nightly

Commits

• 0658605: Simplify this slightly. (Troels Henriksen)
• d991625: Remove redundant toStruct. (Troels Henriksen)
• 4f2d5e6: Fix #2222. (Troels Henriksen)

0.25.27

Added

• Improved reverse-mode AD of scan with complicated operators. Work
  by Peter Adema and Sophus Valentin Willumsgaard.

Fixed

• futhark eval: any errors in the provided .fut file would cause a
  "file not found" error message.

• Handling of module-dependent size expressions in type abbreviations
  (#2209).

• A let-bound size would mistakenly be in scope of the bound
  expression (#2210).

• An overzealous floating-point simplification rule.

• Corrected AD of x**y where x==0 (#2216).

• futhark fmt: correct file name in parse errors.

• A bug in the "sink" optimisation pass could cause compiler crashes.

• Compile errors with newer versions of ispc.

0.25.26

Fixed

• Some Windows compatibility quirks (#2200, #2201).

• futhark pkg: fixed parsing of Git timestamps in Z time zone.

• GPU backends did not handle array constants correctly in some cases.

• futhark fmt: do not throw away doc comments for local
  definitions.

• futhark fmt: improve formatting of value specs.

• futhark fmt: add --check option.

0.25.25

Added

• Improvements to futhark fmt.

Fixed

• Sizes that go out of scope due to use of higher order functions will
  now work in more cases by adding existentials. (#2193)

• Tracing inside AD operators with the interpreter now prints values
  properly.

• Compiled and interpreted code now have same treatment of inclusive
  ranges with start==end and negative step size, e.g. 1..0...1
  produces [1] rather than an invalid range error.

• Inconsistent handling of types in lambda lifting (#2197).

• Invalid primal results from vjp2 in interpreter (#2199).

0.25.24

Added

• futhark doc now produces better (and stable) anchor IDs.

• futhark profile now supports multiple JSON files.

• futhark fmt, by William Due and Therese Lyngby.

• Lambdas can now be passed as the last argument to a function application.

Fixed

• Negation of floating-point positive zero now produces a negative
  zero.

• Necessary inlining of functions used inside AD constructs.

• A compile time regression for programs that used higher order
  functions very aggressively.

• Uniqueness bug related to slice simplification.

0.25.23

Added

• Trailing commas are now allowed for arrays, records, and tuples in
  the textual value format and in FutharkScript.

• Faster floating-point atomics with OpenCL backend on AMD and NVIDIA
  GPUs. This affects histogram workloads.

• AD is now supported by the interpreter (thanks to Marcus Jensen).

Fixed

• Some instances of invalid copy removal. (Again.)

• An issue related to entry points with nontrivial sizes in their
  arguments, where the entry points were also used as normal functions
  elsewhere. (#2184)

0.25.22

Added

• futhark script now supports an -f option.

• futhark script now supports the builtin procedure $store.

Removed

Changed

Fixed

• An error in tuning file validation.

• Constant folding for loops that produce floating point results could
  result in different numerical behaviour.

• Compiler crash in memory short circuiting (#2176).

0.25.21

Added

• Logging now prints more GPU information on context initialisation.

• GPU cache size can now be configured (tuning param: default_cache).

• GPU shared memory can now be configured (tuning param: default_shared_memory).

• GPU register capacity can now be configured.

• futhark script now accepts a -b option for producing binary
  output.

Fixed

• Type names for element types of array indexing functions in C
  interface are now often better - although there are still cases
  where you end up with hashed names. (#2172)

• In some cases, GPU failures would not be reported properly if a
  previous failure was pending.

• auto output didn't work if the .fut file did not have any path
  components.

• Improved detection of malformed tuning files.

0.25.20

Added

• Better error message when in-place updates fail at runtime due to a
  shape mismatch.

Fixed

• #[unroll] on an outer loop now no longer causes unrolling of all
  loops nested inside the loop body.

• Obscure issue related to replications of constants in complex
  intrablock kernels.

• Interpreter no longer crashes on attributes in patterns.

• Fixes to array indexing through C API when using GPU backends.

0.25.19

Added

• The compiler now does slightly less aggressive inlining. Use the
  #[inline] attribute if you want to force inlining of some
  function.

• Arrays of opaque types now support indexing through the C API.
  Arrays of records can also be constructed. (#2082)

Fixed

• The opencl backend now always passes
  -cl-fp32-correctly-rounded-divide-sqrt to the kernel compiler, in
  order to match CUDA and HIP behaviour.