1# RUN: llc -o - %s -start-after=if-converter | FileCheck %s 2 3--- | 4 target datalayout = "E-m:e-i64:64-n32:64" 5 target triple = "powerpc64-unknown-linux-gnu" 6 7 %struct.rwlock_t.0.22.58.68.242.244 = type {} 8 9 @tasklist_lock = external global %struct.rwlock_t.0.22.58.68.242.244, align 1 10 11 ; Function Attrs: nounwind 12 define void @mm_update_next_owner(i8** %p1, i32* %p2) #0 { 13 entry: 14 %0 = load i8*, i8** %p1, align 8 15 br i1 undef, label %do.body.92, label %for.body.21 16 17 for.body.21: ; preds = %entry 18 unreachable 19 20 do.body.92: ; preds = %entry 21 %usage = getelementptr inbounds i8, i8* %0, i64 -48 22 %counter.i = bitcast i8* %usage to i32* 23 %call95 = tail call signext i32 bitcast (i32 (...)* @__raw_read_unlock to i32 (%struct.rwlock_t.0.22.58.68.242.244*)*)(%struct.rwlock_t.0.22.58.68.242.244* nonnull @tasklist_lock) #1 24 store volatile i32 0, i32* %p2, align 4 25 tail call void asm sideeffect "#compiler barrier", "~{memory}"() #1 26 %1 = tail call i32 asm sideeffect "\0Alwsync \0A1:\09lwarx\09$0,0,$1\09\09# atomic_dec_return\0A\09addic\09$0,$0,-1\0A\09stwcx.\09$0,0,$1\0A\09bne-\091b\0Async \0A", "=&r,r,~{cc},~{xer},~{memory}"(i32* %counter.i) #1 27 %cmp.i = icmp eq i32 %1, 0 28 br i1 %cmp.i, label %if.then.i, label %put_task_struct.exit 29 30 if.then.i: ; preds = %do.body.92 31 unreachable 32 33 put_task_struct.exit: ; preds = %do.body.92 34 ret void 35 } 36 37 declare signext i32 @__raw_read_unlock(...) 38 39 attributes #0 = { nounwind "target-cpu"="pwr7" } 40 attributes #1 = { nounwind } 41 42... 43--- 44name: mm_update_next_owner 45alignment: 4 46exposesReturnsTwice: false 47hasInlineAsm: true 48allVRegsAllocated: true 49isSSA: false 50tracksRegLiveness: true 51tracksSubRegLiveness: false 52liveins: 53 - { reg: '%x3' } 54 - { reg: '%x4' } 55calleeSavedRegisters: [ '%cr2', '%cr3', '%cr4', '%f14', '%f15', '%f16', 56 '%f17', '%f18', '%f19', '%f20', '%f21', '%f22', 57 '%f23', '%f24', '%f25', '%f26', '%f27', '%f28', 58 '%f29', '%f30', '%f31', '%r14', '%r15', '%r16', 59 '%r17', '%r18', '%r19', '%r20', '%r21', '%r22', 60 '%r23', '%r24', '%r25', '%r26', '%r27', '%r28', 61 '%r29', '%r30', '%r31', '%v20', '%v21', '%v22', 62 '%v23', '%v24', '%v25', '%v26', '%v27', '%v28', 63 '%v29', '%v30', '%v31', '%vf20', '%vf21', '%vf22', 64 '%vf23', '%vf24', '%vf25', '%vf26', '%vf27', '%vf28', 65 '%vf29', '%vf30', '%vf31', '%x14', '%x15', '%x16', 66 '%x17', '%x18', '%x19', '%x20', '%x21', '%x22', 67 '%x23', '%x24', '%x25', '%x26', '%x27', '%x28', 68 '%x29', '%x30', '%x31', '%cr2eq', '%cr3eq', '%cr4eq', 69 '%cr2gt', '%cr3gt', '%cr4gt', '%cr2lt', '%cr3lt', 70 '%cr4lt', '%cr2un', '%cr3un', '%cr4un' ] 71frameInfo: 72 isFrameAddressTaken: false 73 isReturnAddressTaken: false 74 hasStackMap: false 75 hasPatchPoint: false 76 stackSize: 144 77 offsetAdjustment: 0 78 maxAlignment: 0 79 adjustsStack: true 80 hasCalls: true 81 maxCallFrameSize: 112 82 hasOpaqueSPAdjustment: false 83 hasVAStart: false 84 hasMustTailInVarArgFunc: false 85fixedStack: 86 - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '%x30' } 87 - { id: 1, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '%x29' } 88body: | 89 bb.0.entry: 90 liveins: %x3, %x4, %x29, %x30, %x29, %x30 91 92 %x0 = MFLR8 implicit %lr8 93 STD %x0, 16, %x1 94 %x1 = STDU %x1, -144, %x1 95 STD killed %x29, 120, %x1 :: (store 8 into %fixed-stack.1) 96 STD killed %x30, 128, %x1 :: (store 8 into %fixed-stack.0, align 16) 97 %x30 = OR8 %x4, %x4 98 %x3 = LD 0, killed %x3 :: (load 8 from %ir.p1) 99 %x29 = ADDI8 killed %x3, -48 100 %x3 = ADDIStocHA %x2, @tasklist_lock 101 %x3 = LDtocL @tasklist_lock, killed %x3, implicit %x2 :: (load 8 from got) 102 BL8_NOP @__raw_read_unlock, csr_svr464_altivec, implicit-def %lr8, implicit %rm, implicit %x3, implicit %x2, implicit-def %r1, implicit-def dead %x3 103 %r3 = LI 0 104 STW killed %r3, 0, killed %x30 :: (volatile store 4 into %ir.p2) 105 INLINEASM $"#compiler barrier", 25 106 INLINEASM $"\0Alwsync \0A1:\09lwarx\09$0,0,$1\09\09# atomic_dec_return\0A\09addic\09$0,$0,-1\0A\09stwcx.\09$0,0,$1\0A\09bne-\091b\0Async \0A", 25, 131083, def early-clobber %r3, 851977, killed %x29, 12, implicit-def dead early-clobber %cr0 107 ; CHECK-LABEL: @mm_update_next_owner 108 ; CHECK-NOT: lwarx 29, 0, 29 109 ; CHECK-NOT: stwcx. 29, 0, 29 110 %cr0 = CMPLWI killed %r3, 0 111 %x30 = LD 128, %x1 :: (load 8 from %fixed-stack.0, align 16) 112 %x29 = LD 120, %x1 :: (load 8 from %fixed-stack.1) 113 %x1 = ADDI8 %x1, 144 114 %x0 = LD 16, %x1 115 MTLR8 %x0, implicit-def %lr8 116 BLR8 implicit %lr8, implicit %rm 117 118... 119