diff options
| -rw-r--r-- | julia.html.markdown | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/julia.html.markdown b/julia.html.markdown index 58ff7608..3bc660cf 100644 --- a/julia.html.markdown +++ b/julia.html.markdown @@ -659,23 +659,24 @@ fight(Lion("RAR"),Lion("brown","rarrr")) #=> prints The lions come to a tie # Under the hood -# You can take a look at the llvm intermediate code and the assembly code generated. +# You can take a look at the llvm and the assembly code generated. square_area(l) = l * l # square_area (generic function with 1 method) square_area(5) #25 -code_native(square_area, (Int32,)) # What happens when we feed square_area an integer? +# What happens when we feed square_area an integer? +code_native(square_area, (Int32,)) # .section __TEXT,__text,regular,pure_instructions # Filename: none - # Source line: 1 # Prologue + # Source line: 1 # Prologue # push RBP # mov RBP, RSP # Source line: 1 - # movsxd RAX, EDI # Fetch l from memory? - # imul RAX, RAX # 32bit square of l and store the result in RAX - # pop RBP # Restore old base pointer - # ret # Result will still be in RAX + # movsxd RAX, EDI # Fetch l from memory? + # imul RAX, RAX # Square l and store the result in RAX + # pop RBP # Restore old base pointer + # ret # Result will still be in RAX code_native(square_area, (Float32,)) # .section __TEXT,__text,regular,pure_instructions @@ -684,7 +685,7 @@ code_native(square_area, (Float32,)) # push RBP # mov RBP, RSP # Source line: 1 - # vmulss XMM0, XMM0, XMM0 # Scalar single precision multiplication (AVX) (in this case square the number) + # vmulss XMM0, XMM0, XMM0 # Scalar single precision multiply (AVX) # pop RBP # ret @@ -695,11 +696,12 @@ code_native(square_area, (Float64,)) # push RBP # mov RBP, RSP # Source line: 1 - # vmulsd XMM0, XMM0, XMM0 # Scalar double precision multiplacation (AVX) + # vmulsd XMM0, XMM0, XMM0 # Scalar double precision multiply (AVX) # pop RBP # ret # -# Note that julia will use floating point instructions if any of the arguements are floats. +# Note that julia will use floating point instructions if any of the +# arguements are floats. # Let's calculate the area of a circle circle_area(r) = pi * r * r # circle_area (generic function with 1 method) circle_area(5) # 78.53981633974483 @@ -711,10 +713,10 @@ code_native(circle_area, (Int32,)) # push RBP # mov RBP, RSP # Source line: 1 - # vcvtsi2sd XMM0, XMM0, EDI # Load integer (r) from memory - # movabs RAX, 4593140240 # Load pi - # vmulsd XMM1, XMM0, QWORD PTR [RAX] # pi * r - # vmulsd XMM0, XMM0, XMM1 # (pi * r) * r + # vcvtsi2sd XMM0, XMM0, EDI # Load integer (r) from memory + # movabs RAX, 4593140240 # Load pi + # vmulsd XMM1, XMM0, QWORD PTR [RAX] # pi * r + # vmulsd XMM0, XMM0, XMM1 # (pi * r) * r # pop RBP # ret # |