File: preserve-make-implicit-on-switch-to-br.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (30 lines) | stat: -rw-r--r-- 691 bytes parent folder | download | duplicates (7) 
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
 
; RUN: opt %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s

; ConstantFoldTerminator function can convert SwitchInst with one case (and default) to
; a conditional BranchInst. This test checks the converted BranchInst preserve the
; make.implicit metadata.

declare i32 @consume(i32*)
declare void @trap()

define i32 @copy-metadata(i32* %x) {

entry:
  %x.int = ptrtoint i32* %x to i64

; CHECK: br i1 %cond, label %is_null, label %default, !make.implicit !0
  switch i64 %x.int, label %default [
    i64 0, label %is_null
  ], !make.implicit !0

default:
  %0 = call i32 @consume(i32* %x)
  ret i32 %0

is_null:
  call void @trap()
  unreachable
}

!0 = !{}