File: undefined.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (39 lines) | stat: -rw-r--r-- 646 bytes parent folder | download | duplicates (16) 
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
28
29
30
31
32
33
34
35
36
37
38
39
 
; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s

; ScalarEvolution shouldn't attempt to interpret expressions which have
; undefined results.

define void @foo(i64 %x) {

  %a = udiv i64 %x, 0
; CHECK: -->  (%x /u 0)

  %B = shl i64 %x, 64
; CHECK: -->  %B

  %b = ashr i64 %B, 64
; CHECK: -->  %b

  %c = lshr i64 %x, 64
; CHECK: -->  %c

  %d = shl i64 %x, 64
; CHECK: -->  %d

  %E = shl i64 %x, -1
; CHECK: -->  %E

  %e = ashr i64 %E, -1
; CHECK: -->  %e

  %f = lshr i64 %x, -1
; CHECK: -->  %f

  %g = shl i64 %x, -1
; CHECK: -->  %g

  %h = bitcast i64 undef to i64
; CHECK: -->  undef

  ret void
}