1; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py 2; RUN: llc -mtriple=x86_64-linux -stop-after=early-tailduplication \ 3; RUN: -verify-machineinstrs < %s | FileCheck %s 4 5; Ensure that we don't duplicate a block with an "INLINEASM_BR" instruction 6; during code gen. 7declare dso_local void @foo() 8 9define ptr @test1(ptr %arg1, ptr %arg2) { 10 ; CHECK-LABEL: name: test1 11 ; CHECK: bb.0.bb: 12 ; CHECK-NEXT: successors: %bb.1(0x50000000), %bb.2(0x30000000) 13 ; CHECK-NEXT: liveins: $rdi, $rsi 14 ; CHECK-NEXT: {{ $}} 15 ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY $rsi 16 ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64 = COPY $rdi 17 ; 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 $eflags 19 ; CHECK-NEXT: JCC_1 %bb.2, 4, implicit $eflags 20 ; CHECK-NEXT: JMP_1 %bb.1 21 ; 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.3 27 ; 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 $ssp 32 ; CHECK-NEXT: CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp 33 ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp 34 ; 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.1 39 ; 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 $eflags 40 ; CHECK-NEXT: JMP_1 %bb.5 41 ; CHECK-NEXT: {{ $}} 42 ; CHECK-NEXT: bb.4.bb17.i.i.i (machine-block-address-taken, 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, $rax 48bb: 49 %i28.i = load ptr, ptr %arg1, align 8 50 %if = icmp ne ptr %i28.i, %arg2 51 br i1 %if, label %bb100, label %bb106 52 53bb100: ; preds = %bb 54 store ptr null, ptr %arg1, align 8 55 br label %bb110 56 57bb106: ; preds = %bb 58 call void @foo() 59 br label %bb110 60 61bb110: ; preds = %bb106, %bb100 62 %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 = %bb110 67 br label %kmem_cache_has_cpu_partial.exit 68 69kmem_cache_has_cpu_partial.exit: ; preds = %bb110 70 ret ptr %i10.1 71} 72 73; The intent of this test is to test what happens when we have a callbr where 74; BOTH the fallthrough/direct target and the indirect target are the same basic 75; block. We might one day permit tail duplication here, but we need to ensure 76; 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_read 79 ; CHECK: bb.0.entry: 80 ; CHECK-NEXT: successors: %bb.1(0x80000000) 81 ; CHECK-NEXT: liveins: $edi, $esi 82 ; CHECK-NEXT: {{ $}} 83 ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY $esi 84 ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edi 85 ; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr8 = COPY [[COPY]].sub_8bit 86 ; 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 $eflags 91 ; CHECK-NEXT: JCC_1 %bb.1, 5, implicit $eflags 92 ; CHECK-NEXT: JMP_1 %bb.2 93 ; 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 $ssp 98 ; CHECK-NEXT: [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def dead $eflags 99 ; CHECK-NEXT: [[SUBREG_TO_REG:%[0-9]+]]:gr64 = SUBREG_TO_REG 0, killed [[MOV32r0_]], %subreg.sub_32bit 100 ; CHECK-NEXT: [[LEA64r:%[0-9]+]]:gr64 = LEA64r %stack.0.skip.i.i, 1, $noreg, 0, $noreg 101 ; 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 $eax 103 ; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp 104 ; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr32 = COPY $eax 105 ; CHECK-NEXT: TEST8ri [[COPY2]], 1, implicit-def $eflags 106 ; CHECK-NEXT: JCC_1 %bb.4, 4, implicit $eflags 107 ; CHECK-NEXT: JMP_1 %bb.3 108 ; 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.5 113 ; CHECK-NEXT: JMP_1 %bb.5 114 ; 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.i 119 ; CHECK-NEXT: JMP_1 %bb.1 120 ; CHECK-NEXT: {{ $}} 121 ; CHECK-NEXT: bb.5.if.end.i (machine-block-address-taken, inlineasm-br-indirect-target): 122 ; CHECK-NEXT: successors: %bb.1(0x80000000) 123 ; CHECK-NEXT: {{ $}} 124 ; CHECK-NEXT: LIFETIME_END %stack.0.skip.i.i 125 ; CHECK-NEXT: JMP_1 %bb.1 126entry: 127 %skip.i.i = alloca i32, i32 0, align 4 128 %cond = icmp eq i32 %__trans_tmp_3.sroa.0.0.copyload, 0 129 br label %for.cond 130 131for.cond: 132 br i1 %cond, label %sw.bb, label %for.cond 133 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.i 137 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.cond 145 146if.end.i: 147 call void @llvm.lifetime.end.p0(i64 0, ptr %skip.i.i) 148 br label %for.cond 149} 150 151declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) 152