gistfile1.ll

local:~/Repositories/MacRuby VM_DUMP_IR=1 ./miniruby -e "def f(x,y); x/y; end;"
IR dump ----------------------------------------------
; ModuleID = 'Roxor'
@redefined = internal global i1 false		; <i1*> [#uses=1]

define i64 @0(i64 %self, i8* %sel) {
MainBlock:
	tail call void @rb_vm_prepare_method(i64 140735081247880, i8* inttoptr (i64 4310314656 to i8*), i8* inttoptr (i64 4370479232 to i8*), i8* inttoptr (i64 8590190784 to i8*))
	ret i64 4
}

define i64 @1(i64 %self, i8* %sel, i64 %x, i64 %y) {
MainBlock:
	%0 = alloca i64		; <i64*> [#uses=2]
	store i64 %x, i64* %0
	%1 = alloca i64		; <i64*> [#uses=2]
	store i64 %y, i64* %1
	%2 = alloca i8*		; <i8**> [#uses=1]
	%3 = inttoptr i64 0 to i8*		; <i8*> [#uses=1]
	store i8* %3, i8** %2
	br label %entry_point

entry_point:		; preds = %MainBlock
	%4 = inttoptr i64 4310314368 to i8*		; <i8*> [#uses=1]
	%5 = load i64* %0		; <i64> [#uses=4]
	%6 = inttoptr i64 4309812880 to i8*		; <i8*> [#uses=1]
	%7 = inttoptr i64 0 to i8*		; <i8*> [#uses=0]
	%8 = load i64* %1		; <i64> [#uses=4]
	%9 = inttoptr i64 0 to i8*		; <i8*> [#uses=1]
	%10 = load i1* @redefined		; <i1> [#uses=1]
	%11 = icmp eq i1 %10, false		; <i1> [#uses=1]
	br i1 %11, label %op_not_redefined, label %op_dispatch

op_not_redefined:		; preds = %entry_point
	%12 = and i64 %5, 3		; <i64> [#uses=1]
	%13 = and i64 %8, 3		; <i64> [#uses=1]
	%14 = add i64 %12, %13		; <i64> [#uses=1]
	switch i64 %14, label %op_dispatch [
		i64 6, label %op_optimize_floating
		i64 2, label %op_optimize_integral
	]

op_optimize_floating:		; preds = %op_not_redefined
	%15 = xor i64 %5, 3		; <i64> [#uses=1]
	%16 = xor i64 %8, 3		; <i64> [#uses=1]
	%17 = bitcast i64 %15 to double		; <double> [#uses=1]
	%18 = bitcast i64 %16 to double		; <double> [#uses=1]
	%19 = fdiv double %17, %18		; <double> [#uses=1]
	%20 = bitcast double %19 to i64		; <i64> [#uses=1]
	%21 = or i64 %20, 3		; <i64> [#uses=1]
	br label %op_merge

op_optimize_integral:		; preds = %op_not_redefined
	%22 = ashr i64 %5, 2		; <i64> [#uses=1]
	%23 = ashr i64 %8, 2		; <i64> [#uses=1]
	%24 = sdiv i64 %22, %23		; <i64> [#uses=1]
	%25 = shl i64 %24, 2		; <i64> [#uses=1]
	%26 = or i64 %25, 1		; <i64> [#uses=1]
	br label %op_merge

op_dispatch:		; preds = %op_not_redefined, %entry_point
	%27 = call i64 (i8*, i64, i8*, i8*, i8, i32, ...)* @rb_vm_dispatch(i8* %4, i64 %5, i8* %6, i8* %9, i8 0, i32 1, i64 %8)		; <i64> [#uses=1]
	br label %op_merge

op_merge:		; preds = %op_dispatch, %op_optimize_integral, %op_optimize_floating
	%op_tmp = phi i64 [ %21, %op_optimize_floating ], [ %26, %op_optimize_integral ], [ %27, %op_dispatch ]		; <i64> [#uses=1]
	ret i64 %op_tmp
}

declare i64 @rb_vm_dispatch(i8*, i64, i8*, i8*, i8, i32, ...)

declare void @rb_vm_prepare_method(i64, i8*, i8*, i8*)
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