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
37
|
; RUN: llc -mtriple=aarch64-none-linux-gnu -frame-pointer=all < %s | FileCheck %s
@var = global i32 0
declare void @bar()
define void @test_w29_reserved() {
; CHECK-LABEL: test_w29_reserved:
; CHECK: add x29, sp, #{{[0-9]+}}
%val1 = load volatile i32, i32* @var
%val2 = load volatile i32, i32* @var
%val3 = load volatile i32, i32* @var
%val4 = load volatile i32, i32* @var
%val5 = load volatile i32, i32* @var
%val6 = load volatile i32, i32* @var
%val7 = load volatile i32, i32* @var
%val8 = load volatile i32, i32* @var
%val9 = load volatile i32, i32* @var
; CHECK-NOT: ldr w29,
; Call to prevent fp-elim that occurs regardless in leaf functions.
call void @bar()
store volatile i32 %val1, i32* @var
store volatile i32 %val2, i32* @var
store volatile i32 %val3, i32* @var
store volatile i32 %val4, i32* @var
store volatile i32 %val5, i32* @var
store volatile i32 %val6, i32* @var
store volatile i32 %val7, i32* @var
store volatile i32 %val8, i32* @var
store volatile i32 %val9, i32* @var
ret void
; CHECK: ret
}
|
