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
|
; RUN: llc -mtriple=x86_64-windows-gnu -exception-model=dwarf < %s | FileCheck %s
%struct.A = type { [4096 x i8] }
@a = common global i32 0, align 4
@b = common global i32 0, align 4
define void @fn1() nounwind uwtable {
entry:
%ctx = alloca %struct.A, align 1
%0 = load i32, i32* @a, align 4
%tobool = icmp eq i32 %0, 0
%div = sdiv i32 %0, 6
%cond = select i1 %tobool, i32 %div, i32 %0
store i32 %cond, i32* @b, align 4
%1 = getelementptr inbounds %struct.A, %struct.A* %ctx, i64 0, i32 0, i64 0
call void @llvm.lifetime.start.p0i8(i64 4096, i8* nonnull %1)
%2 = ptrtoint %struct.A* %ctx to i64
%3 = trunc i64 %2 to i32
call void @fn2(i32 %3)
call void @llvm.lifetime.end.p0i8(i64 4096, i8* nonnull %1)
ret void
}
declare void @fn2(i32)
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
; CHECK-LABEL: fn1:
; CHECK: pushq %rax
; CHECK: movl $4128, %eax
; CHECK: callq ___chkstk_ms
; CHECK: subq %rax, %rsp
; CHECK: movq 4128(%rsp), %rax
; CHECK: addq $4136, %rsp
|
