tests2/oneAssign.R

In duncantl/R2llvm: LLVM-based compiler for R code

# This shows that the optimizer will remove the assignment to a local variable.
library(R2llvm)
f = function(x = 1) {x = x + 1; x}
fc = compileFunction(f)
showModule(fc)
stopifnot(identical(.llvm(fc, 10), 11))

# Also, the CFG leaves the variable names unaltered (using the code in the duncan branch of rstatic)
rstatic::to_cfg(f)