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-rw-r--r--clang/lib/Basic/TargetInfo.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/Basic/TargetInfo.cpp b/clang/lib/Basic/TargetInfo.cpp
index 35d9ccd401d..9cd12493e7a 100644
--- a/clang/lib/Basic/TargetInfo.cpp
+++ b/clang/lib/Basic/TargetInfo.cpp
@@ -188,6 +188,9 @@ bool TargetInfo::validateOutputConstraint(ConstraintInfo &Info) const {
}
case '&': // early clobber.
break;
+ case '%': // commutative.
+ // FIXME: Check that there is a another register after this one.
+ break;
case 'r': // general register.
Info.setAllowsRegister();
break;
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