mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 11:13:28 +01:00
d4c615be8c
Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
15 lines
516 B
YAML
15 lines
516 B
YAML
# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -run-pass=postrapseudos -o - %s | FileCheck %s
|
|
#
|
|
# Test that a COPY with an undef source operand gets handled like an identity
|
|
# copy rather than lowered into a target instruction with the undef flag
|
|
# dropped.
|
|
---
|
|
# CHECK-LABEL: name: undef_copy
|
|
# CHECK: $r13d = KILL undef $r0d, implicit killed $r12q, implicit-def $r12q
|
|
name: undef_copy
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $r12q
|
|
$r13d = COPY undef $r0d, implicit killed $r12q, implicit-def $r12q
|