# 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 ...