Problem: the alloca calls reserve 16 bytes each, so pointer arithmetic in "plus" is wrong

int32.ll

; ModuleID = 'integer.dodo'

; Function Attrs: noinline nounwind
define void @int32() {
	%frame = alloca i8*, align 8
	%context = alloca i8*, align 8
	br label %test
	
plus:
	%plus1 = load i8*, i8** %frame, align 8
	%plus2 = bitcast i8* %plus1 to i32*
	%plus3 = getelementptr inbounds i32, i32* %plus2, i64 -1
	%plus4 = bitcast i32* %plus3 to i8**
	%plus5 = getelementptr inbounds i8*, i8** %plus4, i64 -1
	%plus_a = load i32, i32* %plus2, align 4
	%plus_b = load i32, i32* %plus3, align 4
	%plus_ret = load i8*, i8** %plus5, align 8
	%plus6 = add nsw i32 %plus_a, %plus_b
	%plus7 = getelementptr inbounds i8*, i8** %plus5, i64 -1
	%plus8 = bitcast i8** %plus7 to i32*
	store i32 %plus6, i32* %plus8, align 4
	indirectbr i8* %plus_ret, [label %endtest]
	
test:
  %test_a = alloca i32, align 4
	%test_b = alloca i32, align 4
	%test_cont = alloca i8*, align 8
	%test_val = alloca i32, align 4
	store i32 45, i32* %test_a, align 4
	store i32 19, i32* %test_b, align 4
	store i8* blockaddress(@int32, %endtest), i8** %test_cont, align 8
	%test1 = bitcast i32* %test_a to i8*
	store i8* %test1, i8** %frame, align 8
	br label %plus
	
endtest:
	%endtest_r = load i32, i32* %test_val, align 4
  ret void
}

; Function Attrs: noinline nounwind optnone ssp uwtable
define void @main(i32, i8**) #0 {
	call void @int32()
  ret void
}