test ("cse auxiliary definitions"): New
test.
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| language | ||
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| rnrs | ||
| scripts | ||
| srfi | ||
| sxml | ||
| system | ||
| texinfo | ||
| web | ||
| Makefile.am | ||
| rnrs.scm | ||
| statprof.scm | ||
| texinfo.scm | ||