Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/test/CodeGen/X86/safestack.ll

@@ -0,0 +1,37 @@
+; 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
+; RUN: llc -mtriple=x86_64-fuchsia < %s -o - | FileCheck --check-prefix=FUCHSIA-X64 %s
+
+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-X64: movq %fs:24, %[[A:.*]]
+; FUCHSIA-X64: leaq -16(%[[A]]), %[[B:.*]]
+; FUCHSIA-X64: movq %[[B]], %fs:24