dbcf9e2ee4
Surprisingly, one of the three interference checks in LiveRegMatrix was using the main live range instead of the apropriate subregister range resulting in unnecessarily conservative results. llvm-svn: 296722
25 lines
786 B
YAML
25 lines
786 B
YAML
# RUN: llc -o - %s -mtriple=amdgcn--amdhsa -verify-machineinstrs -run-pass=greedy,virtregrewriter | FileCheck %s
|
|
---
|
|
# We should not detect any interference between v0/v1 here and only allocate
|
|
# sgpr0-sgpr3.
|
|
#
|
|
# CHECK-LABEL: func0
|
|
# CHECK: S_NOP 0, implicit-def %sgpr0
|
|
# CHECK: S_NOP 0, implicit-def %sgpr3
|
|
# CHECK: S_NOP 0, implicit-def %sgpr1
|
|
# CHECK: S_NOP 0, implicit-def %sgpr2
|
|
# CHECK: S_NOP 0, implicit %sgpr0, implicit %sgpr3
|
|
# CHECK: S_NOP 0, implicit %sgpr1, implicit %sgpr2
|
|
name: func0
|
|
body: |
|
|
bb.0:
|
|
S_NOP 0, implicit-def undef %0.sub0 : sreg_128
|
|
S_NOP 0, implicit-def %0.sub3
|
|
S_NOP 0, implicit-def undef %1.sub1 : sreg_128
|
|
S_NOP 0, implicit-def %1.sub2
|
|
|
|
|
|
S_NOP 0, implicit %0.sub0, implicit %0.sub3
|
|
S_NOP 0, implicit %1.sub1, implicit %1.sub2
|
|
...
|