Check that the input size is correct for the given constraint.
The 'a', 'c', and 'd' constraints on i386 mean a 32-bit register. We cannot
place a 64-bit value into the 32-bit register. Error out instead of causing the
compiler to spew general badness.
<rdar://problem/12415959>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167717 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 26a4f41..ea4ac27 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -2595,6 +2595,19 @@
if (RegNo == 1) return 2;
return -1;
}
+ virtual bool validateInputSize(StringRef Constraint,
+ unsigned Size) const {
+ switch (Constraint[0]) {
+ default: break;
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ return Size == 32;
+ }
+
+ return true;
+ }
};
} // end anonymous namespace