Make __func__ and friends work correctly within the initializer for a static

local variable.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88766 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CGExprConstant.cpp b/lib/CodeGen/CGExprConstant.cpp
index 644ec107e95e89c11b4be54ad98ca66494efb02a..b80a9416f56f614f1b2aff59ee588ee806ef4cce 100644 (file)
--- a/lib/CodeGen/CGExprConstant.cpp
+++ b/lib/CodeGen/CGExprConstant.cpp
@@ -766,13 +766,15 @@ public:
       return llvm::ConstantExpr::getBitCast(C, ConvertType(E->getType()));
     }
     case Expr::PredefinedExprClass: {
-      // __func__/__FUNCTION__ -> "".  __PRETTY_FUNCTION__ -> "top level".
-      std::string Str;
-      if (cast<PredefinedExpr>(E)->getIdentType() ==
-          PredefinedExpr::PrettyFunction)
-        Str = "top level";
+      unsigned Type = cast<PredefinedExpr>(E)->getIdentType();
+      if (CGF) {
+        LValue Res = CGF->EmitPredefinedFunctionName(Type);
+        return cast<llvm::Constant>(Res.getAddress());
+      } else if (Type == PredefinedExpr::PrettyFunction) {
+        return CGM.GetAddrOfConstantCString("top level", ".tmp");
+      }
 
-      return CGM.GetAddrOfConstantCString(Str, ".tmp");
+      return CGM.GetAddrOfConstantCString("", ".tmp");
     }
     case Expr::AddrLabelExprClass: {
       assert(CGF && "Invalid address of label expression outside function.");

diff --git a/test/CodeGen/const-init.c b/test/CodeGen/const-init.c
index caef3e14c07fea330ecc81befb0a933e6f49ca2e..06cdde9c95758da2e9bf3a8553d9ac72b05a515a 100644 (file)
--- a/test/CodeGen/const-init.c
+++ b/test/CodeGen/const-init.c
@@ -117,3 +117,9 @@ struct g22 {int x;} __attribute((packed));
 struct g23 {char a; short b; char c; struct g22 d;};
 struct g23 g24 = {1,2,3,4};
 
+// CHECK: @__func__.g25 = private constant [4 x i8] c"g25\00"
+// CHECK: @g25.g26 = internal global i8* getelementptr inbounds ([4 x i8]* @__func__.g25, i32 0, i32 0)
+int g25() {
+  static const char *g26 = __func__;
+  return *g26;
+}