derek.holloway
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50 lines
2.0 KiB
LLVM
50 lines
2.0 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple=ppc64le-unknown-linux %s -global-isel -stop-after=irtranslator -o - | FileCheck %s --check-prefix=LINUX
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; RUN: llc -verify-machineinstrs -mtriple=ppc64le-unknown-openbsd %s -global-isel -stop-after=irtranslator -o - | FileCheck %s --check-prefix=OPENBSD
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; The stack guard on Linux
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@__stack_chk_guard = external global ptr
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; The stack guard on OpenBSD
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@__guard_local = external hidden global ptr
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declare void @llvm.stackprotector(ptr, ptr)
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; LINUX-LABEL: name: test_stack_guard_linux
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; LINUX: frameInfo:
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; LINUX: stackProtector: '%stack.0.StackGuardSlot'
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; LINUX: stack:
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; LINUX: - { id: 0, name: StackGuardSlot, type: default, offset: 0, size: 8, alignment: 8,
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; LINUX-NOT: id: 1
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; LINUX: [[GUARD_SLOT:%[0-9]+]]:_(p0) = G_FRAME_INDEX %stack.0.StackGuardSlot
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; LINUX: [[GUARD:%[0-9]+]]:g8rc(p0) = LOAD_STACK_GUARD :: (dereferenceable invariant load (p0) from @__stack_chk_guard)
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; LINUX: G_STORE [[GUARD]](p0), [[GUARD_SLOT]](p0) :: (volatile store (p0) into %stack.0.StackGuardSlot)
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define void @test_stack_guard_linux() {
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%StackGuardSlot = alloca ptr
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call void @llvm.stackprotector(ptr undef, ptr %StackGuardSlot)
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ret void
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}
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; OPENBSD-LABEL: name: test_stack_guard_openbsd
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; OPENBSD: frameInfo:
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; OPENBSD: stackProtector: '%stack.0.StackGuardSlot'
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; OPENBSD: stack:
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; OPENBSD: - { id: 0, name: StackGuardSlot, type: default, offset: 0, size: 8, alignment: 8,
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; OPENBSD-NOT: id: 1
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; OPENBSD: [[GUARD_LOCAL:%[0-9]+]]:_(p0) = G_GLOBAL_VALUE @__guard_local
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; OPENBSD: [[GUARD_SLOT:%[0-9]+]]:_(p0) = G_FRAME_INDEX %stack.0.StackGuardSlot
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; OPENBSD: [[GUARD:%[0-9]+]]:_(p0) = G_LOAD [[GUARD_LOCAL]](p0) :: (load (p0) from @__guard_local)
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; OPENBSD: G_STORE [[GUARD]](p0), [[GUARD_SLOT]](p0) :: (volatile store (p0) into %stack.0.StackGuardSlot)
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define void @test_stack_guard_openbsd() {
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%StackGuardSlot = alloca ptr
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%StackGuard = load ptr, ptr @__guard_local
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call void @llvm.stackprotector(ptr %StackGuard, ptr %StackGuardSlot)
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ret void
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}
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