When setting a tied check if it's already tied. If it's tied to another constraint it's invalid. Fixes PR3905.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118146 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/asm.c b/test/Sema/asm.c
index 73d081d..8148490 100644
--- a/test/Sema/asm.c
+++ b/test/Sema/asm.c
@@ -81,7 +81,13 @@
asm volatile (""); // expected-warning {{meaningless 'volatile' on asm outside function}}
// PR3904
-int test8(int i) {
+void test8(int i) {
// A number in an input constraint can't point to a read-write constraint.
- asm ("" : "+r" (i), "=r"(i) : "0" (i)); // expected-error{{invalid input constraint '0' in asm}}
+ asm("" : "+r" (i), "=r"(i) : "0" (i)); // expected-error{{invalid input constraint '0' in asm}}
+}
+
+// PR3905
+void test9(int i) {
+ asm("" : [foo] "=r" (i), "=r"(i) : "1[foo]"(i)); // expected-error{{invalid input constraint '1[foo]' in asm}}
+ asm("" : [foo] "=r" (i), "=r"(i) : "[foo]1"(i)); // expected-error{{invalid input constraint '[foo]1' in asm}}
}