# RUN: llc -O0 -run-pass=legalizer %s -o - | FileCheck %s --- | target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" target triple = "aarch64--" define void @test_anyext_crash() { entry: br label %block2 block2: %0 = trunc i16 0 to i8 %1 = uitofp i8 %0 to double br label %block2 } ... --- name: test_anyext_crash alignment: 4 legalized: false registers: - { id: 0, class: _, preferred-register: '' } - { id: 1, class: _, preferred-register: '' } - { id: 2, class: _, preferred-register: '' } body: | bb.1: ; Check we don't crash due to trying to legalize a dead instruction. ; CHECK-LABEL: test_anyext_crash ; CHECK-LABEL: bb.1: successors: %bb.2 %0(s16) = G_CONSTANT i16 0 bb.2: successors: %bb.2 %1(s8) = G_TRUNC %0(s16) %2(s64) = G_UITOFP %1(s8) G_BR %bb.2 ...