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llvm-mirror/test/Linker/stack-protector-guard-module-attrs.ll
Nick Desaulniers 753fcd644e [IR] make stack-protector-guard-* flags into module attrs
D88631 added initial support for:

- -mstack-protector-guard=
- -mstack-protector-guard-reg=
- -mstack-protector-guard-offset=

flags, and D100919 extended these to AArch64. Unfortunately, these flags
aren't retained for LTO. Make them module attributes rather than
TargetOptions.

Link: https://github.com/ClangBuiltLinux/linux/issues/1378

Reviewed By: tejohnson

Differential Revision: https://reviews.llvm.org/D102742
2021-05-21 15:53:30 -07:00

78 lines
2.3 KiB
LLVM

; RUN: split-file %s %t
; RUN: not llvm-link %t/a.ll %t/b.ll 2>&1 | FileCheck --check-prefix=CHECK-KIND %s
; RUN: not llvm-link %t/c.ll %t/d.ll 2>&1 | FileCheck --check-prefix=CHECK-REG %s
; RUN: not llvm-link %t/e.ll %t/f.ll 2>&1 | FileCheck --check-prefix=CHECK-OFFSET %s
; RUN: llvm-link %t/g.ll %t/h.ll
; CHECK-KIND: error: linking module flags 'stack-protector-guard': IDs have conflicting values
; CHECK-REG: error: linking module flags 'stack-protector-guard-reg': IDs have conflicting values
; CHECK-OFFSET: error: linking module flags 'stack-protector-guard-offset': IDs have conflicting values
;--- a.ll
; Test that different values of stack-protector-guard fail.
define void @foo() sspstrong {
ret void
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"stack-protector-guard", !"sysreg"}
;--- b.ll
declare void @foo() sspstrong
define void @bar() sspstrong {
call void @foo()
ret void
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"stack-protector-guard", !"global"}
;--- c.ll
; Test that different values of stack-protector-guard-reg fail.
define void @foo() sspstrong {
ret void
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"stack-protector-guard-reg", !"sp_el0"}
;--- d.ll
declare void @foo() sspstrong
define void @bar() sspstrong {
call void @foo()
ret void
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"stack-protector-guard-reg", !"sp_el1"}
;--- e.ll
; Test that different values of stack-protector-guard-offset fail.
define void @foo() sspstrong {
ret void
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"stack-protector-guard-offset", i32 257}
;--- f.ll
declare void @foo() sspstrong
define void @bar() sspstrong {
call void @foo()
ret void
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"stack-protector-guard-offset", i32 256}
;--- g.ll
; Test that the same values for the three module attributes succeed.
define void @foo() sspstrong {
ret void
}
!llvm.module.flags = !{!0, !1, !2}
!0 = !{i32 1, !"stack-protector-guard", !"sysreg"}
!1 = !{i32 1, !"stack-protector-guard-reg", !"sp_el0"}
!2 = !{i32 1, !"stack-protector-guard-offset", i32 257}
;--- h.ll
declare void @foo() sspstrong
define void @bar() sspstrong {
call void @foo()
ret void
}
!llvm.module.flags = !{!0, !1, !2}
!0 = !{i32 1, !"stack-protector-guard", !"sysreg"}
!1 = !{i32 1, !"stack-protector-guard-reg", !"sp_el0"}
!2 = !{i32 1, !"stack-protector-guard-offset", i32 257}