Add some ABI tweaks for i386-pc-win32 triple so that we return structs in an MSVC-compatible way. Patch by Joe Groff.

llvm-svn: 148992

1 files changed, 48 insertions, 0 deletions

diff --git a/clang/test/CodeGen/x86_32-arguments-win32.c b/clang/test/CodeGen/x86_32-arguments-win32.c
new file mode 100644
index 00000000000..f18bb30fa47
--- /dev/null
+++ b/clang/test/CodeGen/x86_32-arguments-win32.c
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -w -triple i386-pc-win32 -emit-llvm -o - %s | FileCheck %s
+
+// CHECK: define i64 @f1_1()
+// CHECK: define void @f1_2(i32 %a0.0, i32 %a0.1)
+struct s1 {
+  int a;
+  int b;
+};
+struct s1 f1_1(void) { while (1) {} }
+void f1_2(struct s1 a0) {}
+
+// CHECK: define i32 @f2_1()
+struct s2 {
+  short a;
+  short b;
+};
+struct s2 f2_1(void) { while (1) {} }
+
+// CHECK: define i16 @f3_1()
+struct s3 {
+  char a;
+  char b;
+};
+struct s3 f3_1(void) { while (1) {} }
+
+// CHECK: define i8 @f4_1()
+struct s4 {
+  char a:4;
+  char b:4;
+};
+struct s4 f4_1(void) { while (1) {} }
+
+// CHECK: define i64 @f5_1()
+// CHECK: define void @f5_2(double %a0.0)
+struct s5 {
+  double a;
+};
+struct s5 f5_1(void) { while (1) {} }
+void f5_2(struct s5 a0) {}
+
+// CHECK: define i32 @f6_1()
+// CHECK: define void @f6_2(float %a0.0)
+struct s6 {
+  float a;
+};
+struct s6 f6_1(void) { while (1) {} }
+void f6_2(struct s6 a0) {}
+