File: pr24952.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (27 lines) | stat: -rw-r--r-- 564 bytes parent folder | download | duplicates (14)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
; RUN: opt -passes=indvars -S < %s | FileCheck %s

declare void @use(i1)

define void @f() {
; CHECK-LABEL: @f(
 entry:
  %x = alloca i32
  %y = alloca i32
  br label %loop

 loop:
  %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]
  %iv.inc = add i32 %iv, 1

  %x.gep = getelementptr i32, ptr %x, i32 %iv
  %eql = icmp eq ptr %x.gep, %y
; CHECK-NOT: @use(i1 true)
  call void @use(i1 %eql)

  ; %be.cond deliberately 'false' -- we want want the trip count to be 0.
  %be.cond = icmp ult i32 %iv, 0
  br i1 %be.cond, label %loop, label %leave

 leave:
  ret void
}