| # 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, _ |
| tCMPi8 %0, 5, 14, _, implicit-def %cpsr |
| tBcc %bb.8, 8, %cpsr |
| |
| bb.1: |
| %2, %cpsr = tLSLri %0, 2, 14, _ |
| |
| bb.8: |
| liveins: %cpsr |
| %3 = COPY %cpsr |
| tSTRi killed %3, %0, 0, 14, _ |
| ... |
