1 ; RUN: llc -mcpu=atmega328 < %s -march=avr | FileCheck %s
3 ; This test verifies that the pointer to a basic block
4 ; should always be a pointer in address space 1.
6 ; If this were not the case, then programs targeting
7 ; AVR that attempted to read their own machine code
8 ; via a pointer to a label would actually read from RAM
9 ; using a pointer relative to the the start of program flash.
11 ; This would cause a load of uninitialized memory, not even
12 ; touching the program's machine code as otherwise desired.
14 target datalayout = "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8"
16 ; CHECK-LABEL: load_with_no_forward_reference
17 define i8 @load_with_no_forward_reference(i8 %a, i8 %b) {
19 ; CHECK: ldi r30, .Ltmp0+2
20 ; CHECK-NEXT: ldi r31, .Ltmp0+4
22 %bar = load i8, i8 addrspace(1)* blockaddress(@function_with_no_forward_reference, %second)
26 ; CHECK-LABEL: load_from_local_label
27 define i8 @load_from_local_label(i8 %a, i8 %b) {
29 %result1 = add i8 %a, %b
33 ; CHECK-LABEL: .Ltmp1:
35 ; CHECK: ldi r30, .Ltmp1+2
36 ; CHECK-NEXT: ldi r31, .Ltmp1+4
37 ; CHECK-NEXT: lpm r24, Z
38 %result2 = load i8, i8 addrspace(1)* blockaddress(@load_from_local_label, %second)
42 ; A function with no forward reference, right at the end
44 define i8 @function_with_no_forward_reference(i8 %a, i8 %b) {
46 %result = add i8 %a, %b