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1; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py2; RUN: llc -mtriple=x86_64-linux -stop-after=early-tailduplication \3; RUN: -verify-machineinstrs < %s | FileCheck %s4 5; Ensure that we don't duplicate a block with an "INLINEASM_BR" instruction6; during code gen.7declare dso_local void @foo()8 9define ptr @test1(ptr %arg1, ptr %arg2) {10 ; CHECK-LABEL: name: test111 ; CHECK: bb.0.bb:12 ; CHECK-NEXT: successors: %bb.1(0x50000000), %bb.2(0x30000000)13 ; CHECK-NEXT: liveins: $rdi, $rsi14 ; CHECK-NEXT: {{ $}}15 ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY $rsi16 ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64 = COPY $rdi17 ; CHECK-NEXT: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm [[COPY1]], 1, $noreg, 0, $noreg :: (load (s64) from %ir.arg1)18 ; CHECK-NEXT: [[SUB64rr:%[0-9]+]]:gr64 = SUB64rr [[MOV64rm]], [[COPY]], implicit-def $eflags19 ; CHECK-NEXT: JCC_1 %bb.2, 4, implicit $eflags20 ; CHECK-NEXT: JMP_1 %bb.121 ; CHECK-NEXT: {{ $}}22 ; CHECK-NEXT: bb.1.bb100:23 ; CHECK-NEXT: successors: %bb.3(0x80000000)24 ; CHECK-NEXT: {{ $}}25 ; CHECK-NEXT: MOV64mi32 [[COPY1]], 1, $noreg, 0, $noreg, 0 :: (store (s64) into %ir.arg1)26 ; CHECK-NEXT: JMP_1 %bb.327 ; CHECK-NEXT: {{ $}}28 ; CHECK-NEXT: bb.2.bb106:29 ; CHECK-NEXT: successors: %bb.3(0x80000000)30 ; CHECK-NEXT: {{ $}}31 ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp32 ; CHECK-NEXT: CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp33 ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp34 ; CHECK-NEXT: {{ $}}35 ; CHECK-NEXT: bb.3.bb110:36 ; CHECK-NEXT: successors: %bb.5(0x80000000), %bb.4(0x00000000)37 ; CHECK-NEXT: {{ $}}38 ; CHECK-NEXT: [[PHI:%[0-9]+]]:gr64 = PHI [[COPY]], %bb.2, [[MOV64rm]], %bb.139 ; CHECK-NEXT: INLINEASM_BR &"#$0 $1 $2", 9 /* sideeffect mayload attdialect */, 13 /* imm */, 42, 13 /* imm */, 0, 13 /* imm */, %bb.4, 12 /* clobber */, implicit-def early-clobber $df, 12 /* clobber */, implicit-def early-clobber $fpsw, 12 /* clobber */, implicit-def early-clobber $eflags40 ; CHECK-NEXT: JMP_1 %bb.541 ; CHECK-NEXT: {{ $}}42 ; CHECK-NEXT: bb.4.bb17.i.i.i (inlineasm-br-indirect-target):43 ; CHECK-NEXT: successors: %bb.5(0x80000000)44 ; CHECK-NEXT: {{ $}}45 ; CHECK-NEXT: bb.5.kmem_cache_has_cpu_partial.exit:46 ; CHECK-NEXT: $rax = COPY [[PHI]]47 ; CHECK-NEXT: RET 0, $rax48bb:49 %i28.i = load ptr, ptr %arg1, align 850 %if = icmp ne ptr %i28.i, %arg251 br i1 %if, label %bb100, label %bb10652 53bb100: ; preds = %bb54 store ptr null, ptr %arg1, align 855 br label %bb11056 57bb106: ; preds = %bb58 call void @foo()59 br label %bb11060 61bb110: ; preds = %bb106, %bb10062 %i10.1 = phi ptr [ %arg2, %bb106 ], [ %i28.i, %bb100 ]63 callbr void asm sideeffect "#$0 $1 $2", "i,i,!i,~{dirflag},~{fpsr},~{flags}"(i32 42, i1 false)64 to label %kmem_cache_has_cpu_partial.exit [label %bb17.i.i.i]65 66bb17.i.i.i: ; preds = %bb11067 br label %kmem_cache_has_cpu_partial.exit68 69kmem_cache_has_cpu_partial.exit: ; preds = %bb11070 ret ptr %i10.171}72 73; The intent of this test is to test what happens when we have a callbr where74; BOTH the fallthrough/direct target and the indirect target are the same basic75; block. We might one day permit tail duplication here, but we need to ensure76; that we don't crash or run afoul of any MachineVerifier checks.77define void @ceph_con_v2_try_read(i32 %__trans_tmp_3.sroa.0.0.copyload, i1 %tobool.not.i.i) nounwind {78 ; CHECK-LABEL: name: ceph_con_v2_try_read79 ; CHECK: bb.0.entry:80 ; CHECK-NEXT: successors: %bb.1(0x80000000)81 ; CHECK-NEXT: liveins: $edi, $esi82 ; CHECK-NEXT: {{ $}}83 ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY $esi84 ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edi85 ; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr8 = COPY [[COPY]].sub_8bit86 ; CHECK-NEXT: {{ $}}87 ; CHECK-NEXT: bb.1.for.cond:88 ; CHECK-NEXT: successors: %bb.2(0x30000000), %bb.1(0x50000000)89 ; CHECK-NEXT: {{ $}}90 ; CHECK-NEXT: TEST32rr [[COPY1]], [[COPY1]], implicit-def $eflags91 ; CHECK-NEXT: JCC_1 %bb.1, 5, implicit $eflags92 ; CHECK-NEXT: JMP_1 %bb.293 ; CHECK-NEXT: {{ $}}94 ; CHECK-NEXT: bb.2.sw.bb:95 ; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.4(0x40000000)96 ; CHECK-NEXT: {{ $}}97 ; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp98 ; CHECK-NEXT: [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def dead $eflags99 ; CHECK-NEXT: [[SUBREG_TO_REG:%[0-9]+]]:gr64 = SUBREG_TO_REG 0, killed [[MOV32r0_]], %subreg.sub_32bit100 ; CHECK-NEXT: [[LEA64r:%[0-9]+]]:gr64 = LEA64r %stack.0.skip.i.i, 1, $noreg, 0, $noreg101 ; CHECK-NEXT: $rdi = COPY [[LEA64r]]102 ; CHECK-NEXT: CALL64r killed [[SUBREG_TO_REG]], csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax103 ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp104 ; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr32 = COPY $eax105 ; CHECK-NEXT: TEST8ri [[COPY2]], 1, implicit-def $eflags106 ; CHECK-NEXT: JCC_1 %bb.4, 4, implicit $eflags107 ; CHECK-NEXT: JMP_1 %bb.3108 ; CHECK-NEXT: {{ $}}109 ; CHECK-NEXT: bb.3.if.else.i.i:110 ; CHECK-NEXT: successors: %bb.5(0x80000000)111 ; CHECK-NEXT: {{ $}}112 ; CHECK-NEXT: INLINEASM_BR &"", 1 /* sideeffect attdialect */, 13 /* imm */, %bb.5113 ; CHECK-NEXT: JMP_1 %bb.5114 ; CHECK-NEXT: {{ $}}115 ; CHECK-NEXT: bb.4.process_message_header.exit.i:116 ; CHECK-NEXT: successors: %bb.1(0x80000000)117 ; CHECK-NEXT: {{ $}}118 ; CHECK-NEXT: LIFETIME_END %stack.0.skip.i.i119 ; CHECK-NEXT: JMP_1 %bb.1120 ; CHECK-NEXT: {{ $}}121 ; CHECK-NEXT: bb.5.if.end.i (inlineasm-br-indirect-target):122 ; CHECK-NEXT: successors: %bb.1(0x80000000)123 ; CHECK-NEXT: {{ $}}124 ; CHECK-NEXT: LIFETIME_END %stack.0.skip.i.i125 ; CHECK-NEXT: JMP_1 %bb.1126entry:127 %skip.i.i = alloca i32, i32 0, align 4128 %cond = icmp eq i32 %__trans_tmp_3.sroa.0.0.copyload, 0129 br label %for.cond130 131for.cond:132 br i1 %cond, label %sw.bb, label %for.cond133 134sw.bb:135 %call.i.i2 = call i32 null(ptr %skip.i.i)136 br i1 %tobool.not.i.i, label %if.else.i.i, label %process_message_header.exit.i137 138if.else.i.i:139 callbr void asm sideeffect "", "!i"()140 to label %if.end.i [label %if.end.i]141 142process_message_header.exit.i:143 call void @llvm.lifetime.end.p0(i64 0, ptr %skip.i.i)144 br label %for.cond145 146if.end.i:147 call void @llvm.lifetime.end.p0(i64 0, ptr %skip.i.i)148 br label %for.cond149}150 151declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)152