1 files changed, 38 insertions, 0 deletions
diff --git a/test/Sema/inline-asm-validate-aarch64.c b/test/Sema/inline-asm-validate-aarch64.c
new file mode 100644
index 000000000000..1364b6421eb0
--- /dev/null
+++ b/test/Sema/inline-asm-validate-aarch64.c
@@ -0,0 +1,38 @@
+// RUN: %clang_cc1 -triple arm64-apple-darwin -fsyntax-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
+
+typedef unsigned char uint8_t;
+
+uint8_t constraint_r(uint8_t *addr) {
+  uint8_t byte;
+
+  __asm__ volatile("ldrb %0, [%1]" : "=r" (byte) : "r" (addr) : "memory");
+// CHECK: warning: value size does not match register size specified by the constraint and modifier
+// CHECK: note: use constraint modifier "w"
+// CHECK: fix-it:{{.*}}:{8:26-8:28}:"%w0"
+
+  return byte;
+}
+
+uint8_t constraint_r_symbolic(uint8_t *addr) {
+  uint8_t byte;
+
+  __asm__ volatile("ldrb %[s0], [%[s1]]" : [s0] "=r" (byte) : [s1] "r" (addr) : "memory");
+// CHECK: warning: value size does not match register size specified by the constraint and modifier
+// CHECK: note: use constraint modifier "w"
+// CHECK: fix-it:{{.*}}:{19:26-19:31}:"%w[s0]"
+
+  return byte;
+}
+
+#define PERCENT "%"
+
+uint8_t constraint_r_symbolic_macro(uint8_t *addr) {
+  uint8_t byte;
+
+  __asm__ volatile("ldrb "PERCENT"[s0], [%[s1]]" : [s0] "=r" (byte) : [s1] "r" (addr) : "memory");
+// CHECK: warning: value size does not match register size specified by the constraint and modifier
+// CHECK: note: use constraint modifier "w"
+// CHECK-NOT: fix-it
+
+  return byte;
+}