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1; RUN: llc -mtriple=thumbv7-apple-ios7.0 -o - %s -verify-machineinstrs | FileCheck %s2 3; The base register for the store is killed by the last instruction, but is4; actually also used during as part of the store itself. If an extra ADD is5; inserted, it should not kill the base.6define void @test_base_kill(i32 %v0, i32 %v1, ptr %addr) {7; CHECK-LABEL: test_base_kill:8; CHECK: adds [[NEWBASE:r[0-9]+]], r2, #49; CHECK: stm [[NEWBASE]]!, {r0, r1, r2}10 11 %addr.1 = getelementptr i32, ptr %addr, i32 112 store i32 %v0, ptr %addr.113 14 %addr.2 = getelementptr i32, ptr %addr, i32 215 store i32 %v1, ptr %addr.216 17 %addr.3 = getelementptr i32, ptr %addr, i32 318 %val = ptrtoint ptr %addr to i3219 store i32 %val, ptr %addr.320 21 ret void22}23 24; Similar, but it's not sufficient to look at just the last instruction (where25; liveness of the base is determined). An intervening instruction might be moved26; past it to form the STM.27define void @test_base_kill_mid(i32 %v0, ptr %addr, i32 %v1) {28; CHECK-LABEL: test_base_kill_mid:29; CHECK: adds [[NEWBASE:r[0-9]+]], r1, #430; CHECK: stm [[NEWBASE]]!, {r0, r1, r2}31 32 %addr.1 = getelementptr i32, ptr %addr, i32 133 store i32 %v0, ptr %addr.134 35 %addr.2 = getelementptr i32, ptr %addr, i32 236 %val = ptrtoint ptr %addr to i3237 store i32 %val, ptr %addr.238 39 %addr.3 = getelementptr i32, ptr %addr, i32 340 store i32 %v1, ptr %addr.341 42 ret void43}44