1# RUN: llc -o - %s -mtriple=aarch64-windows -start-after=prologepilog -filetype=obj \ 2# RUN: | llvm-readobj --unwind | FileCheck %s 3# RUN: llc -o - %s -mtriple=aarch64-windows -run-pass=aarch64-ldst-opt \ 4# RUN: | FileCheck %s --check-prefix=CHECK-LDSTOPT 5# This test case checks the basic validity of the .xdata section. It's 6# documented at: 7# https://docs.microsoft.com/en-us/cpp/build/arm64-exception-handling 8 9# We expect to see the following in the .xdata section: 10 11# CHECK: ExceptionData { 12# CHECK-NEXT: FunctionLength: 96 13# CHECK-NEXT: Version: 0 14# CHECK-NEXT: ExceptionData: No 15# CHECK-NEXT: EpiloguePacked: No 16# CHECK-NEXT: EpilogueScopes: 1 17# CHECK-NEXT: ByteCodeLength: 28 18# CHECK-NEXT: Prologue [ 19# CHECK-NEXT: 0xc808 ; stp x19, x20, [sp, #64] 20# CHECK-NEXT: 0xd0c7 ; str x22, [sp, #56] 21# CHECK-NEXT: 0xd086 ; str x21, [sp, #48] 22# CHECK-NEXT: 0xc904 ; stp x23, x24, [sp, #32] 23# CHECK-NEXT: 0xc982 ; stp x25, x26, [sp, #16] 24# CHECK-NEXT: 0xce09 ; stp x27, x28, [sp, #-80]! 25# CHECK-NEXT: 0xe4 ; end 26# CHECK-NEXT: ] 27# CHECK-NEXT: EpilogueScopes [ 28# CHECK-NEXT: EpilogueScope { 29# CHECK-NEXT: StartOffset: 16 30# CHECK-NEXT: EpilogueStartIndex: 13 31# CHECK-NEXT: Opcodes [ 32# CHECK-NEXT: 0xc808 ; ldp x19, x20, [sp, #64] 33# CHECK-NEXT: 0xd086 ; ldr x21, [sp, #48] 34# CHECK-NEXT: 0xe3 ; nop 35# CHECK-NEXT: 0xd0c7 ; ldr x22, [sp, #56] 36# CHECK-NEXT: 0xc904 ; ldp x23, x24, [sp, #32] 37# CHECK-NEXT: 0xc982 ; ldp x25, x26, [sp, #16] 38# CHECK-NEXT: 0xce09 ; ldp x27, x28, [sp], #80 39# CHECK-NEXT: 0xe4 ; end 40# CHECK-NEXT: ] 41# CHECK-NEXT: } 42# CHECK-NEXT: ] 43# CHECK-NEXT: } 44 45# Check that the load-store optimizer does not merge the two 46# callee-saved stores in the prologue. 47# CHECK-LDSTOPT: name: test 48# CHECK-LDSTOPT: frame-setup STRXui killed $x21, $sp, 6 49# CHECK-LDSTOPT: frame-setup STRXui killed $x22, $sp, 7 50... 51--- 52name: test 53alignment: 4 54tracksRegLiveness: true 55hasWinCFI: true 56liveins: 57 - { reg: '$w0' } 58frameInfo: 59 stackSize: 80 60 maxAlignment: 8 61 maxCallFrameSize: 0 62 hasOpaqueSPAdjustment: true 63stack: 64 - { id: 0, type: spill-slot, offset: -8, size: 8, alignment: 8, stack-id: default, 65 callee-saved-register: '$x19' } 66 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 8, stack-id: default, 67 callee-saved-register: '$x20' } 68 - { id: 2, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default, 69 callee-saved-register: '$x21' } 70 - { id: 3, type: spill-slot, offset: -32, size: 8, alignment: 8, stack-id: default, 71 callee-saved-register: '$x22' } 72 - { id: 4, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default, 73 callee-saved-register: '$x23' } 74 - { id: 5, type: spill-slot, offset: -48, size: 8, alignment: 8, stack-id: default, 75 callee-saved-register: '$x24' } 76 - { id: 6, type: spill-slot, offset: -56, size: 8, alignment: 8, stack-id: default, 77 callee-saved-register: '$x25' } 78 - { id: 7, type: spill-slot, offset: -64, size: 8, alignment: 8, stack-id: default, 79 callee-saved-register: '$x26' } 80 - { id: 8, type: spill-slot, offset: -72, size: 8, alignment: 8, stack-id: default, 81 callee-saved-register: '$x27' } 82 - { id: 9, type: spill-slot, offset: -80, size: 8, alignment: 8, stack-id: default, 83 callee-saved-register: '$x28' } 84body: | 85 bb.0.entry: 86 liveins: $x0, $x1, $x27, $x28, $x25, $x26, $x23, $x24, $x21, $x22, $x19, $x20 87 early-clobber $sp = frame-setup STPXpre killed $x27, killed $x28, $sp, -10 :: (store 8 into %stack.8), (store 8 into %stack.9) 88 frame-setup SEH_SaveRegP_X 27, 28, -80 89 frame-setup STPXi killed $x25, killed $x26, $sp, 2 :: (store 8 into %stack.6), (store 8 into %stack.7) 90 frame-setup SEH_SaveRegP 25, 26, 16 91 frame-setup STPXi killed $x23, killed $x24, $sp, 4 :: (store 8 into %stack.4), (store 8 into %stack.5) 92 frame-setup SEH_SaveRegP 23, 24, 32 93 frame-setup STRXui killed $x21, $sp, 6 :: (store 8 into %stack.2) 94 frame-setup SEH_SaveReg 21, 48 95 frame-setup STRXui killed $x22, $sp, 7 :: (store 8 into %stack.3) 96 frame-setup SEH_SaveReg 22, 56 97 frame-setup STPXi killed $x19, killed $x20, $sp, 8 :: (store 8 into %stack.0), (store 8 into %stack.1) 98 frame-setup SEH_SaveRegP 19, 20, 64 99 frame-setup SEH_PrologEnd 100 $x19 = ADDXrr $x0, killed $x1 101 $x20 = ADDXrr $x19, killed $x0 102 $x21 = ADDXrr $x20, killed $x19 103 $x22 = ADDXrr $x21, killed $x20 104 $x23 = ADDXrr $x22, killed $x21 105 $x24 = ADDXrr $x23, killed $x22 106 $x25 = ADDXrr $x24, killed $x23 107 $x26 = ADDXrr $x25, killed $x24 108 $x27 = ADDXrr $x26, killed $x25 109 $x28 = ADDXrr $x27, killed $x26 110 frame-destroy SEH_EpilogStart 111 $x19, $x20 = frame-destroy LDPXi $sp, 8 :: (load 8 from %stack.0), (load 8 from %stack.1) 112 frame-destroy SEH_SaveRegP 19, 20, 64 113 $x21 = frame-destroy LDRXui $sp, 6 :: (load 8 from %stack.2) 114 frame-destroy SEH_SaveReg 21, 48 115 $x0 = COPY $x28 116 frame-destroy SEH_Nop 117 $x21 = frame-destroy LDRXui $sp, 6 :: (load 8 from %stack.2) 118 frame-destroy SEH_SaveReg 22, 56 119 $x23, $x24 = frame-destroy LDPXi $sp, 4 :: (load 8 from %stack.4), (load 8 from %stack.5) 120 frame-destroy SEH_SaveRegP 23, 24, 32 121 $x25, $x26 = frame-destroy LDPXi $sp, 2 :: (load 8 from %stack.6), (load 8 from %stack.7) 122 frame-destroy SEH_SaveRegP 25, 26, 16 123 early-clobber $sp, $x27, $x28 = frame-destroy LDPXpost $sp, 10 :: (load 8 from %stack.8), (load 8 from %stack.9) 124 frame-destroy SEH_SaveRegP_X 27, 28, -80 125 frame-destroy SEH_EpilogEnd 126 RET_ReallyLR implicit $x0 127 128... 129