| # RUN: llc -mtriple thumbv5e -run-pass=machine-cse -o - %s | FileCheck %s |
| |
| # This is a contrived example made to expose a bug in |
| # MachineCSE, see PR32538. |
| |
| # MachineCSE must not remove this def of $cpsr: |
| # CHECK-LABEL: bb.1: |
| # CHECK: , $cpsr = tLSLri |
| |
| ... |
| --- |
| name: spam |
| registers: |
| - { id: 0, class: tgpr } |
| - { id: 1, class: tgpr } |
| - { id: 2, class: tgpr } |
| - { id: 3, class: tgpr } |
| liveins: |
| - { reg: '$r0', virtual-reg: '%0' } |
| body: | |
| bb.0: |
| liveins: $r0 |
| %0 = COPY $r0 |
| %1, $cpsr = tLSLri %0, 2, 14, $noreg |
| tCMPi8 %0, 5, 14, $noreg, implicit-def $cpsr |
| tBcc %bb.8, 8, $cpsr |
| |
| bb.1: |
| %2, $cpsr = tLSLri %0, 2, 14, $noreg |
| |
| bb.8: |
| liveins: $cpsr |
| %3 = COPY $cpsr |
| tSTRi killed %3, %0, 0, 14, $noreg |
| ... |
