rust/librustc_trans at 2dbac1fb8ed43cbcd160855803d50a51c38b8cee - rust

History

Ulrik Sverdrup 2dbac1fb8e Add intrinsics for float arithmetic with fast flag enabled

`fast` a.k.a UnsafeAlgebra is the flag for enabling all "unsafe"
(according to llvm) float optimizations.

See LangRef for more information http://llvm.org/docs/LangRef.html#fast-math-flags

Providing these operations with less precise associativity rules (for
example) is useful to numerical applications.

For example, the summation loop:

    let sum = 0.;
    for element in data {
        sum += *element;
    }

Using the default floating point semantics, this loop expresses the
floats must be added in a sequence, one after another. This constraint
is usually completely unintended, and it means that no autovectorization
is possible.

2016-03-18 17:31:41 +01:00

back

Rename middle::ty::ctxt to TyCtxt

2016-03-03 07:37:56 +00:00

save

Refactor rustc_trans::save

2016-03-15 22:50:18 +01:00

trans

Add intrinsics for float arithmetic with fast flag enabled

2016-03-18 17:31:41 +01:00

Cargo.toml

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