r300762 - Fix assertion failure in codegen on non-template deduction guide.

[Richard Smith via cfe-commits]

Author: rsmith
Date: Wed Apr 19 16:15:45 2017
New Revision: 300762

URL: http://llvm.org/viewvc/llvm-project?rev=300762&view=rev
Log:
Fix assertion failure in codegen on non-template deduction guide.

Added:
    cfe/trunk/test/CodeGenCXX/cxx1z-class-deduction.cpp
Modified:
    cfe/trunk/lib/CodeGen/CodeGenModule.cpp

Modified: cfe/trunk/lib/CodeGen/CodeGenModule.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenModule.cpp?rev=300762&r1=300761&r2=300762&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenModule.cpp (original)
+++ cfe/trunk/lib/CodeGen/CodeGenModule.cpp Wed Apr 19 16:15:45 2017
@@ -3794,6 +3794,10 @@ void CodeGenModule::EmitTopLevelDecl(Dec
     AddDeferredUnusedCoverageMapping(D);
     break;
 
+  case Decl::CXXDeductionGuide:
+    // Function-like, but does not result in code emission.
+    break;
+
   case Decl::Var:
   case Decl::Decomposition:
     // Skip variable templates

Added: cfe/trunk/test/CodeGenCXX/cxx1z-class-deduction.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/cxx1z-class-deduction.cpp?rev=300762&view=auto
==============================================================================
--- cfe/trunk/test/CodeGenCXX/cxx1z-class-deduction.cpp (added)
+++ cfe/trunk/test/CodeGenCXX/cxx1z-class-deduction.cpp Wed Apr 19 16:15:45 2017
@@ -0,0 +1,21 @@
+// RUN: %clang_cc1 -std=c++1z %s -emit-llvm -o - | FileCheck %s
+
+template<typename T> struct A {
+  A(T = 0);
+  A(void*);
+};
+
+template<typename T> A(T*) -> A<long>;
+A() -> A<int>;
+
+// CHECK-LABEL: @_Z1fPi(
+void f(int *p) {
+  // CHECK: @_ZN1AIiEC
+  A a{};
+
+  // CHECK: @_ZN1AIlEC
+  A b = p;
+
+  // CHECK: @_ZN1AIxEC
+  A c = 123LL;
+}