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1# RUN: llc -o - %s -start-after=if-converter | FileCheck %s2 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 110 11 ; Function Attrs: nounwind12 define void @mm_update_next_owner(ptr %p1, ptr %p2) #0 {13 entry:14 %0 = load ptr, ptr %p1, align 815 br i1 undef, label %do.body.92, label %for.body.2116 17 for.body.21: ; preds = %entry18 unreachable19 20 do.body.92: ; preds = %entry21 %usage = getelementptr inbounds i8, ptr %0, i64 -4822 %call95 = tail call signext i32 @__raw_read_unlock(ptr nonnull @tasklist_lock) #123 store volatile i32 0, ptr %p2, align 424 tail call void asm sideeffect "#compiler barrier", "~{memory}"() #125 %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,$1\0A\09bne-\091b\0Async \0A", "=&r,r,~{cc},~{xer},~{memory}"(ptr %usage) #126 %cmp.i = icmp eq i32 %1, 027 br i1 %cmp.i, label %if.then.i, label %put_task_struct.exit28 29 if.then.i: ; preds = %do.body.9230 unreachable31 32 put_task_struct.exit: ; preds = %do.body.9233 ret void34 }35 36 declare signext i32 @__raw_read_unlock(...)37 38 attributes #0 = { nounwind "target-cpu"="pwr7" }39 attributes #1 = { nounwind }40 41...42---43name: mm_update_next_owner44alignment: 1645exposesReturnsTwice: false46tracksRegLiveness: true47liveins: 48 - { reg: '$x3' }49 - { reg: '$x4' }50frameInfo: 51 isFrameAddressTaken: false52 isReturnAddressTaken: false53 hasStackMap: false54 hasPatchPoint: false55 stackSize: 14456 offsetAdjustment: 057 maxAlignment: 058 adjustsStack: true59 hasCalls: true60 maxCallFrameSize: 11261 hasOpaqueSPAdjustment: false62 hasVAStart: false63 hasMustTailInVarArgFunc: false64fixedStack: 65 - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$x30' }66 - { id: 1, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$x29' }67body: |68 bb.0.entry:69 liveins: $x3, $x4, $x29, $x30, $x29, $x3070 71 $x0 = MFLR8 implicit $lr872 STD $x0, 16, $x173 $x1 = STDU $x1, -144, $x174 STD killed $x29, 120, $x1 :: (store (s64) into %fixed-stack.1)75 STD killed $x30, 128, $x1 :: (store (s64) into %fixed-stack.0, align 16)76 $x30 = OR8 $x4, $x477 $x3 = LD 0, killed $x3 :: (load (s64) from %ir.p1)78 $x29 = ADDI8 killed $x3, -4879 $x3 = ADDIStocHA8 $x2, @tasklist_lock80 $x3 = LDtocL @tasklist_lock, killed $x3, implicit $x2 :: (load (s64) from got)81 BL8_NOP @__raw_read_unlock, csr_ppc64_altivec, implicit-def $lr8, implicit $rm, implicit $x3, implicit $x2, implicit-def $r1, implicit-def dead $x382 $r3 = LI 083 STW killed $r3, 0, killed $x30 :: (volatile store (s32) into %ir.p2)84 INLINEASM &"#compiler barrier", 2585 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 $cr086 ; CHECK-LABEL: @mm_update_next_owner87 ; CHECK-NOT: lwarx 29, 0, 2988 ; CHECK-NOT: stwcx. 29, 0, 2989 $cr0 = CMPLWI killed $r3, 090 $x30 = LD 128, $x1 :: (load (s64) from %fixed-stack.0, align 16)91 $x29 = LD 120, $x1 :: (load (s64) from %fixed-stack.1)92 $x1 = ADDI8 $x1, 14493 $x0 = LD 16, $x194 MTLR8 $x0, implicit-def $lr895 BLR8 implicit $lr8, implicit $rm96 97...98