Front-End: precise: capture noContraction on output parameter declarations.

Test/baseResults/specExamples.vert.out

@@ -83,10 +83,10 @@ ERROR: node is still EOpNull!
 0:153    Function Parameters: 
 0:153      'i' (in float)
 0:153      'j' (in float)
-0:153      'k' (out float)
+0:153      'k' (noContraction out float)
 0:155    Sequence
 0:155      move second child to first child (temp float)
-0:155        'k' (out float)
+0:155        'k' (noContraction out float)
 0:155        add (temp float)
 0:155          component-wise multiply (temp float)
 0:155            'i' (in float)
@@ -367,10 +367,10 @@ ERROR: node is still EOpNull!
 0:153    Function Parameters: 
 0:153      'i' (in float)
 0:153      'j' (in float)
-0:153      'k' (out float)
+0:153      'k' (noContraction out float)
 0:155    Sequence
 0:155      move second child to first child (temp float)
-0:155        'k' (out float)
+0:155        'k' (noContraction out float)
 0:155        add (temp float)
 0:155          component-wise multiply (temp float)
 0:155            'i' (in float)

glslang/MachineIndependent/ParseHelper.cpp

@@ -3538,6 +3538,7 @@ void TParseContext::paramCheckFix(const TSourceLoc& loc, const TQualifier& quali
         type.getQualifier().writeonly = qualifier.writeonly;
         type.getQualifier().restrict  = qualifier.restrict;
     }
+
     if (qualifier.isAuxiliary() ||
         qualifier.isInterpolation())
         error(loc, "cannot use auxiliary or interpolation qualifiers on a function parameter", "", "");
@@ -3545,8 +3546,12 @@ void TParseContext::paramCheckFix(const TSourceLoc& loc, const TQualifier& quali
         error(loc, "cannot use layout qualifiers on a function parameter", "", "");
     if (qualifier.invariant)
         error(loc, "cannot use invariant qualifier on a function parameter", "", "");
-    if (qualifier.noContraction && qualifier.storage != EvqOut && qualifier.storage != EvqInOut)
-        warn(loc, "qualifier has no effect on non-output parameters", "precise", "");
+    if (qualifier.noContraction) {
+        if (qualifier.storage == EvqOut || qualifier.storage == EvqInOut)
+            type.getQualifier().noContraction = true;
+        else
+            warn(loc, "qualifier has no effect on non-output parameters", "precise", "");
+    }
 
     paramCheckFix(loc, qualifier.storage, type);
 }