056733d019
Using the proper API automatically sets `__stack_chk_guard` to `dso_local` if `Reloc::Static`. This wasn't strictly necessary until recently when dso_local was no longer implied by `TargetMachine::shouldAssumeDSOLocal` for `__stack_chk_guard`. By using the proper API, we can avoid generating unnecessary GOT relocations. Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D102646
27 lines
1.3 KiB
LLVM
27 lines
1.3 KiB
LLVM
; RUN: opt -safe-stack -S -mtriple=i686-pc-linux-gnu < %s -o - | FileCheck --check-prefixes=COMMON,TLS32 %s
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; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck --check-prefixes=COMMON,TLS64 %s
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; RUN: opt -safe-stack -S -mtriple=i686-linux-android < %s -o - | FileCheck --check-prefixes=COMMON,GLOBAL32 %s
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; RUN: opt -safe-stack -S -mtriple=i686-linux-android24 < %s -o - | FileCheck --check-prefixes=COMMON,TLS32 %s
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; RUN: opt -safe-stack -S -mtriple=x86_64-linux-android < %s -o - | FileCheck --check-prefixes=COMMON,TLS64 %s
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; RUN: opt -safe-stack -S -mtriple=x86_64-unknown-fuchsia < %s -o - | FileCheck --check-prefixes=COMMON,FUCHSIA64 %s
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define void @foo() safestack sspreq {
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entry:
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; TLS32: %[[StackGuard:.*]] = load i8*, i8* addrspace(256)* inttoptr (i32 20 to i8* addrspace(256)*)
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; TLS64: %[[StackGuard:.*]] = load i8*, i8* addrspace(257)* inttoptr (i32 40 to i8* addrspace(257)*)
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; FUCHSIA64: %[[StackGuard:.*]] = load i8*, i8* addrspace(257)* inttoptr (i32 16 to i8* addrspace(257)*)
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; GLOBAL32: %[[StackGuard:.*]] = call i8* @llvm.stackguard()
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; COMMON: store i8* %[[StackGuard]], i8** %[[StackGuardSlot:.*]]
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%a = alloca i8, align 1
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call void @Capture(i8* %a)
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; COMMON: %[[A:.*]] = load i8*, i8** %[[StackGuardSlot]]
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; COMMON: icmp ne i8* %[[StackGuard]], %[[A]]
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ret void
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}
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declare void @Capture(i8*)
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