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821541ceec
Early versions of the ARMv7 reference manuals considered the sp register as a deprecated register for ldm/stm familiy of instructions. However, later versions such as ARM DDI 0406C.d added a note to the Appendix: D9.3 Use of the SP as a general-purpose register Most ARM instructions, unlike Thumb instructions, provide exactly the same access to the SP as to R0-R12. This means that it is possible to use the SP as a general-purpose register. Earlier issues of this manual deprecated the use of SP in an ARM instruction, in any way that is deprecated, not permitted, or not possible in the corresponding Thumb instruction. However, user feedback indicates a number of cases where these instructions are useful. Therefore, ARM no longer deprecates these instruction uses. Also Armv8 manuals no longer consider SP as deprecated register for ldm/ stm A32 instructions. Furthermore, GNU as also does not print a deprecated warning when using SP with those instructions. Drop deprecation warning for pop/ldm/push/stm instructions. Patch by: Stefan Agner. Differential Revision: https://reviews.llvm.org/D82692
219 lines
5.4 KiB
ArmAsm
219 lines
5.4 KiB
ArmAsm
@ RUN: llvm-mc -triple armv6t2-linux-eabi -filetype asm -o - %s 2>&1 \
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@ RUN: | FileCheck %s
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@ RUN: not llvm-mc -triple armv6t2-linux-eabi --fatal-warnings -filetype asm -o - %s 2>&1 \
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@ RUN: | FileCheck -check-prefix CHECK-ERROR %s
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@ RUN: not llvm-mc -triple armv7-linux-eabi -filetype asm -o - %s 2>&1 \
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@ RUN: | FileCheck %s -check-prefix CHECK -check-prefix CHECK-V7
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@ RUN: not llvm-mc -triple armv8-linux-eabi -filetype asm -o - %s 2>&1 \
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@ RUN: | FileCheck %s -check-prefix CHECK -check-prefix CHECK-V7
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.syntax unified
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.arm
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.global stm
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.type stm,%function
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stm:
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stm sp!, {r0, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK-ERROR: error: use of PC in the list is deprecated
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@ CHECK: stm sp!, {r0, pc}
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@ CHECK: ^
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stm r1!, {r0, sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stm r1!, {r0, sp, pc}
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@ CHECK: ^
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stm r2!, {sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stm r2!, {sp, pc}
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@ CHECK: ^
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stm sp!, {pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stm sp!, {pc}
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@ CHECK: ^
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.global stmda
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.type stmda,%function
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stmda:
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stmda sp!, {r0, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmda sp!, {r0, pc}
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@ CHECK: ^
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stmda r1!, {r0, sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmda r1!, {r0, sp, pc}
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@ CHECK: ^
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stmda r2!, {sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmda r2!, {sp, pc}
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@ CHECK: ^
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stmda sp!, {pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmda sp!, {pc}
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@ CHECK: ^
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.global stmdb
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.type stmdb,%function
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stmdb:
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stmdb sp!, {r0, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmdb sp!, {r0, pc}
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@ CHECK: ^
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stmdb r1!, {r0, sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmdb r1!, {r0, sp, pc}
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@ CHECK: ^
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stmdb r2!, {sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmdb r2!, {sp, pc}
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@ CHECK: ^
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stmdb sp!, {pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmdb sp!, {pc}
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@ CHECK: ^
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.global stmib
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.type stmib,%function
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stmib:
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stmib sp!, {r0, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmib sp!, {r0, pc}
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@ CHECK: ^
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stmib r1!, {r0, sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmib r1!, {r0, sp, pc}
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@ CHECK: ^
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stmib r2!, {sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmib r2!, {sp, pc}
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@ CHECK: ^
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stmib sp!, {pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: stmib sp!, {pc}
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@ CHECK: ^
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.global push
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.type push,%function
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push:
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push {r0, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: push {r0, pc}
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@ CHECK: ^
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push {r0, sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: push {r0, sp, pc}
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@ CHECK: ^
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push {sp, pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: push {sp, pc}
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@ CHECK: ^
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push {pc}
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@ CHECK: warning: use of PC in the list is deprecated
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@ CHECK: push {pc}
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@ CHECK: ^
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.global ldm
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.type ldm,%function
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ldm:
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ldm r0!, {r1, lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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ldm r0!, {lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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.global ldmda
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.type ldmda,%function
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ldmda:
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ldmda r0!, {r1, lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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ldmda r0!, {lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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.global ldmdb
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.type ldmdb,%function
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ldmdb:
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ldmdb r0!, {r1, lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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ldmdb r0!, {lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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.global ldmib
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.type ldmib,%function
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ldmib:
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ldmib r0!, {r1, lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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ldmib r0!, {lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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.global pop
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.type pop,%function
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pop:
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pop {r0, sp}
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@ CHECK-V7: error: writeback register not allowed in register list
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pop {sp}
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@ CHECK-V7: error: writeback register not allowed in register list
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pop {r0, lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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pop {lr, pc}
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@ CHECK: warning: use of LR and PC simultaneously in the list is deprecated
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.global valid_stm
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.type valid,%function
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valid_stm:
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stm r0!, {r0, sp}
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@ CHECK: stm r0!, {r0, sp}
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stm r0!, {sp}
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@ CHECK: stm r0!, {sp}
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stmda r0!, {r0, sp}
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@ CHECK: stmda r0!, {r0, sp}
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stmda r0!, {sp}
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@ CHECK: stmda r0!, {sp}
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stmdb r0!, {r0, sp}
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@ CHECK: stmdb r0!, {r0, sp}
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stmdb r0!, {sp}
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@ CHECK: stmdb r0!, {sp}
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stmib r0!, {r0, sp}
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@ CHECK: stmib r0!, {r0, sp}
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stmib r0!, {sp}
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@ CHECK: stmib r0!, {sp}
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stmdaeq r0, {r0}
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@ CHECK: stmdaeq r0, {r0}
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.global valid_push
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.type valid,%function
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valid_push:
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push {r0, sp}
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@ CHECK: push {r0, sp}
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push {sp}
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@ CHECK: push {sp}
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.global valid_ldm
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.type valid,%function
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valid_ldm:
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ldm r0!, {r1, sp}
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@ CHECK: ldm r0!, {r1, sp}
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ldm r0!, {sp}
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@ CHECK: ldm r0!, {sp}
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ldmda r0!, {r1, sp}
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@ CHECK: ldmda r0!, {r1, sp}
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ldmda r0!, {sp}
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@ CHECK: ldmda r0!, {sp}
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ldmdb r0!, {r1, sp}
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@ CHECK: ldmdb r0!, {r1, sp}
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ldmdb r0!, {sp}
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@ CHECK: ldmdb r0!, {sp}
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ldmib r0!, {r1, sp}
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@ CHECK: ldmib r0!, {r1, sp}
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ldmib r0!, {sp}
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@ CHECK: ldmib r0!, {sp}
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ldmdaeq r0, {r0}
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@ CHECK: ldmdaeq r0, {r0}
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.global valid_pop
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.type valid,%function
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valid_pop:
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pop {r0, pc}
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@ CHECK: pop {r0, pc}
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