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[x86][scheduler] Add MIR test for 41914
Generated via: $ clang -fno-omit-frame-pointer -m32 -mregparm=3 -O2 crash.c -emit-llvm -S $ llc -print-before=machine-scheduler -mcpu=sandybridge crash.mir Reviewed By: pengfei Differential Revision: https://reviews.llvm.org/D122348
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‎llvm/test/CodeGen/X86/scheduler-asm-moves.mir

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -run-pass=machine-scheduler -mcpu=sandybridge %s -o - | FileCheck %s
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--- |
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; ModuleID = 'crash.ll'
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source_filename = "crash.c"
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target datalayout = "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128"
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target triple = "i386-unknown-linux-gnu"
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%struct.in6_addr = type { %struct.anon }
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%struct.anon = type { i8 }
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%struct.sk_buff = type { i8 }
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%struct.ipv6hdr = type { %struct.in6_addr }
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@csum_ipv6_magic_sum = dso_local local_unnamed_addr global i32 0, align 4
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@csum_ipv6_magic_saddr = dso_local local_unnamed_addr global %struct.in6_addr zeroinitializer, align 1
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@csum_ipv6_magic_daddr = dso_local local_unnamed_addr global i32 0, align 4
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@csum_ipv6_magic_proto = dso_local local_unnamed_addr global i32 0, align 4
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@synproxy_send_tcp_ipv6_nskb = dso_local local_unnamed_addr global %struct.sk_buff* null, align 4
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@synproxy_send_tcp_ipv6_fl6 = dso_local local_unnamed_addr global %struct.in6_addr zeroinitializer, align 1
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; Function Attrs: nounwind uwtable
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define dso_local void @synproxy_send_tcp_ipv6(i32 inreg %skb.coerce, %struct.ipv6hdr* inreg nocapture noundef readonly %niph) local_unnamed_addr #0 {
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entry:
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%0 = load i8, i8* getelementptr inbounds (%struct.in6_addr, %struct.in6_addr* @csum_ipv6_magic_saddr, i32 0, i32 0, i32 0), align 1
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%1 = load i32, i32* @csum_ipv6_magic_daddr, align 4, !tbaa !5
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%2 = load i32, i32* @csum_ipv6_magic_proto, align 4, !tbaa !5
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%3 = tail call i32 asm "", "=&r,r,r,r,r,~{dirflag},~{fpsr},~{flags}"(i8 %0, i32 %1, i32 0, i32 %2) #2, !srcloc !9
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store i32 %3, i32* @csum_ipv6_magic_sum, align 4, !tbaa !5
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%4 = load i8*, i8** bitcast (%struct.sk_buff** @synproxy_send_tcp_ipv6_nskb to i8**), align 4, !tbaa !10
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%bf.load = load i8, i8* %4, align 1
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%bf.set = or i8 %bf.load, 3
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store i8 %bf.set, i8* %4, align 1
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%5 = bitcast %struct.ipv6hdr* %niph to i8*
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%6 = load i8, i8* %5, align 1, !tbaa !12
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store i8 %6, i8* getelementptr inbounds (%struct.in6_addr, %struct.in6_addr* @synproxy_send_tcp_ipv6_fl6, i32 0, i32 0, i32 0), align 1, !tbaa !12
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%skb.coerce1.sroa.0.0.insert.ext = and i32 %skb.coerce, 255
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tail call void @fl6nthsecurity_skb_classify_flow(i32 inreg %skb.coerce1.sroa.0.0.insert.ext) #3
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ret void
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}
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declare dso_local void @fl6nthsecurity_skb_classify_flow(i32 inreg) local_unnamed_addr #1
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attributes #0 = { nounwind uwtable "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
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attributes #1 = { "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.module.flags = !{!0, !1, !2, !3}
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!0 = !{i32 1, !"NumRegisterParameters", i32 3}
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!1 = !{i32 1, !"wchar_size", i32 4}
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!2 = !{i32 7, !"uwtable", i32 2}
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!3 = !{i32 7, !"frame-pointer", i32 2}
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!5 = !{!6, !6, i64 0}
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!6 = !{!"int", !7, i64 0}
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!7 = !{!"omnipotent char", !8, i64 0}
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!8 = !{!"Simple C/C++ TBAA"}
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!9 = !{i64 429}
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!10 = !{!11, !11, i64 0}
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!11 = !{!"any pointer", !7, i64 0}
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!12 = !{!7, !7, i64 0}
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...
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---
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name: synproxy_send_tcp_ipv6
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alignment: 16
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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failsVerification: false
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tracksDebugUserValues: false
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registers:
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- { id: 0, class: gr32_abcd, preferred-register: '' }
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- { id: 1, class: gr32, preferred-register: '' }
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- { id: 2, class: gr32, preferred-register: '' }
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- { id: 3, class: gr8, preferred-register: '' }
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- { id: 4, class: gr32, preferred-register: '' }
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- { id: 5, class: gr32, preferred-register: '' }
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- { id: 6, class: gr32, preferred-register: '' }
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- { id: 7, class: gr32, preferred-register: '' }
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- { id: 8, class: gr8, preferred-register: '' }
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- { id: 9, class: gr8, preferred-register: '' }
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- { id: 10, class: gr32, preferred-register: '' }
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liveins:
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- { reg: '$eax', virtual-reg: '%0' }
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- { reg: '$edx', virtual-reg: '%1' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 1
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adjustsStack: false
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hasCalls: false
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stackProtector: ''
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maxCallFrameSize: 4294967295
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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hasTailCall: true
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localFrameSize: 0
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savePoint: ''
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restorePoint: ''
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fixedStack: []
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stack: []
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callSites: []
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debugValueSubstitutions: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0.entry:
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liveins: $eax, $edx
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; CHECK-LABEL: name: synproxy_send_tcp_ipv6
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; CHECK: liveins: $eax, $edx
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[MOV8rm:%[0-9]+]]:gr8 = MOV8rm $noreg, 1, $noreg, @csum_ipv6_magic_saddr, $noreg :: (dereferenceable load (s8) from `i8* getelementptr inbounds (%struct.in6_addr, %struct.in6_addr* @csum_ipv6_magic_saddr, i32 0, i32 0, i32 0)`)
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; CHECK-NEXT: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm $noreg, 1, $noreg, @csum_ipv6_magic_daddr, $noreg :: (dereferenceable load (s32) from @csum_ipv6_magic_daddr, !tbaa !4)
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; CHECK-NEXT: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm $noreg, 1, $noreg, @csum_ipv6_magic_proto, $noreg :: (dereferenceable load (s32) from @csum_ipv6_magic_proto, !tbaa !4)
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; CHECK-NEXT: [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def dead $eflags
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; CHECK-NEXT: INLINEASM &"", 0 /* attdialect */, 2293771 /* regdef-ec:GR32 */, def early-clobber %2, 65545 /* reguse:GR8 */, [[MOV8rm]], 2293769 /* reguse:GR32 */, [[MOV32rm]], 2293769 /* reguse:GR32 */, [[MOV32r0_]], 2293769 /* reguse:GR32 */, [[MOV32rm1]], 12 /* clobber */, implicit-def dead early-clobber $df, 12 /* clobber */, implicit-def early-clobber $fpsw, 12 /* clobber */, implicit-def dead early-clobber $eflags, !8
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; CHECK-NEXT: MOV32mr $noreg, 1, $noreg, @csum_ipv6_magic_sum, $noreg, %2 :: (store (s32) into @csum_ipv6_magic_sum, !tbaa !4)
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; CHECK-NEXT: [[MOV32rm2:%[0-9]+]]:gr32 = MOV32rm $noreg, 1, $noreg, @synproxy_send_tcp_ipv6_nskb, $noreg :: (dereferenceable load (s32) from `i8** bitcast (%struct.sk_buff** @synproxy_send_tcp_ipv6_nskb to i8**)`, !tbaa !9)
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; CHECK-NEXT: OR8mi [[MOV32rm2]], 1, $noreg, 0, $noreg, 3, implicit-def dead $eflags :: (store (s8) into %ir.4), (load (s8) from %ir.4)
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; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32_abcd = COPY $eax
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; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edx
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; CHECK-NEXT: [[MOV8rm1:%[0-9]+]]:gr8 = MOV8rm [[COPY1]], 1, $noreg, 0, $noreg :: (load (s8) from %ir.5, !tbaa !11)
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; CHECK-NEXT: MOV8mr $noreg, 1, $noreg, @synproxy_send_tcp_ipv6_fl6, $noreg, [[MOV8rm1]] :: (store (s8) into `i8* getelementptr inbounds (%struct.in6_addr, %struct.in6_addr* @synproxy_send_tcp_ipv6_fl6, i32 0, i32 0, i32 0)`, !tbaa !11)
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; CHECK-NEXT: [[MOVZX32rr8_:%[0-9]+]]:gr32 = MOVZX32rr8 [[COPY]].sub_8bit
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; CHECK-NEXT: $eax = COPY [[MOVZX32rr8_]]
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; CHECK-NEXT: TCRETURNdi @fl6nthsecurity_skb_classify_flow, 0, csr_32, implicit $esp, implicit $ssp, implicit $eax
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%1:gr32 = COPY $edx
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%0:gr32_abcd = COPY $eax
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%3:gr8 = MOV8rm $noreg, 1, $noreg, @csum_ipv6_magic_saddr, $noreg :: (dereferenceable load (s8) from `i8* getelementptr inbounds (%struct.in6_addr, %struct.in6_addr* @csum_ipv6_magic_saddr, i32 0, i32 0, i32 0)`)
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%4:gr32 = MOV32rm $noreg, 1, $noreg, @csum_ipv6_magic_daddr, $noreg :: (dereferenceable load (s32) from @csum_ipv6_magic_daddr, !tbaa !5)
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%6:gr32 = MOV32rm $noreg, 1, $noreg, @csum_ipv6_magic_proto, $noreg :: (dereferenceable load (s32) from @csum_ipv6_magic_proto, !tbaa !5)
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%5:gr32 = MOV32r0 implicit-def dead $eflags
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INLINEASM &"", 0 /* attdialect */, 2293771 /* regdef-ec:GR32 */, def early-clobber %2, 65545 /* reguse:GR8 */, %3, 2293769 /* reguse:GR32 */, %4, 2293769 /* reguse:GR32 */, %5, 2293769 /* reguse:GR32 */, %6, 12 /* clobber */, implicit-def dead early-clobber $df, 12 /* clobber */, implicit-def early-clobber $fpsw, 12 /* clobber */, implicit-def dead early-clobber $eflags, !9
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MOV32mr $noreg, 1, $noreg, @csum_ipv6_magic_sum, $noreg, %2 :: (store (s32) into @csum_ipv6_magic_sum, !tbaa !5)
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%7:gr32 = MOV32rm $noreg, 1, $noreg, @synproxy_send_tcp_ipv6_nskb, $noreg :: (dereferenceable load (s32) from `i8** bitcast (%struct.sk_buff** @synproxy_send_tcp_ipv6_nskb to i8**)`, !tbaa !10)
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OR8mi %7, 1, $noreg, 0, $noreg, 3, implicit-def dead $eflags :: (store (s8) into %ir.4), (load (s8) from %ir.4)
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%8:gr8 = MOV8rm %1, 1, $noreg, 0, $noreg :: (load (s8) from %ir.5, !tbaa !12)
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MOV8mr $noreg, 1, $noreg, @synproxy_send_tcp_ipv6_fl6, $noreg, %8 :: (store (s8) into `i8* getelementptr inbounds (%struct.in6_addr, %struct.in6_addr* @synproxy_send_tcp_ipv6_fl6, i32 0, i32 0, i32 0)`, !tbaa !12)
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%10:gr32 = MOVZX32rr8 %0.sub_8bit
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$eax = COPY %10
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TCRETURNdi @fl6nthsecurity_skb_classify_flow, 0, csr_32, implicit $esp, implicit $ssp, implicit $eax
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...

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