multiselect-02.mir
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# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z10 -run-pass=finalize-isel -o - %s \
# RUN: | FileCheck %s
#
# Test that an instruction (ZEXT128) that uses custom insertion gets treated
# correctly also when it lies between two Select instructions that could
# potentially be handled together.
#
# CHECK-LABEL: bb.0.entry:
# CHECK-NOT: ZEXT128
--- |
declare void @bar(i32)
define i32 @fun() { entry: ret i32 0 }
---
name: fun
tracksRegLiveness: true
body: |
bb.0.entry:
%1:addr64bit = IMPLICIT_DEF
%0:gr32bit = LLC %1, 0, $noreg :: (load 1 from `i8* undef`)
CHI killed %0, 0, implicit-def $cc
%2:gr32bit = LHI 2
%3:gr32bit = LHI 8
%4:gr32bit = Select32 killed %3, killed %2, 14, 8, implicit $cc
%5:gr32bit = LHI 128
%7:gr64bit = IMPLICIT_DEF
%6:gr64bit = INSERT_SUBREG %7, killed %5, %subreg.subreg_l32
%8:gr128bit = ZEXT128 killed %6
%10:addr64bit = IMPLICIT_DEF
%9:gr128bit = DL %8, %10, 0, $noreg :: (load 4 from `i64* undef` + 4)
%11:gr32bit = COPY %9.subreg_l32
%12:gr64bit = LGHI 2
%13:gr64bit = LGHI 8
%14:gr64bit = Select64 killed %13, killed %12, 14, 8, implicit $cc
CR %4, %11, implicit-def $cc
%15:gr32bit = Select32 %11, %4, 14, 4, implicit $cc
ADJCALLSTACKDOWN 0, 0
$r2d = COPY %14
CallBRASL @bar, $r2d, csr_systemz, implicit-def dead $r14d, implicit-def dead $cc, implicit $fpc
ADJCALLSTACKUP 0, 0
$r2l = COPY %15
Return implicit $r2l
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