From 55e59e139d9ebcaae16d710472e28edbcafac98a Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Thu, 24 Sep 2009 05:12:36 +0000
Subject: [PATCH] Darwin/x86-32: Enumerated types and block pointer types in
 structures were not handled correctly.  - <rdar://problem/7247671> Function
 arguments incorrect when function returns a    struct on i386 w/ llvm-g++ and
 clang

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82681 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/TargetABIInfo.cpp   | 10 +++++---
 test/CodeGen/x86_32-arguments.c | 45 ++++++++++++++++++++++++++++++++-
 2 files changed, 51 insertions(+), 4 deletions(-)

diff --git a/lib/CodeGen/TargetABIInfo.cpp b/lib/CodeGen/TargetABIInfo.cpp
index 3ad8cfc36f..da30060ecd 100644
--- a/lib/CodeGen/TargetABIInfo.cpp
+++ b/lib/CodeGen/TargetABIInfo.cpp
@@ -159,7 +159,9 @@ static const Type *isSingleElementStruct(QualType T, ASTContext &Context) {
 }
 
 static bool is32Or64BitBasicType(QualType Ty, ASTContext &Context) {
-  if (!Ty->getAs<BuiltinType>() && !Ty->isPointerType())
+  if (!Ty->getAs<BuiltinType>() && !Ty->isAnyPointerType() &&
+      !Ty->isAnyComplexType() && !Ty->isEnumeralType() &&
+      !Ty->isBlockPointerType())
     return false;
 
   uint64_t Size = Context.getTypeSize(Ty);
@@ -291,8 +293,10 @@ bool X86_32ABIInfo::shouldReturnTypeInRegister(QualType Ty,
     return true;
   }
 
-  // If this is a builtin, pointer, or complex type, it is ok.
-  if (Ty->getAs<BuiltinType>() || Ty->isPointerType() || Ty->isAnyComplexType())
+  // If this is a builtin, pointer, enum, or complex type, it is ok.
+  if (Ty->getAs<BuiltinType>() || Ty->isAnyPointerType() || 
+      Ty->isAnyComplexType() || Ty->isEnumeralType() ||
+      Ty->isBlockPointerType())
     return true;
 
   // Arrays are treated like records.
diff --git a/test/CodeGen/x86_32-arguments.c b/test/CodeGen/x86_32-arguments.c
index 7464595dce..78fb8342ee 100644
--- a/test/CodeGen/x86_32-arguments.c
+++ b/test/CodeGen/x86_32-arguments.c
@@ -1,4 +1,4 @@
-// RUN: clang-cc -triple i386-apple-darwin9 -emit-llvm -o %t %s &&
+// RUN: clang-cc -fblocks -triple i386-apple-darwin9 -emit-llvm -o %t %s &&
 // RUN: grep 'define signext i8 @f0()' %t &&
 // RUN: grep 'define signext i16 @f1()' %t &&
 // RUN: grep 'define i32 @f2()' %t &&
@@ -159,4 +159,47 @@ typedef int v39 __attribute((vector_size(16)));
 struct s39 { v39 x; };
 void f39(struct s39 x) {}
 
+// <rdar://problem/7247671>
+// RUN: grep 'define i32 @f40()' %t &&
+enum e40 { ec0 = 0 };
+enum e40 f40(void) { }
+
+// RUN: grep 'define void ()\* @f41()' %t &&
+typedef void (^vvbp)(void);
+vvbp f41(void) { }
+
+// RUN: grep 'define i32 @f42()' %t &&
+struct s42 { enum e40 f0; } f42(void) {  }
+
+// RUN: grep 'define i64 @f43()' %t &&
+struct s43 { enum e40 f0; int f1; } f43(void) {  }
+
+// RUN: grep 'define i32 @f44()' %t &&
+struct s44 { vvbp f0; } f44(void) {  }
+
+// RUN: grep 'define i64 @f45()' %t &&
+struct s45 { vvbp f0; int f1; } f45(void) {  }
+
+// RUN: grep 'define void @f46(i32 %a0)' %t &&
+void f46(enum e40 a0) { }
+
+// RUN: grep 'define void @f47(void ()\* %a1)' %t &&
+void f47(vvbp a1) { }
+
+// RUN: grep 'define void @f48(i32 %a0.0)' %t &&
+struct s48 { enum e40 f0; };
+void f48(struct s48 a0) { }
+
+// RUN: grep 'define void @f49(i32 %a0.0, i32 %a0.1)' %t &&
+struct s49 { enum e40 f0; int f1; };
+void f49(struct s49 a0) { }
+
+// RUN: grep 'define void @f50(void ()\* %a0.0)' %t &&
+struct s50 { vvbp f0; };
+void f50(struct s50 a0) { }
+
+// RUN: grep 'define void @f51(void ()\* %a0.0, i32 %a0.1)' %t &&
+struct s51 { vvbp f0; int f1; };
+void f51(struct s51 a0) { }
+
 // RUN: true
-- 
2.40.0