1 files changed, 177 insertions, 0 deletions
diff --git a/test/CodeGen/regparm-struct.c b/test/CodeGen/regparm-struct.c
new file mode 100644
index 0000000..b319012
--- /dev/null
+++ b/test/CodeGen/regparm-struct.c
@@ -0,0 +1,177 @@
+// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s
+
+__attribute__((regparm(3))) void f1(int a, int b, int c, int d);
+// CHECK: declare void @f1(i32 inreg, i32 inreg, i32 inreg, i32)
+void g1() {
+  f1(41, 42, 43, 44);
+}
+
+struct s1 {
+  int x1;
+};
+__attribute__((regparm(3))) void f2(int a, int b, struct s1 c, int d);
+// CHECK: declare void @f2(i32 inreg, i32 inreg, i32 inreg, i32)
+void g2() {
+  struct s1 x = {43};
+  f2(41, 42, x, 44);
+}
+
+struct s2 {
+  int x1;
+  int x2;
+};
+__attribute__((regparm(3))) void f3(int a, int b, struct s2 c, int d);
+// CHECK: declare void @f3(i32 inreg, i32 inreg, i32, i32, i32)
+void g3() {
+  struct s2 x = {43, 44};
+  f3(41, 42, x, 45);
+}
+__attribute__((regparm(3))) void f4(int a, struct s2 b, int c);
+// CHECK: declare void @f4(i32 inreg, i32 inreg, i32 inreg, i32)
+void g4() {
+  struct s2 x = {42, 43};
+  f4(41, x, 44);
+}
+
+struct s3 {
+  int x1;
+  int x2;
+  int x3;
+};
+__attribute__((regparm(3))) void f5(int a, struct s3 b, int c);
+// CHECK: declare void @f5(i32 inreg, i32, i32, i32, i32)
+void g5() {
+  struct s3 x = {42, 43, 44};
+  f5(41, x, 45);
+}
+__attribute__((regparm(3))) void f6(struct s3 a, int b);
+// CHECK: declare void @f6(i32 inreg, i32 inreg, i32 inreg, i32)
+void g6() {
+  struct s3 x = {41, 42, 43};
+  f6(x, 44);
+}
+
+struct s4 {
+  int x1;
+  int x2;
+  int x3;
+  int x4;
+};
+__attribute__((regparm(3))) void f7(struct s4 a, int b);
+// CHECK: declare void @f7(i32, i32, i32, i32, i32)
+void g7() {
+  struct s4 x = {41, 42, 43, 44};
+  f7(x, 45);
+}
+
+__attribute__((regparm(3))) void f8(float a, int b);
+// CHECK: declare void @f8(float, i32 inreg)
+void g8(void) {
+  f8(41, 42);
+}
+
+struct s5 {
+  float x1;
+};
+__attribute__((regparm(3))) void f9(struct s5 a, int b);
+// CHECK: declare void @f9(float, i32 inreg)
+void g9(void) {
+  struct s5 x = {41};
+  f9(x, 42);
+}
+
+struct s6 {
+  float x1;
+  int x2;
+};
+__attribute__((regparm(3))) void f10(struct s6 a, int b);
+// CHECK: declare void @f10(i32 inreg, i32 inreg, i32 inreg)
+void g10(void) {
+  struct s6 x = {41, 42};
+  f10(x, 43);
+}
+
+struct s7 {
+  float x1;
+  int x2;
+  float x3;
+};
+__attribute__((regparm(3))) void f11(struct s7 a, int b);
+// CHECK: declare void @f11(i32 inreg, i32 inreg, i32 inreg, i32)
+void g11(void) {
+  struct s7 x = {41, 42, 43};
+  f11(x, 44);
+}
+
+struct s8 {
+  float x1;
+  float x2;
+};
+__attribute__((regparm(3))) void f12(struct s8 a, int b);
+// CHECK: declare void @f12(i32 inreg, i32 inreg, i32 inreg)
+void g12(void) {
+  struct s8 x = {41, 42};
+  f12(x, 43);
+}
+
+struct s9 {
+  float x1;
+  float x2;
+  float x3;
+};
+__attribute__((regparm(3))) void f13(struct s9 a, int b);
+// CHECK: declare void @f13(i32 inreg, i32 inreg, i32 inreg, i32)
+void g13(void) {
+  struct s9 x = {41, 42, 43};
+  f13(x, 44);
+}
+
+struct s10 {
+  double x1;
+};
+__attribute__((regparm(3))) void f14(struct s10 a, int b, int c);
+// CHECK: declare void @f14(double, i32 inreg, i32 inreg)
+void g14(void) {
+  struct s10 x = { 41 };
+  f14(x, 42, 43);
+}
+
+struct s11 {
+  double x1;
+  double x2;
+};
+__attribute__((regparm(3))) void f15(struct s11 a, int b);
+// CHECK: declare void @f15(double, double, i32)
+void g15(void) {
+  struct s11 x = { 41, 42 };
+  f15(x, 43);
+}
+
+struct s12 {
+  double x1;
+  float x2;
+};
+__attribute__((regparm(3))) void f16(struct s12 a, int b);
+// CHECK: declare void @f16(i32 inreg, i32 inreg, i32 inreg, i32)
+void g16(void) {
+  struct s12 x = { 41, 42 };
+  f16(x, 43);
+}
+
+__attribute__((regparm(3))) struct s12 f17(int a, int b, int c);
+// CHECK: declare void @f17(%struct.s12* inreg sret, i32 inreg, i32 inreg, i32)
+void g17(void) {
+  f17(41, 42, 43);
+}
+
+struct s13 {
+  struct inner {
+    float x;
+  } y;
+};
+__attribute__((regparm(3))) void f18(struct s13 a, int b, int c, int d);
+// CHECK: declare void @f18(%struct.s13* byval align 4, i32 inreg, i32 inreg, i32 inreg)
+void g18(void) {
+  struct s13 x = {{41}};
+  f18(x, 42, 43, 44);
+}