# RUN: llc -o - %s -mtriple=aarch64-windows -start-after=prologepilog -filetype=obj \ # RUN: | llvm-readobj --unwind - | FileCheck %s # RUN: llc -o - %s -mtriple=aarch64-windows -run-pass=aarch64-ldst-opt \ # RUN: | FileCheck %s --check-prefix=CHECK-LDSTOPT # This test case checks the basic validity of the .xdata section. It's # documented at: # https://docs.microsoft.com/en-us/cpp/build/arm64-exception-handling # Also test the generated assembler SEH directives. # RUN: llc -o - %s -mtriple=aarch64-windows -start-after=prologepilog -filetype=asm \ # RUN: | FileCheck %s --check-prefix=ASM # We expect to see the following in the .xdata section: # CHECK: ExceptionData { # CHECK-NEXT: FunctionLength: 96 # CHECK-NEXT: Version: 0 # CHECK-NEXT: ExceptionData: No # CHECK-NEXT: EpiloguePacked: No # CHECK-NEXT: EpilogueScopes: 1 # CHECK-NEXT: ByteCodeLength: 28 # CHECK-NEXT: Prologue [ # CHECK-NEXT: 0xc808 ; stp x19, x20, [sp, #64] # CHECK-NEXT: 0xd0c7 ; str x22, [sp, #56] # CHECK-NEXT: 0xd086 ; str x21, [sp, #48] # CHECK-NEXT: 0xc904 ; stp x23, x24, [sp, #32] # CHECK-NEXT: 0xc982 ; stp x25, x26, [sp, #16] # CHECK-NEXT: 0xce09 ; stp x27, x28, [sp, #-80]! # CHECK-NEXT: 0xe4 ; end # CHECK-NEXT: ] # CHECK-NEXT: EpilogueScopes [ # CHECK-NEXT: EpilogueScope { # CHECK-NEXT: StartOffset: 16 # CHECK-NEXT: EpilogueStartIndex: 13 # CHECK-NEXT: Opcodes [ # CHECK-NEXT: 0xc808 ; ldp x19, x20, [sp, #64] # CHECK-NEXT: 0xd086 ; ldr x21, [sp, #48] # CHECK-NEXT: 0xe3 ; nop # CHECK-NEXT: 0xd0c7 ; ldr x22, [sp, #56] # CHECK-NEXT: 0xc904 ; ldp x23, x24, [sp, #32] # CHECK-NEXT: 0xc982 ; ldp x25, x26, [sp, #16] # CHECK-NEXT: 0xce09 ; ldp x27, x28, [sp], #80 # CHECK-NEXT: 0xe4 ; end # CHECK-NEXT: ] # CHECK-NEXT: } # CHECK-NEXT: ] # CHECK-NEXT: } # Check that the load-store optimizer does not merge the two # callee-saved stores in the prologue. # CHECK-LDSTOPT: name: test # CHECK-LDSTOPT: frame-setup STRXui killed $x21, $sp, 6 # CHECK-LDSTOPT: frame-setup STRXui killed $x22, $sp, 7 # ASM-LABEL: test: # ASM: .seh_proc test # ASM: .seh_save_regp_x x27, 80 # ASM: .seh_save_regp x25, 16 # ASM: .seh_save_regp x23, 32 # ASM: .seh_save_reg x21, 48 # ASM: .seh_save_reg x22, 56 # ASM: .seh_save_regp x19, 64 # ASM: .seh_endprologue # ASM: .seh_startepilogue # ASM: .seh_save_regp x19, 64 # ASM: .seh_save_reg x21, 48 # ASM: .seh_nop # ASM: .seh_save_reg x22, 56 # ASM: .seh_save_regp x23, 32 # ASM: .seh_save_regp x25, 16 # ASM: .seh_save_regp_x x27, 80 # ASM: .seh_endepilogue # ASM: .seh_endfunclet # ASM: .seh_endproc ... --- name: test alignment: 4 tracksRegLiveness: true hasWinCFI: true liveins: - { reg: '$w0' } frameInfo: stackSize: 80 maxAlignment: 8 maxCallFrameSize: 0 hasOpaqueSPAdjustment: true stack: - { id: 0, type: spill-slot, offset: -8, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x19' } - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x20' } - { id: 2, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x21' } - { id: 3, type: spill-slot, offset: -32, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x22' } - { id: 4, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x23' } - { id: 5, type: spill-slot, offset: -48, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x24' } - { id: 6, type: spill-slot, offset: -56, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x25' } - { id: 7, type: spill-slot, offset: -64, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x26' } - { id: 8, type: spill-slot, offset: -72, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x27' } - { id: 9, type: spill-slot, offset: -80, size: 8, alignment: 8, stack-id: default, callee-saved-register: '$x28' } body: | bb.0.entry: liveins: $x0, $x1, $x27, $x28, $x25, $x26, $x23, $x24, $x21, $x22, $x19, $x20 early-clobber $sp = frame-setup STPXpre killed $x27, killed $x28, $sp, -10 :: (store 8 into %stack.8), (store 8 into %stack.9) frame-setup SEH_SaveRegP_X 27, 28, -80 frame-setup STPXi killed $x25, killed $x26, $sp, 2 :: (store 8 into %stack.6), (store 8 into %stack.7) frame-setup SEH_SaveRegP 25, 26, 16 frame-setup STPXi killed $x23, killed $x24, $sp, 4 :: (store 8 into %stack.4), (store 8 into %stack.5) frame-setup SEH_SaveRegP 23, 24, 32 frame-setup STRXui killed $x21, $sp, 6 :: (store 8 into %stack.2) frame-setup SEH_SaveReg 21, 48 frame-setup STRXui killed $x22, $sp, 7 :: (store 8 into %stack.3) frame-setup SEH_SaveReg 22, 56 frame-setup STPXi killed $x19, killed $x20, $sp, 8 :: (store 8 into %stack.0), (store 8 into %stack.1) frame-setup SEH_SaveRegP 19, 20, 64 frame-setup SEH_PrologEnd $x19 = ADDXrr $x0, killed $x1 $x20 = ADDXrr $x19, killed $x0 $x21 = ADDXrr $x20, killed $x19 $x22 = ADDXrr $x21, killed $x20 $x23 = ADDXrr $x22, killed $x21 $x24 = ADDXrr $x23, killed $x22 $x25 = ADDXrr $x24, killed $x23 $x26 = ADDXrr $x25, killed $x24 $x27 = ADDXrr $x26, killed $x25 $x28 = ADDXrr $x27, killed $x26 frame-destroy SEH_EpilogStart $x19, $x20 = frame-destroy LDPXi $sp, 8 :: (load 8 from %stack.0), (load 8 from %stack.1) frame-destroy SEH_SaveRegP 19, 20, 64 $x21 = frame-destroy LDRXui $sp, 6 :: (load 8 from %stack.2) frame-destroy SEH_SaveReg 21, 48 $x0 = COPY $x28 frame-destroy SEH_Nop $x21 = frame-destroy LDRXui $sp, 6 :: (load 8 from %stack.2) frame-destroy SEH_SaveReg 22, 56 $x23, $x24 = frame-destroy LDPXi $sp, 4 :: (load 8 from %stack.4), (load 8 from %stack.5) frame-destroy SEH_SaveRegP 23, 24, 32 $x25, $x26 = frame-destroy LDPXi $sp, 2 :: (load 8 from %stack.6), (load 8 from %stack.7) frame-destroy SEH_SaveRegP 25, 26, 16 early-clobber $sp, $x27, $x28 = frame-destroy LDPXpost $sp, 10 :: (load 8 from %stack.8), (load 8 from %stack.9) frame-destroy SEH_SaveRegP_X 27, 28, -80 frame-destroy SEH_EpilogEnd RET_ReallyLR implicit $x0 ...