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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
; RUN: llc -mtriple aarch64-unknown-windows-msvc -filetype asm -o - %s | FileCheck %s -check-prefixes=CHECK,DAG-ISEL
; RUN: llc -mtriple aarch64-unknown-windows-msvc -fast-isel -filetype asm -o - %s | FileCheck %s -check-prefixes=CHECK,FAST-ISEL
; RUN: llc -mtriple aarch64-unknown-windows-msvc -verify-machineinstrs -O0 -filetype asm -o - %s | FileCheck %s -check-prefixes=CHECK,GLOBAL-ISEL,GLOBAL-ISEL-FALLBACK
@var = external dllimport global i32
@ext = external global i32
declare dllimport i32 @external()
declare i32 @internal()
define i32 @get_var() {
%1 = load i32, ptr @var, align 4
ret i32 %1
}
; CHECK-LABEL: get_var
; CHECK: adrp x8, __imp_var
; CHECK: ldr x8, [x8, :lo12:__imp_var]
; CHECK: ldr w0, [x8]
; CHECK: ret
define i32 @get_ext() {
%1 = load i32, ptr @ext, align 4
ret i32 %1
}
; CHECK-LABEL: get_ext
; CHECK: adrp x8, ext
; DAG-ISEL: ldr w0, [x8, :lo12:ext]
; FAST-ISEL: add x8, x8, :lo12:ext
; FAST-ISEL: ldr w0, [x8]
; GLOBAL-ISEL-FALLBACK: ldr w0, [x8, :lo12:ext]
; CHECK: ret
define ptr @get_var_pointer() {
ret ptr @var
}
; CHECK-LABEL: get_var_pointer
; CHECK: adrp [[REG1:x[0-9]+]], __imp_var
; CHECK: ldr {{x[0-9]+}}, [[[REG1]], :lo12:__imp_var]
; CHECK: ret
define i32 @call_external() {
%call = tail call i32 @external()
ret i32 %call
}
; CHECK-LABEL: call_external
; CHECK: adrp x0, __imp_external
; CHECK: ldr x0, [x0, :lo12:__imp_external]
; CHECK: br x0
define i32 @call_internal() {
%call = tail call i32 @internal()
ret i32 %call
}
; CHECK-LABEL: call_internal
; DAG-ISEL: b internal
; FAST-ISEL: b internal
; GLOBAL-ISEL: b internal
|
