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
|
; RUN: llc < %s -march=x86 -tailcallopt | FileCheck %s
declare i32 @putchar(i32)
define fastcc i32 @checktail(i32 %x, i32* %f, i32 %g) nounwind {
; CHECK: checktail:
%tmp1 = icmp sgt i32 %x, 0
br i1 %tmp1, label %if-then, label %if-else
if-then:
%fun_ptr = bitcast i32* %f to i32(i32, i32*, i32)*
%arg1 = add i32 %x, -1
call i32 @putchar(i32 90)
; CHECK: jmpl *%e{{.*}}
%res = tail call fastcc i32 %fun_ptr( i32 %arg1, i32 * %f, i32 %g)
ret i32 %res
if-else:
ret i32 %x
}
define i32 @main() nounwind {
%f = bitcast i32 (i32, i32*, i32)* @checktail to i32*
%res = tail call fastcc i32 @checktail( i32 10, i32* %f,i32 10)
ret i32 %res
}
|
