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# RUN: llc -o - %s -mtriple=s390x-linux-gnu -mcpu=z15 -start-before=systemz-post-rewrite \
# RUN: -stop-after=machine-cp -verify-machineinstrs 2>&1 | FileCheck %s
# The chained SELRMux:es both has two operands with the same register but
# where one of the operands have been marked as undef (resulting from
# early-ifcvt). Check that the resulting COPY after machine-cp is from $r0l
# to $r2l.
# CHECK: name: fun0
# CHECK: $r2l = COPY $r0l
--- |
@Res = global i32 0, align 4
@Z = global i32 0, align 4
define signext i32 @fun0() { ret i32 0 }
...
---
name: fun0
tracksRegLiveness: true
body: |
bb.0:
successors: %bb.1(0x80000000)
renamable $r0l = LRL @Z :: (dereferenceable load (s32) from @Z)
renamable $r1l = LHIMux 1
bb.1:
successors: %bb.1(0x7c000000), %bb.2(0x04000000)
liveins: $r0l, $r1l
CHIMux renamable $r1l, 0, implicit-def $cc
renamable $r2l = SELRMux undef renamable $r0l, renamable $r0l, 14, 6, implicit $cc
renamable $r2l = SELRMux undef renamable $r2l, killed renamable $r2l, 14, 6, implicit $cc
BRC 14, 8, %bb.1, implicit killed $cc
J %bb.2
bb.2:
liveins: $r2l
STRL renamable $r2l, @Res :: (store (s32) into @Res)
renamable $r2d = LGFR killed renamable $r2l
Return implicit $r2d
...
|
