127 lines
3.3 KiB
Text
127 lines
3.3 KiB
Text
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# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z15 -O3 -start-before=finalize-isel %s -o - \
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# RUN: -verify-machineinstrs | FileCheck %s
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#
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# Test that the exrl used for the remainder of a memset (after xc loop) is
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# not rescheduled incorrectly in a way that interfers with CC liveness.
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--- |
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define void @fun(ptr %Src, ptr %Dst, i64 %Len) { ret void }
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...
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# CHECK-LABEL: fun:
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# CHECK: exrl %r4, .Ltmp0
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# CHECK-NEXT: cgije
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# CHECK: exrl %r4, .Ltmp1
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# CHECK-NEXT: tmll
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# CHECK-NEXT: jne
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# CHECK: .Ltmp1:
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# CHECK-NEXT: xc 0(1,%r3), 0(%r2)
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# CHECK-NEXT: .Ltmp0:
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# CHECK-NEXT: xc 0(1,%r14), 0(%r14)
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---
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name: fun
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alignment: 16
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tracksRegLiveness: true
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registers:
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- { id: 0, class: grx32bit }
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- { id: 1, class: addr64bit }
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- { id: 2, class: addr64bit }
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- { id: 3, class: gr64bit }
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- { id: 4, class: gr64bit }
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- { id: 5, class: grx32bit }
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- { id: 6, class: addr64bit }
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- { id: 7, class: addr64bit }
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- { id: 8, class: gr64bit }
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- { id: 9, class: gr128bit }
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- { id: 10, class: gr64bit }
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- { id: 11, class: gr32bit }
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- { id: 12, class: gr32bit }
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- { id: 13, class: gr32bit }
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- { id: 14, class: addr64bit }
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- { id: 15, class: gr64bit }
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- { id: 16, class: gr64bit }
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- { id: 17, class: addr64bit }
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- { id: 18, class: gr64bit }
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- { id: 19, class: vr128bit }
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liveins:
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- { reg: '$r2d', virtual-reg: '%1' }
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- { reg: '$r3d', virtual-reg: '%2' }
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- { reg: '$r4d', virtual-reg: '%3' }
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frameInfo:
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maxAlignment: 1
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machineFunctionInfo: {}
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jumpTable:
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kind: block-address
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entries:
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- id: 0
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blocks: [ '%bb.1', '%bb.2', '%bb.5', '%bb.6', '%bb.7', '%bb.7',
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'%bb.7', '%bb.7', '%bb.7', '%bb.7', '%bb.7', '%bb.7',
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'%bb.2', '%bb.5', '%bb.6', '%bb.7', '%bb.1', '%bb.2',
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'%bb.7', '%bb.7', '%bb.5' ]
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body: |
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bb.0:
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liveins: $r2d, $r3d, $r4d
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%3:gr64bit = COPY $r4d
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%2:addr64bit = COPY $r3d
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%1:addr64bit = COPY $r2d
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%4:gr64bit = LGHI 0
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bb.8:
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successors: %bb.1(0x00000000), %bb.2(0x00000000), %bb.5(0x00000000), %bb.6(0x00000000), %bb.7(0x80000000)
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%6:addr64bit = SLLG %4, $noreg, 3
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%7:addr64bit = LARL %jump-table.0
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BI killed %6, 0, killed %7 :: (load (s64) from jump-table)
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bb.1:
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successors:
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bb.2:
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successors: %bb.4(0x30000000), %bb.3(0x50000000)
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%8:gr64bit = LG %1, 0, $noreg
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%9:gr128bit = FLOGR killed %8, implicit-def dead $cc
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%10:gr64bit = COPY %9.subreg_h64
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%11:gr32bit = COPY %10.subreg_l32
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%12:gr32bit = LHIMux 64
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%13:gr32bit = nuw nsw SRK killed %12, killed %11, implicit-def dead $cc
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%0:grx32bit = COPY %13
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%14:addr64bit = AGHIK %3, -1, implicit-def dead $cc
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XCReg %1, 0, %1, 0, %14, implicit-def dead $cc
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XCReg %2, 0, %1, 0, %14, implicit-def dead $cc
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TMLMux %13, 7, implicit-def $cc
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BRC 15, 8, %bb.4, implicit $cc
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J %bb.3
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bb.3:
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successors:
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%16:gr64bit = IMPLICIT_DEF
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%15:gr64bit = INSERT_SUBREG %16, %0, %subreg.subreg_l32
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%18:gr64bit = IMPLICIT_DEF
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%17:addr64bit = RISBGN %18, killed %15, 54, 185, 3
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%19:vr128bit = VGBM 0
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VST killed %19, killed %17, 16, $noreg
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bb.4:
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successors:
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bb.5:
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successors:
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bb.6:
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successors:
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bb.7:
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Return
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...
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