# RUN: llc -mtriple=aarch64-arm-none-eabi -o - %s \ # RUN: -run-pass dead-mi-elimination | FileCheck %s --- | @c = internal unnamed_addr global [3 x i8] zeroinitializer, align 4 @d = common dso_local local_unnamed_addr global i32 0, align 4 define dso_local i32 @main() local_unnamed_addr { %scevgep = getelementptr i8, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @c, i64 0, i64 1), i64 0 ret i32 0 } ... --- name: main tracksRegLiveness: true registers: - { id: 0, class: gpr64common, preferred-register: '' } - { id: 1, class: gpr64common, preferred-register: '' } - { id: 2, class: gpr64, preferred-register: '' } - { id: 3, class: gpr64common, preferred-register: '' } - { id: 4, class: gpr32, preferred-register: '' } - { id: 5, class: gpr32all, preferred-register: '' } - { id: 6, class: gpr64common, preferred-register: '' } body: | bb.0: successors: %bb.4(0x30000000), %bb.5(0x50000000) %0:gpr64common = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c CBZX killed %0, %bb.4 B %bb.5 bb.1: successors: %bb.3(0x04000000), %bb.2(0x7c000000) %1:gpr64common = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c %2:gpr64 = SUBSXri %1, 2, 0, implicit-def $nzcv Bcc 0, %bb.3, implicit $nzcv B %bb.2 bb.2: successors: %bb.1(0x80000000) %3:gpr64common = ADDXrr %6, %2 %4:gpr32 = LDRBBui killed %3, 1 :: (load (s8) from %ir.scevgep) %5:gpr32all = COPY %4 B %bb.1 bb.3: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp $x0 = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp RET_ReallyLR implicit $w0 bb.4: successors: %bb.5(0x80000000) bb.5: successors: %bb.1(0x80000000) ; CHECK: bb.5 ; CHECK-NOT: %6:gpr64common = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c %6:gpr64common = MOVaddr target-flags(aarch64-page) @c, target-flags(aarch64-pageoff, aarch64-nc) @c B %bb.1 ...