samtkaplan

;  @ /data/esdrd/tqff/tmp/issue.jl:20 within `does_not_vectorize!'
define nonnull %jl_value_t addrspace(10)* @"japi1_does_not_vectorize!_16049"(%jl_value_t addrspace(10)*, %jl_value_t addrspace(10)**, i32) #0 {
top:
  %3 = alloca %jl_value_t addrspace(10)**, align 8
  store volatile %jl_value_t addrspace(10)** %1, %jl_value_t addrspace(10)*** %3, align 8
  %4 = load %jl_value_t addrspace(10)*, %jl_value_t addrspace(10)** %1, align 8
  %5 = getelementptr inbounds %jl_value_t addrspace(10)*, %jl_value_t addrspace(10)** %1, i64 1
  %6 = load %jl_value_t addrspace(10)*, %jl_value_t addrspace(10)** %5, align 8
; ┌ @ array.jl:157 within `size'

samtkaplan

package org.foo.bug.jni;

public class Bug {

    static {
        System.loadLibrary("Bug");
    }

    public native static void unreachable();
    

samtkaplan

function laplace_idiomatic (del_x::Array{Float64, 3}, x::Array{Float64, 3})

        n1, n2, n3 = size (x)
        for i3 = 2:n3-1, i2 = 2:n2-1, i1 = 2:n1-1

                del_x[i1,i2,i3] =
                        x[i1+1,i2,i3] + x[i1-1,i2,i3] +
                        x[i1,i2+1,i3] + x[i1,i2-1,i3] +
                        x[i1,i2,i3+1] + x[i1,i2,i3-1] -
                        6.0 * x[i1,i2,i3]

samtkaplan

all : liblaplace.so

liblaplace.so : laplace.h laplace.c
	gcc -O3 -fPIC -c laplace.c
	gcc -O3 -fPIC -shared -o liblaplace.so laplace.o
	rm -f laplace.o

clean:
	rm -f liblaplace.so