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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2016-04-05 22:41:50 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2016-04-05 22:41:50 +0000 |
| commit | dde29e2799b82bf76b263eac46acf3a1ae90d206 (patch) | |
| tree | 3de199ef85cff9089e3b7b882b6b41eaf996948c /llvm/test/CodeGen/X86 | |
| parent | f8bdd88cd95e5387ad853874fe2db38edfe76c41 (diff) | |
| download | bcm5719-llvm-dde29e2799b82bf76b263eac46acf3a1ae90d206.tar.gz bcm5719-llvm-dde29e2799b82bf76b263eac46acf3a1ae90d206.zip | |
Faster stack-protector for Android/AArch64.
Bionic has a defined thread-local location for the stack protector
cookie. Emit a direct load instead of going through __stack_chk_guard.
llvm-svn: 265481
Diffstat (limited to 'llvm/test/CodeGen/X86')
| -rw-r--r-- | llvm/test/CodeGen/X86/stack-protector-target.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/stack-protector-target.ll b/llvm/test/CodeGen/X86/stack-protector-target.ll new file mode 100644 index 00000000000..3f69bfd7e7b --- /dev/null +++ b/llvm/test/CodeGen/X86/stack-protector-target.ll @@ -0,0 +1,25 @@ +; Test target-specific stack cookie location. +; RUN: llc -mtriple=i386-linux < %s -o - | FileCheck --check-prefix=LINUX-I386 %s +; RUN: llc -mtriple=x86_64-linux < %s -o - | FileCheck --check-prefix=LINUX-X64 %s +; RUN: llc -mtriple=i386-linux-android < %s -o - | FileCheck --check-prefix=LINUX-I386 %s +; RUN: llc -mtriple=x86_64-linux-android < %s -o - | FileCheck --check-prefix=LINUX-X64 %s + +define void @_Z1fv() sspreq { +entry: + %x = alloca i32, align 4 + %0 = bitcast i32* %x to i8* + call void @_Z7CapturePi(i32* nonnull %x) + ret void +} + +declare void @_Z7CapturePi(i32*) + +; LINUX-X64: movq %fs:40, %[[B:.*]] +; LINUX-X64: movq %[[B]], 16(%rsp) +; LINUX-X64: movq %fs:40, %[[C:.*]] +; LINUX-X64: cmpq 16(%rsp), %[[C]] + +; LINUX-I386: movl %gs:20, %[[B:.*]] +; LINUX-I386: movl %[[B]], 8(%esp) +; LINUX-I386: movl %gs:20, %[[C:.*]] +; LINUX-I386: cmpl 8(%esp), %[[C]] |
