derek.holloway
7502bf64a4
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85 lines
3.5 KiB
LLVM
85 lines
3.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc -mtriple arm64e-apple-darwin -o - %s | FileCheck %s
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;
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; arm64e uses B-key signing via "ptrauth-returns". Test that tail calls
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; with FPDiff != 0 use explicit autib x30, x16 (entry SP) instead of
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; autibsp (wrong SP), and that FPDiff == 0 still uses autibsp.
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declare swifttailcc void @callee_async(ptr swiftasync %ctx, i64, i64, i64, i64, i64, i64, i64, i64, i64)
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declare swifttailcc void @callee_no_stack_args(ptr swiftasync %ctx)
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; FPDiff != 0: Must use explicit autib with computed entry SP.
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define swifttailcc void @test_async_tail_call(ptr swiftasync %ctx) "ptrauth-returns" "ptrauth-auth-traps" "sign-return-address"="all" "frame-pointer"="all" {
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; CHECK-LABEL: test_async_tail_call:
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; CHECK: ; %bb.0:
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; CHECK-NEXT: pacibsp
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; CHECK-NEXT: .cfi_negate_ra_state
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; CHECK-NEXT: orr x29, x29, #0x1000000000000000
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; CHECK-NEXT: sub sp, sp, #48
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; CHECK-NEXT: stp x29, x30, [sp, #16] ; 16-byte Folded Spill
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; CHECK-NEXT: add x16, sp, #8
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; CHECK-NEXT: movk x16, #49946, lsl #48
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; CHECK-NEXT: mov x17, x22
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; CHECK-NEXT: pacdb x17, x16
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; CHECK-NEXT: str x17, [sp, #8]
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; CHECK-NEXT: add x29, sp, #16
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; CHECK-NEXT: .cfi_def_cfa w29, 32
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; CHECK-NEXT: .cfi_offset w30, -24
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; CHECK-NEXT: .cfi_offset w29, -32
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; CHECK-NEXT: mov w8, #9 ; =0x9
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; CHECK-NEXT: str x8, [x29, #16]
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; CHECK-NEXT: mov w0, #1 ; =0x1
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; CHECK-NEXT: mov w1, #2 ; =0x2
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; CHECK-NEXT: mov w2, #3 ; =0x3
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; CHECK-NEXT: mov w3, #4 ; =0x4
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; CHECK-NEXT: mov w4, #5 ; =0x5
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; CHECK-NEXT: mov w5, #6 ; =0x6
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; CHECK-NEXT: mov w6, #7 ; =0x7
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; CHECK-NEXT: mov w7, #8 ; =0x8
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; CHECK-NEXT: ldp x29, x30, [sp, #16] ; 16-byte Folded Reload
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; CHECK-NEXT: and x29, x29, #0xefffffffffffffff
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; CHECK-NEXT: add sp, sp, #32
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; CHECK-NEXT: mov x17, x30
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; CHECK-NEXT: add x16, sp, #16
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; CHECK-NEXT: autib1716
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; CHECK-NEXT: mov x30, x17
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; CHECK-NEXT: eor x16, x30, x30, lsl #1
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; CHECK-NEXT: tbz x16, #62, Lauth_success_0
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; CHECK-NEXT: brk #0xc471
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; CHECK-NEXT: Lauth_success_0:
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; CHECK-NEXT: b _callee_async
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musttail call swifttailcc void @callee_async(ptr swiftasync %ctx, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8, i64 9)
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ret void
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}
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; FPDiff == 0: autibsp is correct here.
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define swifttailcc void @test_no_fpdiff_tail_call(ptr swiftasync %ctx) "ptrauth-returns" "ptrauth-auth-traps" "sign-return-address"="all" "frame-pointer"="all" {
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; CHECK-LABEL: test_no_fpdiff_tail_call:
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; CHECK: ; %bb.0:
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; CHECK-NEXT: pacibsp
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; CHECK-NEXT: .cfi_negate_ra_state
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; CHECK-NEXT: orr x29, x29, #0x1000000000000000
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; CHECK-NEXT: sub sp, sp, #32
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; CHECK-NEXT: stp x29, x30, [sp, #16] ; 16-byte Folded Spill
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; CHECK-NEXT: add x16, sp, #8
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; CHECK-NEXT: movk x16, #49946, lsl #48
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; CHECK-NEXT: mov x17, x22
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; CHECK-NEXT: pacdb x17, x16
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; CHECK-NEXT: str x17, [sp, #8]
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; CHECK-NEXT: add x29, sp, #16
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; CHECK-NEXT: .cfi_def_cfa w29, 16
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; CHECK-NEXT: .cfi_offset w30, -8
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: ldp x29, x30, [sp, #16] ; 16-byte Folded Reload
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; CHECK-NEXT: and x29, x29, #0xefffffffffffffff
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; CHECK-NEXT: add sp, sp, #32
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; CHECK-NEXT: autibsp
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; CHECK-NEXT: eor x16, x30, x30, lsl #1
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; CHECK-NEXT: tbz x16, #62, Lauth_success_1
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; CHECK-NEXT: brk #0xc471
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; CHECK-NEXT: Lauth_success_1:
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; CHECK-NEXT: b _callee_no_stack_args
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musttail call swifttailcc void @callee_no_stack_args(ptr swiftasync %ctx)
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ret void
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}
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