19 lines
474 B
LLVM
19 lines
474 B
LLVM
|
; RUN: opt < %s -scalar-evolution -analyze -enable-new-pm=0 | FileCheck %s
|
||
|
|
; RUN: opt < %s "-passes=print<scalar-evolution>" -disable-output 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
; CHECK: Loop %header: backedge-taken count is (0 smax %n)
|
||
|
|
|
||
|
|
define void @foo(i32 %n) {
|
||
|
|
entry:
|
||
|
|
br label %header
|
||
|
|
header:
|
||
|
|
%i = phi i32 [ 0, %entry ], [ %i.inc, %next ]
|
||
|
|
%cond = icmp sgt i32 %n, %i
|
||
|
|
br i1 %cond, label %next, label %return
|
||
|
|
next:
|
||
|
|
%i.inc = add i32 %i, 1
|
||
|
|
br label %header
|
||
|
|
return:
|
||
|
|
ret void
|
||
|
|
}
|