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
|
; RUN: opt -S -passes=deadargelim %s | FileCheck %s
; Don't eliminate dead arguments from naked functions.
; CHECK: define internal i32 @naked(i32 %x)
define internal i32 @naked(i32 %x) #0 {
tail call void asm sideeffect inteldialect "mov eax, [esp + $$4]\0A\09ret", "~{eax},~{dirflag},~{fpsr},~{flags}"()
unreachable
}
; Don't eliminate dead varargs from naked functions.
; CHECK: define internal i32 @naked_va(i32 %x, ...)
define internal i32 @naked_va(i32 %x, ...) #0 {
tail call void asm sideeffect inteldialect "mov eax, [esp + $$8]\0A\09ret", "~{eax},~{dirflag},~{fpsr},~{flags}"()
unreachable
}
define i32 @f(i32 %x, i32 %y) {
%r = call i32 @naked(i32 %x)
%s = call i32 (i32, ...) @naked_va(i32 %x, i32 %r)
; Make sure the arguments are still there: not removed or replaced with undef.
; CHECK: %r = call i32 @naked(i32 %x)
; CHECK: %s = call i32 (i32, ...) @naked_va(i32 %x, i32 %r)
ret i32 %s
}
attributes #0 = { naked }
|
