| # 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 |
| ... |