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|
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -mtriple=x86_64-unknown-linux-gnu -run-pass=tailduplication -tail-dup-pred-size=1 -tail-dup-succ-size=1 %s -o - | FileCheck %s
#
# Check that only the computed gotos are duplicated aggressively.
#
--- |
@computed_goto.dispatch = constant [5 x ptr] [ptr null, ptr blockaddress(@computed_goto, %bb1), ptr blockaddress(@computed_goto, %bb2), ptr blockaddress(@computed_goto, %bb3), ptr blockaddress(@computed_goto, %bb4)]
declare i64 @f0()
declare i64 @f1()
declare i64 @f2()
declare i64 @f3()
declare i64 @f4()
declare i64 @f5()
define void @computed_goto() {
start:
ret void
bb1:
ret void
bb2:
ret void
bb3:
ret void
bb4:
ret void
}
define void @jump_table() { ret void }
define void @jump_table_pic() { ret void }
...
---
name: computed_goto
alignment: 1
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: computed_goto
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: CALL64pcrel32 target-flags(x86-plt) @f0, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY $rax
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64_nosp = COPY [[COPY]]
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64_nosp = COPY [[COPY1]]
; CHECK-NEXT: JMP64m $noreg, 8, [[COPY2]], @computed_goto.dispatch, $noreg
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.bb1 (ir-block-address-taken %ir-block.bb1):
; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: CALL64pcrel32 target-flags(x86-plt) @f1, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr64 = COPY $rax
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64_nosp = COPY [[COPY3]]
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64_nosp = COPY [[COPY1]]
; CHECK-NEXT: JMP64m $noreg, 8, [[COPY2]], @computed_goto.dispatch, $noreg
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.bb2 (ir-block-address-taken %ir-block.bb2):
; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: CALL64pcrel32 target-flags(x86-plt) @f2, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr64 = COPY $rax
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64_nosp = COPY [[COPY4]]
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64_nosp = COPY [[COPY1]]
; CHECK-NEXT: JMP64m $noreg, 8, [[COPY2]], @computed_goto.dispatch, $noreg
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.bb3 (ir-block-address-taken %ir-block.bb3):
; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: CALL64pcrel32 target-flags(x86-plt) @f3, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
; CHECK-NEXT: [[COPY5:%[0-9]+]]:gr64 = COPY $rax
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64_nosp = COPY [[COPY5]]
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64_nosp = COPY [[COPY1]]
; CHECK-NEXT: JMP64m $noreg, 8, [[COPY2]], @computed_goto.dispatch, $noreg
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4.bb4 (ir-block-address-taken %ir-block.bb4):
; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: CALL64pcrel32 target-flags(x86-plt) @f4, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr64 = COPY $rax
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64_nosp = COPY [[COPY6]]
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64_nosp = COPY [[COPY1]]
; CHECK-NEXT: JMP64m $noreg, 8, [[COPY2]], @computed_goto.dispatch, $noreg
bb.0:
successors: %bb.5(0x80000000)
CALL64pcrel32 target-flags(x86-plt) @f0, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
%0:gr64 = COPY $rax
%6:gr64_nosp = COPY %0
JMP_1 %bb.5
bb.1.bb1 (ir-block-address-taken %ir-block.bb1):
successors: %bb.5(0x80000000)
CALL64pcrel32 target-flags(x86-plt) @f1, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
%1:gr64 = COPY $rax
%6:gr64_nosp = COPY %1
JMP_1 %bb.5
bb.2.bb2 (ir-block-address-taken %ir-block.bb2):
successors: %bb.5(0x80000000)
CALL64pcrel32 target-flags(x86-plt) @f2, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
%2:gr64 = COPY $rax
%6:gr64_nosp = COPY %2
JMP_1 %bb.5
bb.3.bb3 (ir-block-address-taken %ir-block.bb3):
successors: %bb.5(0x80000000)
CALL64pcrel32 target-flags(x86-plt) @f3, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
%3:gr64 = COPY $rax
%6:gr64_nosp = COPY %3
JMP_1 %bb.5
bb.4.bb4 (ir-block-address-taken %ir-block.bb4):
successors: %bb.5(0x80000000)
CALL64pcrel32 target-flags(x86-plt) @f4, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
%4:gr64 = COPY $rax
%6:gr64_nosp = COPY %4
bb.5:
successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000)
%5:gr64_nosp = COPY %6
JMP64m $noreg, 8, %5, @computed_goto.dispatch, $noreg
...
|
