File: 2007-10-01-PromoteSafeValue.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 (23 lines) | stat: -rw-r--r-- 571 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
 
; RUN: opt < %s -passes=licm -S | FileCheck %s
; Promote value if at least one use is safe


define i32 @f2(ptr %p, ptr %q) {
entry:
        br label %loop.head

loop.head:              ; preds = %cond.true, %entry
        store i32 20, ptr %p
        %tmp3.i = icmp eq ptr null, %q            ; <i1> [#uses=1]
        br i1 %tmp3.i, label %exit, label %cond.true

cond.true:              ; preds = %loop.head
        store i32 40, ptr %p
        br label %loop.head

; CHECK: exit:
; CHECK: store i32 20, ptr %p
exit:           ; preds = %loop.head
        ret i32 0
}