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-rw-r--r--utils/TableGen/CodeGenInstruction.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/utils/TableGen/CodeGenInstruction.cpp b/utils/TableGen/CodeGenInstruction.cpp
index 37c2069..2a5b0bf9 100644
--- a/utils/TableGen/CodeGenInstruction.cpp
+++ b/utils/TableGen/CodeGenInstruction.cpp
@@ -21,7 +21,8 @@ static void ParseConstraint(const std::string &CStr, CodeGenInstruction *I) {
// FIXME: Only supports TIED_TO for now.
std::string::size_type pos = CStr.find_first_of('=');
assert(pos != std::string::npos && "Unrecognized constraint");
- std::string Name = CStr.substr(0, pos);
+ std::string::size_type start = CStr.find_first_not_of(" \t");
+ std::string Name = CStr.substr(start, pos);
// TIED_TO: $src1 = $dst
std::string::size_type wpos = Name.find_first_of(" \t");