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| # RUN: llc -mtriple aarch64 -run-pass=early-tailduplication -verify-machineinstrs %s -o - 2>&1 | FileCheck %s
---
name: pluto
tracksRegLiveness: true
body: |
; This test checks that the COPY3 and COPY4 copies are correctly placed in the bb.5 block,
; instead of crashing.
; CHECK-LABEL: name: pluto
; CHECK: bb.0:
; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK: liveins: $x0
; CHECK: [[DEF:%[0-9]+]]:gpr32 = IMPLICIT_DEF
; CHECK: [[DEF1:%[0-9]+]]:gpr32common = IMPLICIT_DEF
; CHECK: [[DEF2:%[0-9]+]]:gpr64 = IMPLICIT_DEF
; CHECK: [[DEF3:%[0-9]+]]:gpr64common = IMPLICIT_DEF
; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1
; CHECK: [[FMOVD0_:%[0-9]+]]:fpr64 = FMOVD0
; CHECK: TBNZW [[DEF]], 0, %bb.1
; CHECK: B %bb.2
; CHECK: bb.1:
; CHECK: successors: %bb.9(0x80000000)
; CHECK: [[LDRXui:%[0-9]+]]:gpr64 = LDRXui [[DEF3]], 0 :: (load 8 from `i64* undef`)
; CHECK: B %bb.9
; CHECK: bb.2:
; CHECK: successors: %bb.3(0x40000000), %bb.4(0x40000000)
; CHECK: $wzr = SUBSWri [[DEF1]], 19, 0, implicit-def $nzcv
; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv
; CHECK: TBNZW [[CSINCWr]], 0, %bb.3
; CHECK: B %bb.4
; CHECK: bb.3:
; CHECK: successors: %bb.9(0x80000000)
; CHECK: [[SCVTFUXDri:%[0-9]+]]:fpr64 = SCVTFUXDri [[DEF2]]
; CHECK: [[COPY:%[0-9]+]]:gpr64 = COPY [[SCVTFUXDri]]
; CHECK: [[COPY1:%[0-9]+]]:fpr64 = COPY [[SCVTFUXDri]]
; CHECK: B %bb.9
; CHECK: bb.4:
; CHECK: successors: %bb.5(0x40000000), %bb.8(0x40000000)
; CHECK: TBNZW [[DEF]], 0, %bb.5
; CHECK: B %bb.8
; CHECK: bb.5:
; CHECK: successors: %bb.9(0x80000000)
; CHECK: [[COPY2:%[0-9]+]]:fpr64 = COPY [[DEF2]]
; CHECK: [[COPY3:%[0-9]+]]:gpr64 = COPY [[COPY2]]
; CHECK: [[COPY4:%[0-9]+]]:fpr64 = COPY [[DEF2]]
; CHECK: B %bb.9
; CHECK: bb.8:
; CHECK: successors: %bb.9(0x80000000)
; CHECK: bb.9:
; CHECK: [[PHI:%[0-9]+]]:gpr64 = PHI [[LDRXui]], %bb.1, [[FMOVD0_]], %bb.8, [[COPY]], %bb.3, [[COPY3]], %bb.5
; CHECK: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
; CHECK: $d0 = COPY [[PHI]]
; CHECK: BL @pluto, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $d0, implicit-def $d0
; CHECK: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
; CHECK: $w0 = COPY [[MOVi32imm]]
; CHECK: RET_ReallyLR implicit $w0
bb.1:
successors: %bb.2(0x40000000), %bb.3(0x40000000)
liveins: $x0
%1:gpr32 = IMPLICIT_DEF
%2:gpr32common = IMPLICIT_DEF
%5:gpr64 = IMPLICIT_DEF
%9:gpr64common = IMPLICIT_DEF
%13:gpr32 = MOVi32imm 1
%14:fpr64 = FMOVD0
TBNZW %1, 0, %bb.2
B %bb.3
bb.2:
successors: %bb.8(0x80000000)
%8:gpr64 = LDRXui %9, 0 :: (load 8 from `i64* undef`)
B %bb.8
bb.3:
successors: %bb.4(0x40000000), %bb.5(0x40000000)
$wzr = SUBSWri %2, 19, 0, implicit-def $nzcv
%15:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv
TBNZW %15, 0, %bb.4
B %bb.5
bb.4:
successors: %bb.7(0x80000000)
%6:fpr64 = SCVTFUXDri %5
B %bb.7
bb.5:
successors: %bb.6(0x40000000), %bb.9(0x40000000)
TBNZW %1, 0, %bb.6
B %bb.9
bb.6:
successors: %bb.7(0x80000000)
bb.7:
successors: %bb.8(0x80000000)
%7:fpr64 = PHI %6, %bb.4, %5, %bb.6
bb.8:
successors: %bb.10(0x80000000)
%10:gpr64 = PHI %8, %bb.2, %7, %bb.7
B %bb.10
bb.9:
successors: %bb.10(0x80000000)
bb.10:
%11:gpr64 = PHI %10, %bb.8, %14, %bb.9
ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
$d0 = COPY %11
BL @pluto, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $d0, implicit-def $d0
ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
$w0 = COPY %13
RET_ReallyLR implicit $w0
...
|