llvm-6502/test/Analysis/ScalarEvolution/2008-02-12-SMAXTripCount.ll
Dan Gohman 46bdfb0e6b Rename ScalarEvolution's getIterationCount to getBackedgeTakenCount,
to more accurately describe what it does. Expand its doxygen comment
to describe what the backedge-taken count is and how it differs
from the actual iteration count of the loop. Adjust names and
comments in associated code accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65382 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-24 18:55:53 +00:00

17 lines
375 B
LLVM

; RUN: llvm-as < %s | opt -scalar-evolution -analyze | grep {Loop loop: backedge-taken count is (100 + (-100 smax %n))}
; PR2002
define void @foo(i8 %n) {
entry:
br label %loop
loop:
%i = phi i8 [ -100, %entry ], [ %i.inc, %next ]
%cond = icmp slt i8 %i, %n
br i1 %cond, label %next, label %return
next:
%i.inc = add i8 %i, 1
br label %loop
return:
ret void
}