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
|
; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s --check-prefix=NO-OPTION
; RUN: llc < %s -mtriple=x86_64-- -disable-tail-calls | FileCheck %s --check-prefix=DISABLE-TRUE
; RUN: llc < %s -mtriple=x86_64-- -disable-tail-calls=false | FileCheck %s --check-prefix=DISABLE-FALSE
; Check that command line option "-disable-tail-calls" overrides function
; attribute "disable-tail-calls".
; NO-OPTION-LABEL: {{\_?}}func_attr
; NO-OPTION: callq {{\_?}}callee
; DISABLE-FALSE-LABEL: {{\_?}}func_attr
; DISABLE-FALSE: jmp {{\_?}}callee
; DISABLE-TRUE-LABEL: {{\_?}}func_attr
; DISABLE-TRUE: callq {{\_?}}callee
define i32 @func_attr(i32 %a) #0 {
entry:
%call = tail call i32 @callee(i32 %a)
ret i32 %call
}
; NO-OPTION-LABEL: {{\_?}}func_noattr
; NO-OPTION: jmp {{\_?}}callee
; DISABLE-FALSE-LABEL: {{\_?}}func_noattr
; DISABLE-FALSE: jmp {{\_?}}callee
; DISABLE-TRUE-LABEL: {{\_?}}func_noattr
; DISABLE-TRUE: callq {{\_?}}callee
define i32 @func_noattr(i32 %a) {
entry:
%call = tail call i32 @callee(i32 %a)
ret i32 %call
}
declare i32 @callee(i32)
attributes #0 = { "disable-tail-calls"="true" }
|
