File: 2007-10-01-PromoteSafeValue.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (23 lines) | stat: -rw-r--r-- 576 bytes parent folder | download | duplicates (28) 
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 -licm -S | FileCheck %s
; Promote value if at least one use is safe


define i32 @f2(i32* %p, i8* %q) {
entry:
        br label %loop.head

loop.head:              ; preds = %cond.true, %entry
        store i32 20, i32* %p
        %tmp3.i = icmp eq i8* null, %q            ; <i1> [#uses=1]
        br i1 %tmp3.i, label %exit, label %cond.true
        
cond.true:              ; preds = %loop.head
        store i32 40, i32* %p
        br label %loop.head

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