derek.holloway
7502bf64a4
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117 lines
4.5 KiB
LLVM
117 lines
4.5 KiB
LLVM
; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel=0 -fast-isel=0 -relocation-model=pic \
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; RUN: -mattr=+pauth -mattr=+fpac -o - %s | FileCheck --check-prefixes=CHECK,NOTRAP %s
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; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel=0 -fast-isel=0 -relocation-model=pic \
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; RUN: -mattr=+pauth -o - %s | FileCheck --check-prefixes=CHECK,TRAP %s
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; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel=0 -fast-isel=1 -relocation-model=pic \
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; RUN: -mattr=+pauth -mattr=+fpac -o - %s | FileCheck --check-prefixes=CHECK,NOTRAP %s
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; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel=0 -fast-isel=1 -relocation-model=pic \
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; RUN: -mattr=+pauth -o - %s | FileCheck --check-prefixes=CHECK,TRAP %s
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; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel=1 -global-isel-abort=1 -relocation-model=pic \
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; RUN: -mattr=+pauth -mattr=+fpac -o - %s | FileCheck --check-prefixes=CHECK,NOTRAP %s
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; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel=1 -global-isel-abort=1 -relocation-model=pic \
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; RUN: -mattr=+pauth -o - %s | FileCheck --check-prefixes=CHECK,TRAP %s
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; RUN: llc -mtriple=aarch64-none-linux-gnu -code-model=tiny -mattr=+pauth -mattr=+fpac -o - %s | \
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; RUN: FileCheck --check-prefixes=CHECK-TINY,NOTRAP-TINY %s
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; RUN: llc -mtriple=aarch64-none-linux-gnu -code-model=tiny -mattr=+pauth -o - %s | \
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; RUN: FileCheck --check-prefixes=CHECK-TINY,TRAP-TINY %s
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;; Note: for FastISel, we fall back to SelectionDAG
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declare extern_weak dso_local i32 @var()
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define ptr @foo() {
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; The usual ADRP/ADD pair can't be used for a weak reference because it must
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; evaluate to 0 if the symbol is undefined. We use a GOT entry for PIC
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; otherwise a litpool entry.
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ret ptr @var
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; CHECK-LABEL: foo:
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; CHECK: adrp x17, :got_auth:var
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; CHECK-NEXT: add x17, x17, :got_auth_lo12:var
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; NOTRAP-NEXT: ldr x0, [x17]
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; NOTRAP-NEXT: cbz x0, .Lundef_weak0
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; NOTRAP-NEXT: autia x0, x17
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; TRAP-NEXT: ldr x16, [x17]
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; TRAP-NEXT: cbz x16, .Lundef_weak0
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; TRAP-NEXT: autia x16, x17
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; CHECK-NEXT: .Lundef_weak0:
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; TRAP-NEXT: mov x17, x16
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; TRAP-NEXT: xpaci x17
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; TRAP-NEXT: cmp x16, x17
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; TRAP-NEXT: b.eq .Lauth_success_0
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; TRAP-NEXT: brk #0xc470
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; TRAP-NEXT: .Lauth_success_0:
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; TRAP-NEXT: mov x0, x16
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; CHECK-NEXT: ret
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; CHECK-TINY-LABEL: foo:
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; CHECK-TINY: adr x17, :got_auth:var
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; NOTRAP-TINY-NEXT: ldr x0, [x17]
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; NOTRAP-TINY-NEXT: cbz x0, .Lundef_weak0
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; NOTRAP-TINY-NEXT: autia x0, x17
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; TRAP-TINY-NEXT: ldr x16, [x17]
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; TRAP-TINY-NEXT: cbz x16, .Lundef_weak0
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; TRAP-TINY-NEXT: autia x16, x17
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; CHECK-TINY-NEXT: .Lundef_weak0:
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; TRAP-TINY-NEXT: mov x17, x16
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; TRAP-TINY-NEXT: xpaci x17
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; TRAP-TINY-NEXT: cmp x16, x17
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; TRAP-TINY-NEXT: b.eq .Lauth_success_0
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; TRAP-TINY-NEXT: brk #0xc470
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; TRAP-TINY-NEXT: .Lauth_success_0:
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; TRAP-TINY-NEXT: mov x0, x16
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; CHECK-TINY-NEXT: ret
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}
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@arr_var = extern_weak global [10 x i32]
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define ptr @bar() {
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%addr = getelementptr [10 x i32], ptr @arr_var, i32 0, i32 5
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ret ptr %addr
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; CHECK-LABEL: bar:
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; CHECK: adrp x17, :got_auth:arr_var
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; CHECK-NEXT: add x17, x17, :got_auth_lo12:arr_var
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; NOTRAP-NEXT: ldr x8, [x17]
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; NOTRAP-NEXT: cbz x8, .Lundef_weak1
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; NOTRAP-NEXT: autda x8, x17
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; TRAP-NEXT: ldr x16, [x17]
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; TRAP-NEXT: cbz x16, .Lundef_weak1
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; TRAP-NEXT: autda x16, x17
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; CHECK-NEXT: .Lundef_weak1:
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; TRAP-NEXT: mov x17, x16
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; TRAP-NEXT: xpacd x17
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; TRAP-NEXT: cmp x16, x17
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; TRAP-NEXT: b.eq .Lauth_success_1
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; TRAP-NEXT: brk #0xc472
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; TRAP-NEXT: .Lauth_success_1:
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; TRAP-NEXT: mov x8, x16
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; CHECK-NEXT: add x0, x8, #20
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; CHECK-NEXT: ret
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; CHECK-TINY-LABEL: bar:
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; CHECK-TINY: adr x17, :got_auth:arr_var
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; NOTRAP-TINY-NEXT: ldr x8, [x17]
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; NOTRAP-TINY-NEXT: cbz x8, .Lundef_weak1
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; NOTRAP-TINY-NEXT: autda x8, x17
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; TRAP-TINY-NEXT: ldr x16, [x17]
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; TRAP-TINY-NEXT: cbz x16, .Lundef_weak1
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; TRAP-TINY-NEXT: autda x16, x17
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; CHECK-TINY-NEXT: .Lundef_weak1:
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; TRAP-TINY-NEXT: mov x17, x16
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; TRAP-TINY-NEXT: xpacd x17
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; TRAP-TINY-NEXT: cmp x16, x17
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; TRAP-TINY-NEXT: b.eq .Lauth_success_1
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; TRAP-TINY-NEXT: brk #0xc472
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; TRAP-TINY-NEXT: .Lauth_success_1:
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; TRAP-TINY-NEXT: mov x8, x16
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; CHECK-TINY-NEXT: add x0, x8, #20
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; CHECK-TINY-NEXT: ret
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}
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!llvm.module.flags = !{!0}
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!0 = !{i32 8, !"ptrauth-elf-got", i32 1}
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