llvm-6502/test/Analysis/ScalarEvolution/2008-07-19-InfiniteLoop.ll

; RUN: opt < %s -analyze -scalar-evolution -disable-output \
; RUN:   -scalar-evolution-max-iterations=0 | grep Unpredictable
; PR2088

define void @fun() {
entry:
        br label %loop
loop:
        %i = phi i8 [ 0, %entry ], [ %i.next, %loop ]
        %i.next = add i8 %i, 4
        %cond = icmp ne i8 %i.next, 6
        br i1 %cond, label %loop, label %exit
exit:
        ret void
}
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8 2009-09-11 18:01:28 +00:00			`; RUN: opt < %s -analyze -scalar-evolution -disable-output \`
Fix PR2088. Use modulo linear equation solver to compute loop iteration count. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53810 91177308-0d34-0410-b5e6-96231b3b80d8 2008-07-20 15:55:14 +00:00			`; RUN: -scalar-evolution-max-iterations=0 \| grep Unpredictable`
			`; PR2088`

			`define void @fun() {`
			`entry:`
			`br label %loop`
			`loop:`
			`%i = phi i8 [ 0, %entry ], [ %i.next, %loop ]`
			`%i.next = add i8 %i, 4`
			`%cond = icmp ne i8 %i.next, 6`
			`br i1 %cond, label %loop, label %exit`
			`exit:`
			`ret void`
			`}`