llvm-6502/test/Transforms/IndVarsSimplify/tripcount_infinite.llx

; These tests have an infinite trip count.  We obviously shouldn't remove the 
; loops!  :)
;
; RUN: llvm-as < %s | opt -indvars -adce -simplifycfg | llvm-dis | grep set | wc -l > %t2
; RUN: llvm-as < %s | llvm-dis | grep set | wc -l > %t1
; RUN: diff %t1 %t2

int %infinite_linear() {   ;; test for (i = 1; i != 100; i += 2)
entry:
        br label %loop
loop:
        %i = phi int [ 1, %entry ], [ %i.next, %loop ]
        %i.next = add int %i, 2
        %c = setne int %i, 100
        br bool %c, label %loop, label %loopexit
loopexit:
        ret int %i
}

int %infinite_quadratic() {   ;; test for (i = 1; i*i != 63; ++i)
entry:
        br label %loop
loop:
        %i = phi int [ 1, %entry ], [ %i.next, %loop ]
	%isquare = mul int %i, %i
        %i.next = add int %i, 1
        %c = setne int %isquare, 63
        br bool %c, label %loop, label %loopexit
loopexit:
        ret int %i
}