1; RUN: llc -mtriple=armv7-linux-gnueabihf %s -o - | FileCheck %s
2
3; Check that we don't create an unpredictable STR instruction,
4; e.g. str r0, [r0], #4
5
6define i32* @earlyclobber-str-post(i32* %addr) nounwind {
7; CHECK-LABEL: earlyclobber-str-post
8; CHECK-NOT: str r[[REG:[0-9]+]], [r[[REG]]], #4
9  %val = ptrtoint i32* %addr to i32
10  store i32 %val, i32* %addr
11  %new = getelementptr i32* %addr, i32 1
12  ret i32* %new
13}
14
15define i16* @earlyclobber-strh-post(i16* %addr) nounwind {
16; CHECK-LABEL: earlyclobber-strh-post
17; CHECK-NOT: strh r[[REG:[0-9]+]], [r[[REG]]], #2
18  %val = ptrtoint i16* %addr to i32
19  %tr = trunc i32 %val to i16
20  store i16 %tr, i16* %addr
21  %new = getelementptr i16* %addr, i32 1
22  ret i16* %new
23}
24
25define i8* @earlyclobber-strb-post(i8* %addr) nounwind {
26; CHECK-LABEL: earlyclobber-strb-post
27; CHECK-NOT: strb r[[REG:[0-9]+]], [r[[REG]]], #1
28  %val = ptrtoint i8* %addr to i32
29  %tr = trunc i32 %val to i8
30  store i8 %tr, i8* %addr
31  %new = getelementptr i8* %addr, i32 1
32  ret i8* %new
33}
34