26 lines · plain
1# RUN: not --crash llc -mtriple=aarch64 -o /dev/null -run-pass=none -verify-machineinstrs %s 2>&1 | FileCheck %s2# REQUIRES: aarch64-registered-target3 4# Undef uses are illegal for generic vregs.5 6---7name: test_undef_use8liveins:9body: |10 bb.0:11 %0:_(s32) = G_CONSTANT i32 012 13 ; Test generic instruction14 ; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***15 G_STORE %0, undef %1:_(p0) :: (store (s32))16 17 ; Make sure this fails on a post-isel generic instruction.18 ; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***19 $x0 = COPY undef %2:_(s64)20 21 ; Make sure this fails with a target instruction22 ; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***23 RET_ReallyLR implicit $x0, implicit undef %3:_(s32)24...25 26