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}, {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
}
|
