File: alias-recursion.ll

package info (click to toggle)
llvm-toolchain-5.0 1:5.0.1-2~bpo9+1
  • links: PTS, VCS
  • area: main
  • in suites: stretch-backports
  • size: 553,688 kB
  • sloc: cpp: 2,878,786; ansic: 584,110; asm: 246,252; python: 124,751; objc: 106,925; sh: 21,542; lisp: 8,628; pascal: 5,885; ml: 5,544; perl: 5,312; makefile: 2,208; cs: 2,022; xml: 686; php: 212; csh: 117
file content (24 lines) | stat: -rw-r--r-- 804 bytes parent folder | download | duplicates (21)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
; RUN: opt < %s -instcombine -S | FileCheck %s

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"

%class.A = type { i32 (...)** }

@0 = constant [1 x i8*] zeroinitializer

@vtbl = alias i8*, getelementptr inbounds ([1 x i8*], [1 x i8*]* @0, i32 0, i32 0)

define i32 (%class.A*)* @test() {
; CHECK-LABEL: test
entry:
  br i1 undef, label %for.body, label %for.end

for.body:                                         ; preds = %for.body, %entry
  br i1 undef, label %for.body, label %for.end

for.end:                                          ; preds = %for.body, %entry
  %A = phi i32 (%class.A*)** [ bitcast (i8** @vtbl to i32 (%class.A*)**), %for.body ], [ null, %entry ]
  %B = load i32 (%class.A*)*, i32 (%class.A*)** %A
  ret i32 (%class.A*)* %B
}