set '-mtune' flags; add 'BH' LinkingTo dependency

Author: kevinushey

R/build.R

@@ -17,16 +17,25 @@ RcppParallelLibs <- function() {
 inlineCxxPlugin <- function() {
    list(
       env = list(
-         PKG_CXXFLAGS = tbbCxxFlags(),
+         PKG_CXXFLAGS = paste(tbbCxxFlags(), mtuneFlags()),
          PKG_LIBS = tbbLdFlags()
       ),
       includes = "#include <RcppParallel.h>",
-      LinkingTo = "RcppParallel",
-      body = function( x ) x,
+      LinkingTo = c("RcppParallel", "BH"),
+      body = function(x) x,
       Depends = "RcppParallel"
    )
 }
 
+mtuneFlags <- function() {
+   switch(Sys.info()[["sysname"]],
+          "Linux"   = "-mtune=native",
+          "Darwin"  = "-mtune=core2",
+          "Windows" = "-mtune=core2",
+          ""
+   )
+}
+
 tbbCxxFlags <- function() {
    flags <- "$(CXX1XSTD)"
    if (Sys.info()['sysname'] == "Windows")

vignettes/simd-operations.Rmd

@@ -17,7 +17,7 @@ Here's a quick example of how we might compute the sum of elements in a vector,
 
 ```{r, engine='Rcpp'}
 // [[Rcpp::depends(RcppParallel)]]
-#include <RcppParallel.h>
+#include <RcppParallelSIMD.h>
 #include <Rcpp.h>
 
 using namespace RcppParallel;
@@ -59,7 +59,7 @@ These functions operate like their `std::` counterparts, but expect a functor wi
 
 ```{r, engine='Rcpp'}
 // [[Rcpp::depends(RcppParallel)]]
-#include <RcppParallel.h>
+#include <RcppParallelSIMD.h>
 #include <Rcpp.h>
 
 #include <boost/simd/arithmetic/functions/min.hpp>