| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| # RUN: llc -mtriple aarch64 -run-pass=aarch64-postlegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s |
| |
| ... |
| --- |
| name: delete_store_undef |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.1.entry: |
| liveins: $x0 |
| |
| ; A store of an implicit def can safely be deleted before or after |
| ; legalization. |
| |
| ; CHECK-LABEL: name: delete_store_undef |
| ; CHECK: liveins: $x0 |
| ; CHECK-NOT: G_STORE |
| ; CHECK: RET_ReallyLR |
| %0:_(p0) = COPY $x0 |
| %1:_(s32) = G_IMPLICIT_DEF |
| G_STORE %1(s32), %0(p0) :: (store 4) |
| RET_ReallyLR |
| |
| ... |
