[TABLEGEN] Do not crash on intrinsics with names longer than 40 characters

Differential Revision: http://reviews.llvm.org/D4537

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213253 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/TableGen/intrinsic-long-name.td b/test/TableGen/intrinsic-long-name.td
new file mode 100644 (file)
index 0000000..6b9ba01
--- /dev/null
+++ b/test/TableGen/intrinsic-long-name.td
@@ -0,0 +1,32 @@
+// RUN: llvm-tblgen -gen-intrinsic %s | FileCheck %s
+// XFAIL: vg_leak
+
+class IntrinsicProperty;
+
+class ValueType<int size, int value> {
+  string Namespace = "MVT";
+  int Size = size;
+  int Value = value;
+}
+
+class LLVMType<ValueType vt> {
+  ValueType VT = vt;
+}
+
+class Intrinsic<string name, list<LLVMType> param_types = []> {
+  string LLVMName = name;
+  bit isTarget = 0;
+  string TargetPrefix = "";
+  list<LLVMType> RetTypes = [];
+  list<LLVMType> ParamTypes = param_types;
+  list<IntrinsicProperty> Properties = [];
+}
+
+def iAny : ValueType<0, 254>;
+def llvm_anyint_ty : LLVMType<iAny>;
+
+// Make sure we generate the long name without crashing
+// CHECK: this_is_a_really_long_intrinsic_name_but_we_should_still_not_crash   // llvm.this.is.a.really.long.intrinsic.name.but.we.should.still.not.crash
+def int_foo : Intrinsic<"llvm.foo", [llvm_anyint_ty]>;
+def int_this_is_a_really_long_intrinsic_name_but_we_should_still_not_crash : Intrinsic<"llvm.this.is.a.really.long.intrinsic.name.but.we.should.still.not.crash", [llvm_anyint_ty]>;
+

diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp
index 430ef32896d8b9a65a183347a93468d6e287b3b1..34358c41a742cb234820439ba05f8d1203de81d1 100644 (file)
--- a/utils/TableGen/IntrinsicEmitter.cpp
+++ b/utils/TableGen/IntrinsicEmitter.cpp
@@ -129,8 +129,9 @@ void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
   for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
     OS << "    " << Ints[i].EnumName;
     OS << ((i != e-1) ? ", " : "  ");
-    OS << std::string(40-Ints[i].EnumName.size(), ' ')
-      << "// " << Ints[i].Name << "\n";
+    if (Ints[i].EnumName.size() < 40)
+      OS << std::string(40-Ints[i].EnumName.size(), ' ');
+    OS << " // " << Ints[i].Name << "\n";
   }
   OS << "#endif\n\n";
 }