gf-core.git/src/runtime/haskell/PGF/ByteCode.hs, branch optimize

Fixes for GHC 8.4.1 compatibility

2018-04-18T17:18:10+00:00

* In GHC 8.4.1, the operator <> has become a method of the Semigroup class and is exported from the Prelude. This is unfortunate, since <> is also exported from the standard library module Text.PrettyPrint, so in any module that defines a pretty printer, there is likely to be an ambiguity. This affects ~18 modules in GF. Solution: import Prelude hiding (<>) This works also in older versions of GHC, since GHC does't complain if you hide something that doesn't exists. * In GHC 8.4.1, Semigroup has become a superclass of Monoid. This means that anywhere you define an instance of the Monoid class you also have to define an instance in the Semigroup class. This affects Data.Binary.Builder in GF. Solution: conditionally define a Semigroup instance if compiling with base>=4.11 (ghc>=8.4.1)

now (+) in the abstract syntax works, i.e. it knows how to deal with partial sums

2014-10-31T14:16:11+00:00

a more efficient tail call by using the new TUCK instruction

2014-10-30T13:09:50+00:00

an explicit SAVE instruction

2014-10-26T11:40:12+00:00

an explicit PUSH_FRAME instruction

2014-10-22T14:11:41+00:00

finally proper stack unwind in the evaluator

2014-10-16T10:00:32+00:00

the compiler now allows + to be used as a floating point addition in the abstract syntax

2014-10-14T11:15:18+00:00

using instruction RET was wrong; now use EVAL

2014-10-06T15:57:42+00:00

bugfix in the pattern matching compiler and a number of other fixes that I somehow did not push before

2014-09-29T15:00:04+00:00

a major revision of the bytecode generator and JIT compiler. the effect is that now we can compute with lambda functions and with true tail recursion

2014-09-11T15:39:39+00:00