Add the clang library to the repo (with some of my changes, too).

1 files changed, 183 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/x86_64-arguments.cpp b/clang/test/CodeGenCXX/x86_64-arguments.cpp
new file mode 100644
index 0000000..6721803
--- /dev/null
+++ b/clang/test/CodeGenCXX/x86_64-arguments.cpp
@@ -0,0 +1,183 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+// Basic base class test.
+struct f0_s0 { unsigned a; };
+struct f0_s1 : public f0_s0 { void *b; };
+// CHECK: define void @_Z2f05f0_s1(i32 %a0.coerce0, i8* %a0.coerce1)
+void f0(f0_s1 a0) { }
+
+// Check with two eight-bytes in base class.
+struct f1_s0 { unsigned a; unsigned b; float c; };
+struct f1_s1 : public f1_s0 { float d;};
+// CHECK: define void @_Z2f15f1_s1(i64 %a0.coerce0, <2 x float> %a0.coerce1)
+void f1(f1_s1 a0) { }
+
+// Check with two eight-bytes in base class and merge.
+struct f2_s0 { unsigned a; unsigned b; float c; };
+struct f2_s1 : public f2_s0 { char d;};
+// CHECK: define void @_Z2f25f2_s1(i64 %a0.coerce0, i64 %a0.coerce1)
+void f2(f2_s1 a0) { }
+
+// PR5831
+// CHECK: define void @_Z2f34s3_1(i64 %x.coerce)
+struct s3_0 {};
+struct s3_1 { struct s3_0 a; long b; };
+void f3(struct s3_1 x) {}
+
+// CHECK: define i64 @_Z4f4_0M2s4i(i64 %a)
+// CHECK: define {{.*}} @_Z4f4_1M2s4FivE(i64 %a.coerce0, i64 %a.coerce1)
+struct s4 {};
+typedef int s4::* s4_mdp;
+typedef int (s4::*s4_mfp)();
+s4_mdp f4_0(s4_mdp a) { return a; }
+s4_mfp f4_1(s4_mfp a) { return a; }
+
+
+namespace PR7523 {
+struct StringRef {
+  char *a;
+};
+
+void AddKeyword(StringRef, int x);
+
+void foo() {
+  // CHECK: define void @_ZN6PR75233fooEv()
+  // CHECK: call void @_ZN6PR752310AddKeywordENS_9StringRefEi(i8* {{.*}}, i32 4)
+  AddKeyword(StringRef(), 4);
+}
+}
+
+namespace PR7742 { // Also rdar://8250764
+  struct s2 {
+    float a[2];
+  };
+  
+  struct c2 : public s2 {};
+  
+  // CHECK: define <2 x float> @_ZN6PR77423fooEPNS_2c2E(%"struct.PR7742::c2"* %P)
+  c2 foo(c2 *P) {
+    return c2();
+  }
+  
+}
+
+namespace PR5179 {
+  struct B {};
+
+  struct B1 : B {
+    int* pa;
+  };
+
+  struct B2 : B {
+    B1 b1;
+  };
+
+  // CHECK: define i8* @_ZN6PR51793barENS_2B2E(i32* %b2.coerce)
+  const void *bar(B2 b2) {
+    return b2.b1.pa;
+  }
+}
+
+namespace test5 {
+  struct Xbase { };
+  struct Empty { };
+  struct Y;
+  struct X : public Xbase {
+    Empty empty;
+    Y f();
+  };
+  struct Y : public X { 
+    Empty empty;
+  };
+  X getX();
+  int takeY(const Y&, int y);
+  void g() {
+    // rdar://8340348 - The temporary for the X object needs to have a defined
+    // address when passed into X::f as 'this'.
+    takeY(getX().f(), 42);
+  }
+  // CHECK: void @_ZN5test51gEv()
+  // CHECK: alloca %"struct.test5::Y"
+  // CHECK: alloca %"struct.test5::X"
+  // CHECK: alloca %"struct.test5::Y"
+}
+
+
+// rdar://8360877
+namespace test6 {
+  struct outer {
+    int x;
+    struct epsilon_matcher {} e;
+    int f;
+  };
+
+  int test(outer x) {
+    return x.x + x.f;
+  }
+  // CHECK: define i32 @_ZN5test64testENS_5outerE(i64 %x.coerce0, i32 %x.coerce1)
+}
+
+namespace test7 {
+  struct StringRef {char* ptr; long len; };
+  class A { public: ~A(); };
+  A x(A, A, long, long, StringRef) { return A(); }
+  // Check that the StringRef is passed byval instead of expanded
+  // (which would split it between registers and memory).
+  // rdar://problem/9686430
+  // CHECK: define void @_ZN5test71xENS_1AES0_llNS_9StringRefE({{.*}} byval align 8)
+
+  // And a couple extra related tests:
+  A y(A, long double, long, long, StringRef) { return A(); }
+  // CHECK: define void @_ZN5test71yENS_1AEellNS_9StringRefE({{.*}} i8*
+  struct StringDouble {char * ptr; double d;};
+  A z(A, A, A, A, A, StringDouble) { return A(); }
+  A zz(A, A, A, A, StringDouble) { return A(); }
+  // CHECK: define void @_ZN5test71zENS_1AES0_S0_S0_S0_NS_12StringDoubleE({{.*}} byval align 8)
+  // CHECK: define void @_ZN5test72zzENS_1AES0_S0_S0_NS_12StringDoubleE({{.*}} i8*
+}
+
+namespace test8 {
+  // CHECK: declare void @_ZN5test83fooENS_1BE(%"class.test8::B"* byval align 8)
+  class A {
+   char big[17];
+  };
+
+  class B : public A {};
+
+  void foo(B b);
+  void bar() {
+   B b;
+   foo(b);
+  }
+}
+
+// PR4242
+namespace test9 {
+  // Large enough to be passed indirectly.
+  struct S { void *data[3]; };
+
+  struct T { void *data[2]; };
+
+  // CHECK: define void @_ZN5test93fooEPNS_1SEPNS_1TE([[S:%.*]]*, [[T:%.*]]*)
+  void foo(S*, T*) {}
+
+  // CHECK: define void @_ZN5test91aEiiiiNS_1TEPv([[S]]* noalias sret {{%.*}}, i32, i32, i32, i32, [[T]]* byval align 8, i8*)
+  S a(int, int, int, int, T, void*) {
+    return S();
+  }
+
+  // CHECK: define [[S]]* @_ZN5test91bEPNS_1SEiiiiNS_1TEPv([[S]]* {{%.*}}, i32, i32, i32, i32, [[T:%.*]]* byval align 8, i8*)
+  S* b(S* sret, int, int, int, int, T, void*) {
+    return sret;
+  }
+
+  // CHECK: define void @_ZN5test91cEiiiNS_1TEPv([[S]]* noalias sret {{%.*}}, i32, i32, i32, i8* {{%.*}}, i8* {{%.*}}, i8*)
+  S c(int, int, int, T, void*) {
+    return S();
+  }
+
+  // CHECK: define [[S]]* @_ZN5test91dEPNS_1SEiiiNS_1TEPv([[S]]* {{%.*}}, i32, i32, i32, i8* {{%.*}}, i8* {{%.*}}, i8*)
+  S* d(S* sret, int, int, int, T, void*) {
+    return sret;
+  }
+}