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; RUN: opt -inline -tailcallelim -indvars -loop-deletion -S < %s | FileCheck %s
; Inline shouldn't inline foo into itself because it's a tailcallelim
; candidate. Tailcallelim should convert the call into a loop. Indvars
; should calculate the exit value, making the loop dead. Loop deletion
; should delete the loop.
; PR6842
; CHECK: define i32 @bar() nounwind {
; CHECK-NEXT: ret i32 10000
; CHECK-NEXT: }
define internal i32 @foo(i32 %x) nounwind {
%i = add i32 %x, 1 ; <i32> [#uses=3]
%a = icmp slt i32 %i, 10000 ; <i1> [#uses=1]
br i1 %a, label %more, label %done
done: ; preds = %0
ret i32 %i
more: ; preds = %0
%z = tail call i32 @foo(i32 %i) ; <i32> [#uses=1]
ret i32 %z
}
define i32 @bar() nounwind {
%z = call i32 @foo(i32 0) ; <i32> [#uses=1]
ret i32 %z
}
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