1# RUN: llc -mtriple=aarch64-arm-none-eabi -o - %s \ 2# RUN: -run-pass dead-mi-elimination | FileCheck %s 3--- | 4 @c = internal unnamed_addr global [3 x i8] zeroinitializer, align 4 5 @d = common dso_local local_unnamed_addr global i32 0, align 4 6 7 define dso_local i32 @main() local_unnamed_addr { 8 %scevgep = getelementptr i8, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @c, i64 0, i64 1), i64 0 9 ret i32 0 10 } 11... 12--- 13name: main 14tracksRegLiveness: true 15registers: 16 - { id: 0, class: gpr64, preferred-register: '' } 17 - { id: 1, class: gpr64common, preferred-register: '' } 18 - { id: 2, class: gpr64, preferred-register: '' } 19 - { id: 3, class: gpr64common, preferred-register: '' } 20 - { id: 4, class: gpr32, preferred-register: '' } 21 - { id: 5, class: gpr32all, preferred-register: '' } 22 - { id: 6, class: gpr64, preferred-register: '' } 23body: | 24 bb.0: 25 successors: %bb.4(0x30000000), %bb.5(0x50000000) 26 27 %0:gpr64 = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c 28 CBZX killed %0, %bb.4 29 B %bb.5 30 31 bb.1: 32 successors: %bb.3(0x04000000), %bb.2(0x7c000000) 33 34 %1:gpr64common = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c 35 %2:gpr64 = SUBSXri %1, 2, 0, implicit-def $nzcv 36 Bcc 0, %bb.3, implicit $nzcv 37 B %bb.2 38 39 bb.2: 40 successors: %bb.1(0x80000000) 41 %3:gpr64common = ADDXrr %6, %2 42 %4:gpr32 = LDRBBui killed %3, 1 :: (load 1 from %ir.scevgep) 43 %5:gpr32all = COPY %4 44 B %bb.1 45 46 bb.3: 47 ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp 48 $x0 = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c 49 ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp 50 RET_ReallyLR implicit $w0 51 52 bb.4: 53 successors: %bb.5(0x80000000) 54 55 bb.5: 56 successors: %bb.1(0x80000000) 57 ; CHECK: bb.5 58 ; CHECK-NOT: %6:gpr64 = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c 59 %6:gpr64 = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c 60 B %bb.1 61... 62