LLVM Functions

Definitions

Return Nothing Function

define void @do_nothing() {
	ret void
}

• Return type is void
• Returns void
• Starts with a @ which is a LLVM Sigil

Function That Takes Arguments and Returns

define i32 @square(i32 %x) {
	%1 = mul i32 %x, %x
	ret i32 $1
}

• %1 is a register that is in i32 type,
• mul is a LLVM Operations that multiplies $x with $x

Function Calls

%result = call i32 @my_func(i32 %x)