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1; RUN: llc < %s | FileCheck %s
2target triple = "thumbv6---gnueabi"
3
4; Use STM to save the three registers
5; CHECK-LABEL: use_stm:
6; CHECK: .save   {r7, lr}
7; CHECK: .setfp  r7, sp
8; CHECK: stm r3!, {r0, r1, r2}
9; CHECK: bl throws_1
10define void @use_stm(i32 %a, i32 %b, i32 %c, i32* %d) local_unnamed_addr noreturn "no-frame-pointer-elim"="true" {
11entry:
12  %arrayidx = getelementptr inbounds i32, i32* %d, i32 2
13  store i32 %a, i32* %arrayidx, align 4
14  %arrayidx1 = getelementptr inbounds i32, i32* %d, i32 3
15  store i32 %b, i32* %arrayidx1, align 4
16  %arrayidx2 = getelementptr inbounds i32, i32* %d, i32 4
17  store i32 %c, i32* %arrayidx2, align 4
18  tail call void @throws_1(i32 %a, i32 %b, i32 %c) noreturn
19  unreachable
20}
21
22; Don't use STM: there is no available register to store
23; the address. We could transform this with some extra math, but
24; that currently isn't implemented.
25; CHECK-LABEL: no_stm:
26; CHECK: .save   {r7, lr}
27; CHECK: .setfp  r7, sp
28; CHECK: str r0,
29; CHECK: str r1,
30; CHECK: str r2,
31; CHECK: bl throws_2
32define void @no_stm(i32 %a, i32 %b, i32 %c, i32* %d) local_unnamed_addr noreturn "no-frame-pointer-elim"="true" {
33entry:
34  %arrayidx = getelementptr inbounds i32, i32* %d, i32 2
35  store i32 %a, i32* %arrayidx, align 4
36  %arrayidx1 = getelementptr inbounds i32, i32* %d, i32 3
37  store i32 %b, i32* %arrayidx1, align 4
38  %arrayidx2 = getelementptr inbounds i32, i32* %d, i32 4
39  store i32 %c, i32* %arrayidx2, align 4
40  tail call void @throws_2(i32 %a, i32 %b, i32 %c, i32* %d) noreturn
41  unreachable
42}
43
44
45declare void @throws_1(i32, i32, i32) noreturn
46declare void @throws_2(i32, i32, i32, i32*) noreturn
47