File: ignore-lifetime.ll

package info (click to toggle)
llvm-3.1 3.1-1
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 80,224 kB
  • sloc: cpp: 491,014; asm: 110,971; ansic: 14,579; sh: 13,120; python: 6,152; ml: 4,719; makefile: 1,830; pascal: 1,553; perl: 874; xml: 283; lisp: 187; csh: 117; exp: 4
file content (26 lines) | stat: -rw-r--r-- 702 bytes parent folder | download | duplicates (6)
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
; RUN: opt -mem2reg -S -o - < %s | FileCheck %s

declare void @llvm.lifetime.start(i64 %size, i8* nocapture %ptr)
declare void @llvm.lifetime.end(i64 %size, i8* nocapture %ptr)

define void @test1() {
; CHECK: test1
; CHECK-NOT: alloca
  %A = alloca i32
  %B = bitcast i32* %A to i8*
  call void @llvm.lifetime.start(i64 2, i8* %B)
  store i32 1, i32* %A
  call void @llvm.lifetime.end(i64 2, i8* %B)
  ret void
}

define void @test2() {
; CHECK: test2
; CHECK-NOT: alloca
  %A = alloca {i8, i16}
  %B = getelementptr {i8, i16}* %A, i32 0, i32 0
  call void @llvm.lifetime.start(i64 2, i8* %B)
  store {i8, i16} zeroinitializer, {i8, i16}* %A
  call void @llvm.lifetime.end(i64 2, i8* %B)
  ret void
}