[COFF] Add ARM64 intrinsics: __yield, __wfe, __wfi, __sev, __sevl

Summary: These intrinsics result in hint instructions. They are provided here for MSVC ARM64 compatibility.

Reviewers: mstorsjo, compnerd, javed.absar

Reviewed By: mstorsjo

Subscribers: kristof.beyls, chrib, cfe-commits

Differential Revision: https://reviews.llvm.org/D48132

llvm-svn: 334639

1 files changed, 35 insertions, 0 deletions

diff --git a/clang/test/CodeGen/arm64-microsoft-intrinsics.c b/clang/test/CodeGen/arm64-microsoft-intrinsics.c
index ff802e7f9b8..2dbf1f9ea0f 100644
--- a/clang/test/CodeGen/arm64-microsoft-intrinsics.c
+++ b/clang/test/CodeGen/arm64-microsoft-intrinsics.c
@@ -24,3 +24,38 @@ void check__isb(void) {
 
 // CHECK-MSVC: @llvm.aarch64.isb(i32 0)
 // CHECK-LINUX: error: implicit declaration of function '__isb'
+
+void check__yield(void) {
+  __yield();
+}
+
+// CHECK-MSVC: @llvm.aarch64.hint(i32 1)
+// CHECK-LINUX: error: implicit declaration of function '__yield'
+
+void check__wfe(void) {
+  __wfe();
+}
+
+// CHECK-MSVC: @llvm.aarch64.hint(i32 2)
+// CHECK-LINUX: error: implicit declaration of function '__wfe'
+
+void check__wfi(void) {
+  __wfi();
+}
+
+// CHECK-MSVC: @llvm.aarch64.hint(i32 3)
+// CHECK-LINUX: error: implicit declaration of function '__wfi'
+
+void check__sev(void) {
+  __sev();
+}
+
+// CHECK-MSVC: @llvm.aarch64.hint(i32 4)
+// CHECK-LINUX: error: implicit declaration of function '__sev'
+
+void check__sevl(void) {
+  __sevl();
+}
+
+// CHECK-MSVC: @llvm.aarch64.hint(i32 5)
+// CHECK-LINUX: error: implicit declaration of function '__sevl'