diff --git a/llvm/include/llvm/CodeGen/MachineInstr.h b/llvm/include/llvm/CodeGen/MachineInstr.h index b26cabe801ee8..102b1eb07358e 100644 --- a/llvm/include/llvm/CodeGen/MachineInstr.h +++ b/llvm/include/llvm/CodeGen/MachineInstr.h @@ -994,17 +994,8 @@ class MachineInstr /// Return true if this is an indirect branch, such as a /// branch through a register. - bool isIndirectBranch(QueryType Type = AnyInBundle, - bool IncludeJumpTable = true) const { - return hasProperty(MCID::IndirectBranch, Type) && - (IncludeJumpTable || !llvm::any_of(operands(), [](const auto &Op) { - return Op.isJTI(); - })); - } - - bool isComputedGoto(QueryType Type = AnyInBundle) const { - // Jump tables are not considered computed gotos. - return isIndirectBranch(Type, /*IncludeJumpTable=*/false); + bool isIndirectBranch(QueryType Type = AnyInBundle) const { + return hasProperty(MCID::IndirectBranch, Type); } /// Return true if this is a branch which may fall diff --git a/llvm/lib/CodeGen/TailDuplicator.cpp b/llvm/lib/CodeGen/TailDuplicator.cpp index 4a2d1355485da..abca8b76081e7 100644 --- a/llvm/lib/CodeGen/TailDuplicator.cpp +++ b/llvm/lib/CodeGen/TailDuplicator.cpp @@ -601,11 +601,8 @@ bool TailDuplicator::shouldTailDuplicate(bool IsSimple, // that rearrange the predecessors of the indirect branch. bool HasIndirectbr = false; - bool HasComputedGoto = false; - if (!TailBB.empty()) { + if (!TailBB.empty()) HasIndirectbr = TailBB.back().isIndirectBranch(); - HasComputedGoto = TailBB.back().isComputedGoto(); - } if (HasIndirectbr && PreRegAlloc) MaxDuplicateCount = TailDupIndirectBranchSize; @@ -663,12 +660,7 @@ bool TailDuplicator::shouldTailDuplicate(bool IsSimple, // Duplicating a BB which has both multiple predecessors and successors will // may cause huge amount of PHI nodes. If we want to remove this limitation, // we have to address https://github.com/llvm/llvm-project/issues/78578. - // NB. This basically unfactors computed gotos that were factored early on in - // the compilation process to speed up edge based data flow. If we do not - // unfactor them again, it can seriously pessimize code with many computed - // jumps in the source code, such as interpreters. Therefore we do not - // restrict the computed gotos. - if (!HasComputedGoto && TailBB.pred_size() > TailDupPredSize && + if (TailBB.pred_size() > TailDupPredSize && TailBB.succ_size() > TailDupSuccSize) { // If TailBB or any of its successors contains a phi, we may have to add a // large number of additional phis with additional incoming values. diff --git a/llvm/test/CodeGen/X86/tail-dup-computed-goto.mir b/llvm/test/CodeGen/X86/tail-dup-computed-goto.mir deleted file mode 100644 index a472dc67d8d51..0000000000000 --- a/llvm/test/CodeGen/X86/tail-dup-computed-goto.mir +++ /dev/null @@ -1,255 +0,0 @@ -# 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=early-tailduplication -tail-dup-pred-size=1 -tail-dup-succ-size=1 %s -o - | FileCheck %s -# Check that only the computed goto is not be restrict by tail-dup-pred-size and tail-dup-succ-size. ---- | - declare i64 @f0() - declare i64 @f1() - declare i64 @f2() - declare i64 @f3() - declare i64 @f4() - declare i64 @f5() - @computed_goto.dispatch = external global [5 x ptr] - define void @computed_goto() { ret void } - define void @jump_table() { ret void } -... ---- -name: computed_goto -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: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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, [[COPY1]], @computed_goto.dispatch, $noreg - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.1: - ; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr64_nosp = COPY [[COPY3]] - ; CHECK-NEXT: [[COPY5:%[0-9]+]]:gr64_nosp = COPY [[COPY4]] - ; CHECK-NEXT: JMP64m $noreg, 8, [[COPY4]], @computed_goto.dispatch, $noreg - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.2: - ; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY7:%[0-9]+]]:gr64_nosp = COPY [[COPY6]] - ; CHECK-NEXT: [[COPY8:%[0-9]+]]:gr64_nosp = COPY [[COPY7]] - ; CHECK-NEXT: JMP64m $noreg, 8, [[COPY7]], @computed_goto.dispatch, $noreg - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.3: - ; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY9:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY10:%[0-9]+]]:gr64_nosp = COPY [[COPY9]] - ; CHECK-NEXT: [[COPY11:%[0-9]+]]:gr64_nosp = COPY [[COPY10]] - ; CHECK-NEXT: JMP64m $noreg, 8, [[COPY10]], @computed_goto.dispatch, $noreg - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.4: - ; CHECK-NEXT: successors: %bb.1(0x20000000), %bb.2(0x20000000), %bb.3(0x20000000), %bb.4(0x20000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY12:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY13:%[0-9]+]]:gr64_nosp = COPY [[COPY12]] - ; CHECK-NEXT: [[COPY14:%[0-9]+]]:gr64_nosp = COPY [[COPY13]] - ; CHECK-NEXT: JMP64m $noreg, 8, [[COPY13]], @computed_goto.dispatch, $noreg - bb.0: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f0, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %6:gr64 = COPY $rax - %0:gr64 = COPY %6 - JMP_1 %bb.5 - - bb.1: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f1, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %10:gr64 = COPY $rax - %1:gr64 = COPY %10 - JMP_1 %bb.5 - - bb.2: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f2, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %9:gr64 = COPY $rax - %2:gr64 = COPY %9 - JMP_1 %bb.5 - - bb.3: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f3, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %8:gr64 = COPY $rax - %3:gr64 = COPY %8 - JMP_1 %bb.5 - - bb.4: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f4, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %7:gr64 = COPY $rax - %4:gr64 = COPY %7 - - bb.5: - successors: %bb.1, %bb.2, %bb.3, %bb.4 - - %5:gr64_nosp = PHI %0, %bb.0, %4, %bb.4, %3, %bb.3, %2, %bb.2, %1, %bb.1 - JMP64m $noreg, 8, %5, @computed_goto.dispatch, $noreg - -... ---- -name: jump_table -tracksRegLiveness: true -jumpTable: - kind: block-address - entries: - - id: 0 - blocks: [ '%bb.2', '%bb.3', '%bb.4', '%bb.5', '%bb.6' ] -body: | - ; CHECK-LABEL: name: jump_table - ; CHECK: bb.0: - ; CHECK-NEXT: successors: %bb.1(0x80000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64 = COPY [[COPY]] - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.1: - ; CHECK-NEXT: successors: %bb.3(0x1999999a), %bb.4(0x1999999a), %bb.5(0x1999999a), %bb.6(0x1999999a), %bb.7(0x1999999a) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: [[PHI:%[0-9]+]]:gr64 = PHI [[COPY1]], %bb.0, %3, %bb.7, %4, %bb.6, %5, %bb.5, %6, %bb.4, %7, %bb.3 - ; CHECK-NEXT: [[DEC64r:%[0-9]+]]:gr64_nosp = DEC64r [[PHI]], implicit-def dead $eflags - ; CHECK-NEXT: JMP64m $noreg, 8, [[DEC64r]], %jump-table.0, $noreg :: (load (s64) from jump-table) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.3: - ; CHECK-NEXT: successors: %bb.1(0x80000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr64 = COPY [[COPY2]] - ; CHECK-NEXT: JMP_1 %bb.1 - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.4: - ; CHECK-NEXT: successors: %bb.1(0x80000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY5:%[0-9]+]]:gr64 = COPY [[COPY4]] - ; CHECK-NEXT: JMP_1 %bb.1 - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.5: - ; CHECK-NEXT: successors: %bb.1(0x80000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY7:%[0-9]+]]:gr64 = COPY [[COPY6]] - ; CHECK-NEXT: JMP_1 %bb.1 - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.6: - ; CHECK-NEXT: successors: %bb.1(0x80000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; 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: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY8:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY9:%[0-9]+]]:gr64 = COPY [[COPY8]] - ; CHECK-NEXT: JMP_1 %bb.1 - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.7: - ; CHECK-NEXT: successors: %bb.1(0x80000000) - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: CALL64pcrel32 target-flags(x86-plt) @f5, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - ; CHECK-NEXT: [[COPY10:%[0-9]+]]:gr64 = COPY $rax - ; CHECK-NEXT: [[COPY11:%[0-9]+]]:gr64 = COPY [[COPY10]] - ; CHECK-NEXT: JMP_1 %bb.1 - ; CHECK-NEXT: {{ $}} - ; CHECK-NEXT: bb.8: - bb.0: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f0, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %7:gr64 = COPY $rax - %0:gr64 = COPY %7 - - bb.1: - %1:gr64 = PHI %0, %bb.0, %6, %bb.6, %5, %bb.5, %4, %bb.4, %3, %bb.3, %2, %bb.2 - %8:gr64_nosp = DEC64r %1, implicit-def dead $eflags - - bb.8: - successors: %bb.2(0x1999999a), %bb.3(0x1999999a), %bb.4(0x1999999a), %bb.5(0x1999999a), %bb.6(0x1999999a) - - JMP64m $noreg, 8, %8, %jump-table.0, $noreg :: (load (s64) from jump-table) - - bb.2: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f1, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %13:gr64 = COPY $rax - %2:gr64 = COPY %13 - JMP_1 %bb.1 - - bb.3: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f2, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %12:gr64 = COPY $rax - %3:gr64 = COPY %12 - JMP_1 %bb.1 - - bb.4: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f3, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %11:gr64 = COPY $rax - %4:gr64 = COPY %11 - JMP_1 %bb.1 - - bb.5: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f4, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %10:gr64 = COPY $rax - %5:gr64 = COPY %10 - JMP_1 %bb.1 - - bb.6: - ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - CALL64pcrel32 target-flags(x86-plt) @f5, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax - ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp - %9:gr64 = COPY $rax - %6:gr64 = COPY %9 - JMP_1 %bb.1 - - bb.7: - -...