Workaround for performance penalty of splatting a number (#33108)

(cherry picked from commit 4bf946a)
JuliaLang · Sep 3, 2019 · 5f214ab · 5f214ab
1 parent eac42ce
commit 5f214ab
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/stdlib/LinearAlgebra/src/generic.jl b/stdlib/LinearAlgebra/src/generic.jl
@@ -60,7 +60,9 @@ julia> C
 ```
 """
 @inline @propagate_inbounds function _modify!(p::MulAddMul{ais1, bis0},
-                                              x, C, idx) where {ais1, bis0}
+                                              x, C, idx′) where {ais1, bis0}
+    # Workaround for performance penalty of splatting a number (#29114):
+    idx = idx′ isa Integer ? (idx′,) : idx′
     if bis0
         C[idx...] = p(x)
     else