derek.holloway
7502bf64a4
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224 lines
5.0 KiB
LLVM
224 lines
5.0 KiB
LLVM
; RUN: llc < %s -mtriple=avr | FileCheck %s
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@count = global i8 0
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@funcptr = global ptr addrspace(1) null
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define avr_intrcc void @interrupt_handler() {
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; CHECK-LABEL: interrupt_handler:
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; CHECK: sei
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; CHECK-NEXT: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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ret void
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}
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define void @interrupt_handler_via_ir_attribute() #0 {
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; CHECK-LABEL: interrupt_handler_via_ir_attribute:
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; CHECK: sei
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; CHECK-NEXT: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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ret void
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}
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define avr_signalcc void @signal_handler() {
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; CHECK-LABEL: signal_handler:
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; CHECK-NOT: sei
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; CHECK: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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ret void
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}
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define void @signal_handler_via_attribute() #1 {
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; CHECK-LABEL: signal_handler_via_attribute:
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; CHECK-NOT: sei
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; CHECK: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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ret void
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}
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define avr_intrcc void @interrupt_alloca() {
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; CHECK-LABEL: interrupt_alloca:
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; CHECK: sei
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; CHECK-NEXT: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK: push r28
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; CHECK-NEXT: push r29
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; CHECK-NEXT: in r28, 61
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; CHECK-NEXT: in r29, 62
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; CHECK-NEXT: sbiw r28, 1
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: cli
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; CHECK-NEXT: out 62, r29
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: out 61, r28
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; CHECK: adiw r28, 1
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: cli
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; CHECK-NEXT: out 62, r29
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: out 61, r28
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; CHECK-NEXT: pop r29
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; CHECK-NEXT: pop r28
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; CHECK: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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alloca i8
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ret void
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}
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define void @signal_handler_with_increment() #1 {
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; CHECK-LABEL: signal_handler_with_increment:
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; CHECK: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK-NEXT: push r24
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; CHECK-NEXT: lds r24, count
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; CHECK-NEXT: inc r24
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; CHECK-NEXT: sts count, r24
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; CHECK-NEXT: pop r24
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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%old = load volatile i8, ptr @count
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%new = add i8 %old, 1
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store volatile i8 %new, ptr @count
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ret void
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}
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; Check that r1 is saved/restored and set to 0 when using inline assembly.
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define void @signal_handler_with_asm() #1 {
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; CHECK-LABEL: signal_handler_with_asm:
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; CHECK: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK-NEXT: push r1
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; CHECK-NEXT: clr r1
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; CHECK-NEXT: push r24
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; CHECK-NEXT: ldi
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; ;APP
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; CHECK: mov
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; ;NO_APP
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; CHECK: pop r24
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; CHECK-NEXT: pop r1
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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call i8 asm sideeffect "mov $0, $1", "=r,r"(i8 3) nounwind
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ret void
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}
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declare void @foo()
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; When a signal handler calls a function, it must push/pop all call clobbered
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; registers.
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define void @signal_handler_with_call() #1 {
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; CHECK-LABEL: signal_handler_with_call:
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; CHECK: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK-NEXT: push r1
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; CHECK-NEXT: clr r1
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; CHECK-NEXT: push r18
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; CHECK-NEXT: push r19
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; CHECK-NEXT: push r20
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; CHECK-NEXT: push r21
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; CHECK-NEXT: push r22
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; CHECK-NEXT: push r23
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; CHECK-NEXT: push r24
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; CHECK-NEXT: push r25
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; CHECK-NEXT: push r26
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; CHECK-NEXT: push r27
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; CHECK-NEXT: push r30
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; CHECK-NEXT: push r31
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; CHECK-NEXT: call foo
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; CHECK-NEXT: pop r31
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; CHECK-NEXT: pop r30
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; CHECK-NEXT: pop r27
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; CHECK-NEXT: pop r26
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; CHECK-NEXT: pop r25
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; CHECK-NEXT: pop r24
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; CHECK-NEXT: pop r23
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; CHECK-NEXT: pop r22
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; CHECK-NEXT: pop r21
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; CHECK-NEXT: pop r20
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; CHECK-NEXT: pop r19
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; CHECK-NEXT: pop r18
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; CHECK-NEXT: pop r1
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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call void @foo()
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ret void
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}
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define void @signal_handler_with_icall() #1 {
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; CHECK-LABEL: signal_handler_with_icall:
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; CHECK: push r0
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: push r0
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; CHECK-NEXT: push r1
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; CHECK-NEXT: clr r1
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; CHECK-NEXT: push r18
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; CHECK-NEXT: push r19
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; CHECK-NEXT: push r20
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; CHECK-NEXT: push r21
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; CHECK-NEXT: push r22
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; CHECK-NEXT: push r23
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; CHECK-NEXT: push r24
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; CHECK-NEXT: push r25
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; CHECK-NEXT: push r26
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; CHECK-NEXT: push r27
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; CHECK-NEXT: push r30
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; CHECK-NEXT: push r31
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; CHECK-NEXT: lds r30, funcptr
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; CHECK-NEXT: lds r31, funcptr+1
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; CHECK-NEXT: icall
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; CHECK-NEXT: pop r31
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; CHECK-NEXT: pop r30
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; CHECK-NEXT: pop r27
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; CHECK-NEXT: pop r26
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; CHECK-NEXT: pop r25
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; CHECK-NEXT: pop r24
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; CHECK-NEXT: pop r23
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; CHECK-NEXT: pop r22
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; CHECK-NEXT: pop r21
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; CHECK-NEXT: pop r20
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; CHECK-NEXT: pop r19
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; CHECK-NEXT: pop r18
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; CHECK-NEXT: pop r1
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: pop r0
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; CHECK-NEXT: reti
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%ptr = load volatile ptr addrspace(1), ptr @funcptr
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call void %ptr()
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ret void
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}
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attributes #0 = { "interrupt" }
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attributes #1 = { "signal" }
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