Handle '*' and '#' asm constraint modifiers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166924 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 8 insertions, 0 deletions

diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp
index b89b18b3ae..3257526289 100644
--- a/lib/Basic/TargetInfo.cpp
+++ b/lib/Basic/TargetInfo.cpp
@@ -364,6 +364,8 @@ bool TargetInfo::validateOutputConstraint(ConstraintInfo &Info) const {
       break;
     case '?': // Disparage slightly code.
     case '!': // Disparage severely.
+    case '#': // Ignore as constraint.
+    case '*': // Ignore for choosing register preferences.
       break;  // Pass them.
     }
 
@@ -483,6 +485,8 @@ bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints,
       break;
     case '?': // Disparage slightly code.
     case '!': // Disparage severely.
+    case '#': // Ignore as constraint.
+    case '*': // Ignore for choosing register preferences.
       break;  // Pass them.
     }
 
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index 5c1fea4472..3548dbac6f 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -1280,6 +1280,10 @@ SimplifyConstraint(const char *Constraint, const TargetInfo &Target,
     case '=': // Will see this and the following in mult-alt constraints.
     case '+':
       break;
+    case '#': // Ignore the rest of the constraint alternative.
+      while (Constraint[1] && Constraint[1] != ',')
+	Constraint++;
+      break;
     case ',':
       Result += "|";
       break;