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-rw-r--r--clang/test/Sema/asm.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/clang/test/Sema/asm.c b/clang/test/Sema/asm.c
index 9ed8d843eaf..76e20158c40 100644
--- a/clang/test/Sema/asm.c
+++ b/clang/test/Sema/asm.c
@@ -236,3 +236,15 @@ void test16()
: "m" (test16_baz)); // expected-error {{reference to a global register variable in asm output with a memory constraint 'm'}}
}
+int test17(int t0)
+{
+ int r0, r1;
+ __asm ("addl %2, %2\n\t"
+ "movl $123, %0"
+ : "=a" (r0),
+ "=&r" (r1)
+ : "1" (t0), // expected-note {{constraint '1' is already present here}}
+ "1" (t0)); // expected-error {{more than one input constraint matches the same output '1'}}
+ return r0 + r1;
+}
+
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