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llvm-project/llvm/test/CodeGen/X86/safestack.ll

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[safestack] Fix a stupid mix-up in the direct-tls code path. llvm-svn: 248863
2015-09-30 08:01:47 +08:00
; 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=ANDROID-I386 %s
; RUN: llc -mtriple=x86_64-linux-android < %s -o - | FileCheck --check-prefix=ANDROID-X64 %s
[Fuchsia] Use thread-pointer ABI slots for stack-protector and safe-stack The Fuchsia ABI defines slots from the thread pointer where the stack-guard value for stack-protector, and the unsafe stack pointer for safe-stack, are stored. This parallels the Android ABI support. Patch by Roland McGrath Differential Revision: https://reviews.llvm.org/D30237 llvm-svn: 296081
2017-02-24 11:10:10 +08:00
; RUN: llc -mtriple=x86_64-fuchsia < %s -o - | FileCheck --check-prefix=FUCHSIA-X64 %s
[safestack] Fix a stupid mix-up in the direct-tls code path. llvm-svn: 248863
2015-09-30 08:01:47 +08:00
[safestack] Inline safestack pointer access when possible. Summary: This adds an -mllvm flag that forces the use of a runtime function call to get the unsafe stack pointer, the same that is currently used on non-x86, non-aarch64 android. The call may be inlined. Reviewers: pcc Subscribers: aemerson, kristof.beyls, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D37405 llvm-svn: 323259
2018-01-24 05:27:07 +08:00
; RUN: llc -mtriple=i386-linux -safestack-use-pointer-address < %s -o - | FileCheck --check-prefix=LINUX-I386-PA %s
[safestack] Fix a stupid mix-up in the direct-tls code path. llvm-svn: 248863
2015-09-30 08:01:47 +08:00
define void @_Z1fv() safestack {
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 __safestack_unsafe_stack_ptr@GOTTPOFF(%rip), %[[A:.*]]
; LINUX-X64: movq %fs:(%[[A]]), %[[B:.*]]
; LINUX-X64: leaq -16(%[[B]]), %[[C:.*]]
; LINUX-X64: movq %[[C]], %fs:(%[[A]])
; LINUX-I386: movl __safestack_unsafe_stack_ptr@INDNTPOFF, %[[A:.*]]
; LINUX-I386: movl %gs:(%[[A]]), %[[B:.*]]
; LINUX-I386: leal -16(%[[B]]), %[[C:.*]]
; LINUX-I386: movl %[[C]], %gs:(%[[A]])
; ANDROID-I386: movl %gs:36, %[[A:.*]]
; ANDROID-I386: leal -16(%[[A]]), %[[B:.*]]
; ANDROID-I386: movl %[[B]], %gs:36
; ANDROID-X64: movq %fs:72, %[[A:.*]]
; ANDROID-X64: leaq -16(%[[A]]), %[[B:.*]]
; ANDROID-X64: movq %[[B]], %fs:72
[Fuchsia] Use thread-pointer ABI slots for stack-protector and safe-stack The Fuchsia ABI defines slots from the thread pointer where the stack-guard value for stack-protector, and the unsafe stack pointer for safe-stack, are stored. This parallels the Android ABI support. Patch by Roland McGrath Differential Revision: https://reviews.llvm.org/D30237 llvm-svn: 296081
2017-02-24 11:10:10 +08:00
; FUCHSIA-X64: movq %fs:24, %[[A:.*]]
; FUCHSIA-X64: leaq -16(%[[A]]), %[[B:.*]]
; FUCHSIA-X64: movq %[[B]], %fs:24
[safestack] Inline safestack pointer access when possible. Summary: This adds an -mllvm flag that forces the use of a runtime function call to get the unsafe stack pointer, the same that is currently used on non-x86, non-aarch64 android. The call may be inlined. Reviewers: pcc Subscribers: aemerson, kristof.beyls, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D37405 llvm-svn: 323259
2018-01-24 05:27:07 +08:00
; LINUX-I386-PA: calll __safestack_pointer_address
; LINUX-I386-PA: movl %eax, %[[A:.*]]
Re-enable "[MachineCopyPropagation] Extend pass to do COPY source forwarding" Re-enable commit r323991 now that r325931 has been committed to make MachineOperand::isRenamable() check more conservative w.r.t. code changes and opt-in on a per-target basis. llvm-svn: 326208
2018-02-28 00:59:10 +08:00
; LINUX-I386-PA: movl (%eax), %[[B:.*]]
[safestack] Inline safestack pointer access when possible. Summary: This adds an -mllvm flag that forces the use of a runtime function call to get the unsafe stack pointer, the same that is currently used on non-x86, non-aarch64 android. The call may be inlined. Reviewers: pcc Subscribers: aemerson, kristof.beyls, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D37405 llvm-svn: 323259
2018-01-24 05:27:07 +08:00
; LINUX-I386-PA: leal -16(%[[B]]), %[[C:.*]]
; LINUX-I386-PA: movl %[[C]], (%[[A]])