1 ; RUN: llc -mtriple=thumbv7-apple-ios7.0 -o - %s -verify-machineinstrs | FileCheck %s
3 ; The base register for the store is killed by the last instruction, but is
4 ; actually also used during as part of the store itself. If an extra ADD is
5 ; inserted, it should not kill the base.
6 define void @test_base_kill(i32 %v0, i32 %v1, i32* %addr) {
7 ; CHECK-LABEL: test_base_kill:
8 ; CHECK: adds [[NEWBASE:r[0-9]+]], r2, #4
9 ; CHECK: stm [[NEWBASE]]!, {r0, r1, r2}
11 %addr.1 = getelementptr i32, i32* %addr, i32 1
12 store i32 %v0, i32* %addr.1
14 %addr.2 = getelementptr i32, i32* %addr, i32 2
15 store i32 %v1, i32* %addr.2
17 %addr.3 = getelementptr i32, i32* %addr, i32 3
18 %val = ptrtoint i32* %addr to i32
19 store i32 %val, i32* %addr.3
24 ; Similar, but it's not sufficient to look at just the last instruction (where
25 ; liveness of the base is determined). An intervening instruction might be moved
26 ; past it to form the STM.
27 define void @test_base_kill_mid(i32 %v0, i32* %addr, i32 %v1) {
28 ; CHECK-LABEL: test_base_kill_mid:
29 ; CHECK: adds [[NEWBASE:r[0-9]+]], r1, #4
30 ; CHECK: stm [[NEWBASE]]!, {r0, r1, r2}
32 %addr.1 = getelementptr i32, i32* %addr, i32 1
33 store i32 %v0, i32* %addr.1
35 %addr.2 = getelementptr i32, i32* %addr, i32 2
36 %val = ptrtoint i32* %addr to i32
37 store i32 %val, i32* %addr.2
39 %addr.3 = getelementptr i32, i32* %addr, i32 3
40 store i32 %v1, i32* %addr.3