Inline asm IR input register constraints don't have early clobber

modifiers on them. If we have a matching output constraint with
an early clobber make sure we don't propagate that to the input
constraint.

llvm-svn: 228422

1 files changed, 3 insertions, 4 deletions

diff --git a/clang/lib/CodeGen/CGStmt.cpp b/clang/lib/CodeGen/CGStmt.cpp
index 8e1c7f2d197..d921c0d9b97 100644
--- a/clang/lib/CodeGen/CGStmt.cpp
+++ b/clang/lib/CodeGen/CGStmt.cpp
@@ -1957,10 +1957,9 @@ void CodeGenFunction::EmitAsmStmt(const AsmStmt &S) {
     InputConstraint = SimplifyConstraint(InputConstraint.c_str(), getTarget(),
                                          &OutputConstraintInfos);
 
-    InputConstraint =
-      AddVariableConstraints(InputConstraint,
-                            *InputExpr->IgnoreParenNoopCasts(getContext()),
-                            getTarget(), CGM, S, Info.earlyClobber());
+    InputConstraint = AddVariableConstraints(
+        InputConstraint, *InputExpr->IgnoreParenNoopCasts(getContext()),
+        getTarget(), CGM, S, false /* No EarlyClobber */);
 
     llvm::Value *Arg = EmitAsmInput(Info, InputExpr, Constraints);