blob: bf54ba2f730ca9cde9e5816ee59519dd2c17d7b2 (
plain)
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
|
; RUN: llc < %s -march arm -mcpu swift -verify-machineinstrs
declare i32 @f(i32 %p0, i32 %p1)
define i32 @foo(i32* %ptr) {
entry:
%cmp = icmp ne i32* %ptr, null
br i1 %cmp, label %if.then, label %if.else
; present something which can be easily if-converted
if.then:
; %R0 should be killed here
%valt = load i32* %ptr, align 4
br label %return
if.else:
; %R0 should be killed here, however after if-conversion the %R0 kill
; has to be removed because if.then will follow after this and still
; read it.
%addr = getelementptr inbounds i32* %ptr, i32 4
%vale = load i32* %addr, align 4
br label %return
return:
%phival = phi i32 [ %valt, %if.then ], [ %vale, %if.else ]
; suggest to bring %phival/%valt/%vale into %R1 (because otherwise there
; will be no kills in if.then/if.else)
%retval = call i32 @f (i32 0, i32 %phival)
ret i32 %retval
}
|
