Properly factor Native Client defines to support NaCl OS on ARM and x86

test/CodeGen/x86_64-arguments-nacl.c

Index: test/CodeGen/x86_64-arguments-nacl.c
diff --git a/test/CodeGen/x86_64-arguments-nacl.c b/test/CodeGen/x86_64-arguments-nacl.c
new file mode 100644
index 0000000000000000000000000000000000000000..d864a7511b023d5bf39ed53a69a0f5a28e46ce0f
--- /dev/null
+++ b/test/CodeGen/x86_64-arguments-nacl.c
@@ -0,0 +1,92 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-nacl -emit-llvm -o - %s| FileCheck %s
+#include <stdarg.h>
+// Test for x86-64 structure representation (instead of pnacl representation),
+// in particular for unions. Also crib a few tests from x86 Linux.
+
+union PP_VarValue {
+  int as_int;
+  double as_double;
+  long long as_i64;
+};
+
+struct PP_Var {
+  int type;
+  int padding;
+  union PP_VarValue value;
+};
+
+// CHECK: define { i64, i64 } @f0()
+struct PP_Var f0() {
+  struct PP_Var result = { 0, 0, 0 };
+  return result;
+}
+
+// CHECK: define void @f1(i64 %p1.coerce0, i64 %p1.coerce1)
+void f1(struct PP_Var p1) { while(1) {} }
+
+// long doubles are 64 bits on NaCl
+// CHECK: define double @f5()
+long double f5(void) {
+  return 0;
+}
+
+// CHECK: define void @f6(i8 signext %a0, i16 signext %a1, i32 %a2, i64 %a3, i8* %a4)
+void f6(char a0, short a1, int a2, long long a3, void *a4) {
+}
+
+// CHECK: define i64 @f8_1()
+// CHECK: define void @f8_2(i64 %a0.coerce)
+union u8 {
+  long double a;
+  int b;
+};
+union u8 f8_1() { while (1) {} }
+void f8_2(union u8 a0) {}
+
+// CHECK: define i64 @f9()
+struct s9 { int a; int b; int : 0; } f9(void) { while (1) {} }
+
+// CHECK: define void @f10(i64 %a0.coerce)
+struct s10 { int a; int b; int : 0; };
+void f10(struct s10 a0) {}
+
+// CHECK: define double @f11()
+union { long double a; float b; } f11() { while (1) {} }
+
+// CHECK: define i32 @f12_0()
+// CHECK: define void @f12_1(i32 %a0.coerce)
+struct s12 { int a __attribute__((aligned(16))); };
+struct s12 f12_0(void) { while (1) {} }
+void f12_1(struct s12 a0) {}
+
+// Check that sret parameter is accounted for when checking available integer
+// registers.
+// CHECK: define void @f13(%struct.s13_0* noalias sret %agg.result, i32 %a, i32 %b, i32 %c, i32 %d, {{.*}}* byval align 8 %e, i32 %f)
+
+struct s13_0 { long long f0[3]; };
+struct s13_1 { long long f0[2]; };
+struct s13_0 f13(int a, int b, int c, int d,
+                 struct s13_1 e, int f) { while (1) {} }
+
+// CHECK: define void @f20(%struct.s20* byval align 32 %x)
+struct __attribute__((aligned(32))) s20 {
+  int x;
+  int y;
+};
+void f20(struct s20 x) {}
+
+
+// CHECK: declare void @func(i64)
+typedef struct _str {
+  union {
+    long double a;
+    long c;
+  };
+} str;
+
+void func(str s);
+str ss;
+void f9122143()
+{
+  func(ss);
+}