File: quadradic-exit-value.ll

package info (click to toggle)
llvm-3.0 3.0-10
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 75,412 kB
  • sloc: cpp: 468,043; asm: 109,345; ansic: 13,782; sh: 12,935; ml: 4,716; python: 4,351; perl: 2,096; makefile: 1,905; pascal: 1,578; exp: 389; xml: 283; lisp: 187; csh: 117
file content (18 lines) | stat: -rw-r--r-- 452 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
; RUN: opt < %s -analyze -iv-users | grep {\{1,+,3,+,2\}<%loop> (post-inc with loop %loop)}

; The value of %r is dependent on a polynomial iteration expression.

define i64 @foo(i64 %n) {
entry:
  br label %loop

loop:
  %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %loop ]
  %indvar.next = add i64 %indvar, 1
  %c = icmp eq i64 %indvar.next, %n
  br i1 %c, label %exit, label %loop

exit:
  %r = mul i64 %indvar.next, %indvar.next
  ret i64 %r
}