7ed40b5259
https://github.com/llvm/llvm-project/issues/173483 constrains some registers to be f16. A bitcast is inserted to bitcast a v2i8 to an f16 due to this constrain. Eventually this bitcast is routed through `LowerBITCAST` due to the type being illegal. This would cause a crash. By converting this v2i8 to an i16, we can continue to use the existing path to lower the bitcast.
39 lines
1.2 KiB
LLVM
39 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
|
|
; RUN: llc < %s -mtriple=aarch64-none-linux-gnu -verify-machineinstrs | FileCheck --check-prefix=LE %s
|
|
; RUN: llc < %s -mtriple=aarch64_be-none-linux-gnu -verify-machineinstrs | FileCheck --check-prefix=BE %s
|
|
|
|
; Check for the crash in https://github.com/llvm/llvm-project/issues/173483
|
|
define void @f(<2 x i8> %1) {
|
|
; LE-LABEL: f:
|
|
; LE: // %bb.0:
|
|
; LE-NEXT: sub sp, sp, #16
|
|
; LE-NEXT: .cfi_def_cfa_offset 16
|
|
; LE-NEXT: // kill: def $d0 killed $d0 def $q0
|
|
; LE-NEXT: mov s1, v0.s[1]
|
|
; LE-NEXT: str b0, [sp, #12]
|
|
; LE-NEXT: stur b1, [sp, #13]
|
|
; LE-NEXT: ldrh w8, [sp, #12]
|
|
; LE-NEXT: fmov s0, w8
|
|
; LE-NEXT: //APP
|
|
; LE-NEXT: //NO_APP
|
|
; LE-NEXT: add sp, sp, #16
|
|
; LE-NEXT: ret
|
|
;
|
|
; BE-LABEL: f:
|
|
; BE: // %bb.0:
|
|
; BE-NEXT: sub sp, sp, #16
|
|
; BE-NEXT: .cfi_def_cfa_offset 16
|
|
; BE-NEXT: rev64 v0.2s, v0.2s
|
|
; BE-NEXT: mov s1, v0.s[1]
|
|
; BE-NEXT: str b0, [sp, #12]
|
|
; BE-NEXT: stur b1, [sp, #13]
|
|
; BE-NEXT: ldrh w8, [sp, #12]
|
|
; BE-NEXT: fmov s0, w8
|
|
; BE-NEXT: //APP
|
|
; BE-NEXT: //NO_APP
|
|
; BE-NEXT: add sp, sp, #16
|
|
; BE-NEXT: ret
|
|
call void asm sideeffect "", "w"(<2 x i8> %1)
|
|
ret void
|
|
}
|