Create android x86_32 and x86_64 target info

On android x86_32 the long double is only 64 bits (compared to 80 bits
on linux x86_32) and on android x86_64 the long double is IEEEquad
(compared to x87DoubleExtended on linux x86_64). This CL creates new
TargetInfo classes for this targets to represent these differences.

Differential revision: http://reviews.llvm.org/D8357

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@233177 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Basic/Targets.cpp

@@ -6506,6 +6506,30 @@ const Builtin::Info XCoreTargetInfo::BuiltinInfo[] = {
 };
 } // end anonymous namespace.
 
+namespace {
+// x86_32 Android target
+class AndroidX86_32TargetInfo : public LinuxTargetInfo<X86_32TargetInfo> {
+public:
+  AndroidX86_32TargetInfo(const llvm::Triple &Triple)
+      : LinuxTargetInfo<X86_32TargetInfo>(Triple) {
+    SuitableAlign = 32;
+    LongDoubleWidth = 64;
+    LongDoubleFormat = &llvm::APFloat::IEEEdouble;
+  }
+};
+} // end anonymous namespace
+
+namespace {
+// x86_64 Android target
+class AndroidX86_64TargetInfo : public LinuxTargetInfo<X86_64TargetInfo> {
+public:
+  AndroidX86_64TargetInfo(const llvm::Triple &Triple)
+      : LinuxTargetInfo<X86_64TargetInfo>(Triple) {
+    LongDoubleFormat = &llvm::APFloat::IEEEquad;
+  }
+};
+} // end anonymous namespace
+
 
 //===----------------------------------------------------------------------===//
 // Driver code
@@ -6783,8 +6807,14 @@ static TargetInfo *AllocateTarget(const llvm::Triple &Triple) {
       return new DarwinI386TargetInfo(Triple);
 
     switch (os) {
-    case llvm::Triple::Linux:
+    case llvm::Triple::Linux: {
-      return new LinuxTargetInfo<X86_32TargetInfo>(Triple);
+      switch (Triple.getEnvironment()) {
+      default:
+        return new LinuxTargetInfo<X86_32TargetInfo>(Triple);
+      case llvm::Triple::Android:
+        return new AndroidX86_32TargetInfo(Triple);
+      }
+    }
     case llvm::Triple::DragonFly:
       return new DragonFlyBSDTargetInfo<X86_32TargetInfo>(Triple);
     case llvm::Triple::NetBSD:
@@ -6831,8 +6861,14 @@ static TargetInfo *AllocateTarget(const llvm::Triple &Triple) {
     switch (os) {
     case llvm::Triple::CloudABI:
       return new CloudABITargetInfo<X86_64TargetInfo>(Triple);
-    case llvm::Triple::Linux:
+    case llvm::Triple::Linux: {
-      return new LinuxTargetInfo<X86_64TargetInfo>(Triple);
+      switch (Triple.getEnvironment()) {
+      default:
+        return new LinuxTargetInfo<X86_64TargetInfo>(Triple);
+      case llvm::Triple::Android:
+        return new AndroidX86_64TargetInfo(Triple);
+      }
+    }
     case llvm::Triple::DragonFly:
       return new DragonFlyBSDTargetInfo<X86_64TargetInfo>(Triple);
     case llvm::Triple::NetBSD:

test/Sema/i386-linux-android.c

@@ -0,0 +1,6 @@
+// RUN: %clang_cc1 -triple i386-linux-android -fsyntax-only -verify %s
+// expected-no-diagnostics
+
+extern int a1_0[sizeof(long double) == 8 ? 1 : -1];
+extern int a1_i[__alignof(long double) == 4 ? 1 : -1];
+

test/Sema/x86_64-linux-android.c

@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -triple x86_64-linux-android -emit-pch -o %t %s
+// RUN: %clang_cc1 -x ast -ast-print %t | FileCheck %s
+
+extern int a1_0[sizeof(long double) == 16 ? 1 : -1];
+extern int a1_i[__alignof(long double) == 16 ? 1 : -1];
+
+// Verify that long double is 128 bit IEEEquad
+
+long double foo = 1.0E4000L;
+// CHECK: long double foo = 1.00000000000000000000000000000000004E+4000L;