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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=thumbv8m.main-none-none-eabi %s -o - -verify-machineinstrs | FileCheck %s
declare i32 @fn(i32) #0
define i32 @f1(i32 %a) #0 {
; CHECK-LABEL: f1:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: .save {r4, lr}
; CHECK-NEXT: push {r4, lr}
; CHECK-NEXT: mov r4, r0
; CHECK-NEXT: bl fn
; CHECK-NEXT: movs r0, #0
; CHECK-NEXT: cbz r4, .LBB0_2
; CHECK-NEXT: @ %bb.1: @ %return
; CHECK-NEXT: pop {r4, pc}
; CHECK-NEXT: .LBB0_2: @ %if.end
; CHECK-NEXT: bl fn
; CHECK-NEXT: adds r0, #1
; CHECK-NEXT: pop {r4, pc}
entry:
%call = tail call i32 @fn(i32 %a) #2
%tobool = icmp eq i32 %a, 0
br i1 %tobool, label %if.end, label %return
if.end: ; preds = %entry
%call1 = tail call i32 @fn(i32 0) #2
%add = add nsw i32 %call1, 1
br label %return
return: ; preds = %entry, %if.end
%retval.0 = phi i32 [ %add, %if.end ], [ 0, %entry ]
ret i32 %retval.0
}
define i32 @f2(i32 %a) #0 {
; CHECK-LABEL: f2:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: .save {r4, lr}
; CHECK-NEXT: push {r4, lr}
; CHECK-NEXT: mov r4, r0
; CHECK-NEXT: bl fn
; CHECK-NEXT: movs r0, #0
; CHECK-NEXT: cmp r4, #1
; CHECK-NEXT: bne .LBB1_2
; CHECK-NEXT: @ %bb.1: @ %if.end
; CHECK-NEXT: bl fn
; CHECK-NEXT: adds r0, #1
; CHECK-NEXT: .LBB1_2: @ %return
; CHECK-NEXT: pop {r4, pc}
entry:
%call = tail call i32 @fn(i32 %a) #2
%tobool = icmp eq i32 %a, 1
br i1 %tobool, label %if.end, label %return
if.end: ; preds = %entry
%call1 = tail call i32 @fn(i32 0) #2
%add = add nsw i32 %call1, 1
br label %return
return: ; preds = %entry, %if.end
%retval.0 = phi i32 [ %add, %if.end ], [ 0, %entry ]
ret i32 %retval.0
}
define void @f3(i32 %x) #0 {
; CHECK-LABEL: f3:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: cmp r0, #1
; CHECK-NEXT: bne .LBB2_2
; CHECK-NEXT: @ %bb.1: @ %t
; CHECK-NEXT: .save {r7, lr}
; CHECK-NEXT: push {r7, lr}
; CHECK-NEXT: movs r0, #0
; CHECK-NEXT: bl fn
; CHECK-NEXT: pop.w {r7, lr}
; CHECK-NEXT: .LBB2_2: @ %f
; CHECK-NEXT: bx lr
entry:
%p = icmp eq i32 %x, 1
br i1 %p, label %t, label %f
t:
call i32 @fn(i32 0)
br label %f
f:
ret void
}
attributes #0 = { minsize nounwind optsize }
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