ea859005b5
Just insert addrspacecast in cases where the alloca uses a different address space, since I don't know what else you could possibly do.
30 lines
1.3 KiB
LLVM
30 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=safe-stack -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s --check-prefix=TLS
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target datalayout = "A5"
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; Use has wrong address space for the alloca, addrspacecast is inserted.
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define void @correct_alloca_addrspace() nounwind uwtable safestack {
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; TLS-LABEL: define void @correct_alloca_addrspace(
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; TLS-SAME: ) #[[ATTR0:[0-9]+]] !annotation [[META0:![0-9]+]] {
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; TLS-NEXT: [[ENTRY:.*:]]
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; TLS-NEXT: [[UNSAFE_STACK_PTR:%.*]] = load ptr addrspace(5), ptr @__safestack_unsafe_stack_ptr, align 8
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; TLS-NEXT: [[UNSAFE_STACK_STATIC_TOP:%.*]] = getelementptr i8, ptr addrspace(5) [[UNSAFE_STACK_PTR]], i32 -16
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; TLS-NEXT: store ptr addrspace(5) [[UNSAFE_STACK_STATIC_TOP]], ptr @__safestack_unsafe_stack_ptr, align 8
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; TLS-NEXT: [[TMP0:%.*]] = getelementptr i8, ptr addrspace(5) [[UNSAFE_STACK_PTR]], i32 -8
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; TLS-NEXT: [[A_UNSAFE:%.*]] = addrspacecast ptr addrspace(5) [[TMP0]] to ptr
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; TLS-NEXT: call void @Capture(ptr [[A_UNSAFE]])
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; TLS-NEXT: store ptr addrspace(5) [[UNSAFE_STACK_PTR]], ptr @__safestack_unsafe_stack_ptr, align 8
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; TLS-NEXT: ret void
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;
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entry:
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%a = alloca i8, align 8
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call void @Capture(ptr %a)
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ret void
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}
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declare void @Capture(ptr)
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;.
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; TLS: [[META0]] = !{!"unsafe-stack-size", i32 16}
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;.
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