Add precompile statements

new precompilation approach

Author: lkdvos

src/TensorOperations.jl

@@ -77,4 +77,6 @@ function __init__()
     @require_extensions
 end
 
+include("precompile.jl")
+
 end # module

src/precompile.jl

@@ -0,0 +1,63 @@
+const PRECOMPILE_ELTYPES = (Float64, ComplexF64)
+
+# tensoradd!
+# ----------
+const PRECOMPILE_ADD_NDIMS = 5
+
+for T in PRECOMPILE_ELTYPES
+    for N in 0:PRECOMPILE_ADD_NDIMS
+        C = Array{T,N}
+        A = Array{T,N}
+        pA = Index2Tuple{N,0}
+
+        precompile(tensoradd!, (C, A, pA, Bool, One, Zero))
+        precompile(tensoradd!, (C, A, pA, Bool, T, Zero))
+        precompile(tensoradd!, (C, A, pA, Bool, T, T))
+
+        precompile(tensoralloc_add, (T, A, pA, Bool, Val{true}))
+        precompile(tensoralloc_add, (T, A, pA, Bool, Val{false}))
+    end
+end
+
+# tensortrace!
+# ------------
+const PRECOMPILE_TRACE_NDIMS = (4, 2)
+
+for T in PRECOMPILE_ELTYPES
+    for N1 in 0:PRECOMPILE_TRACE_NDIMS[1], N2 in 0:PRECOMPILE_TRACE_NDIMS[2]
+        C = Array{T,N1}
+        A = Array{T,N1 + 2N2}
+        p = Index2Tuple{N1,0}
+        q = Index2Tuple{N2,N2}
+
+        precompile(tensortrace!, (C, A, p, q, Bool, One, Zero))
+        precompile(tensortrace!, (C, A, p, q, Bool, T, Zero))
+        precompile(tensortrace!, (C, A, p, q, Bool, T, T))
+
+        # allocation re-uses tensoralloc_add
+    end
+end
+
+# tensorcontract!
+# ---------------
+const PRECOMPILE_CONTRACT_NDIMS = (3, 2, 3)
+
+for T in PRECOMPILE_ELTYPES
+    for N1 in 0:PRECOMPILE_CONTRACT_NDIMS[1], N2 in 0:PRECOMPILE_CONTRACT_NDIMS[2],
+        N3 in 0:PRECOMPILE_CONTRACT_NDIMS[3]
+        NA = N1 + N2
+        NB = N2 + N3
+        NC = N1 + N3
+        C, A, B = Array{T,NC}, Array{T,NA}, Array{T,NB}
+        pA = Index2Tuple{N1,N2}
+        pB = Index2Tuple{N2,N3}
+        pAB = Index2Tuple{NC,0}
+
+        precompile(tensorcontract!, (C, A, pA, Bool, B, pB, Bool, pAB, One, Zero))
+        precompile(tensorcontract!, (C, A, pA, Bool, B, pB, Bool, pAB, T, Zero))
+        precompile(tensorcontract!, (C, A, pA, Bool, B, pB, Bool, pAB, T, T))
+
+        precompile(tensoralloc_contract, (T, A, pA, Bool, B, pB, Bool, pAB, Val{true}))
+        precompile(tensoralloc_contract, (T, A, pA, Bool, B, pB, Bool, pAB, Val{false}))
+    end
+end