18 lines
381 B
LLVM
18 lines
381 B
LLVM
|
; RUN: opt < %s -scalar-evolution -analyze | FileCheck %s
|
||
|
|
; PR2002
|
||
|
|
|
||
|
|
; CHECK: Loop %loop: backedge-taken count is (100 + (-100 smax %n))
|
||
|
|
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
|
||
|
|
}
|