1 files changed, 88 insertions, 0 deletions
diff --git a/clang/test/CodeGen/armv7k-abi.c b/clang/test/CodeGen/armv7k-abi.c
new file mode 100644
index 00000000000..93c0f0ca259
--- /dev/null
+++ b/clang/test/CodeGen/armv7k-abi.c
@@ -0,0 +1,88 @@
+// RUN: %clang_cc1 -triple thumbv7k-apple-watchos2.0 -target-abi aapcs16 %s -o - -emit-llvm | FileCheck %s
+
+// Make sure 64 and 128 bit types are naturally aligned by the v7k ABI:
+
+// CHECK: target datalayout = "e-m:o-p:32:32-i64:64-a:0:32-n32-S128"
+
+typedef struct {
+  float arr[4];
+} HFA;
+
+// CHECK: define void @simple_hfa([4 x float] %h.coerce)
+void simple_hfa(HFA h) {}
+
+// CHECK: define %struct.HFA @return_simple_hfa
+HFA return_simple_hfa() {}
+
+typedef struct {
+  double arr[4];
+} BigHFA;
+
+// We don't want any padding type to be included by Clang when using the
+// APCS-VFP ABI, that needs to be handled by LLVM if needed.
+
+// CHECK: void @no_padding(i32 %r0, i32 %r1, i32 %r2, [4 x double] %d0_d3.coerce, [4 x double] %d4_d7.coerce, [4 x double] %sp.coerce, i64 %split)
+void no_padding(int r0, int r1, int r2, BigHFA d0_d3, BigHFA d4_d7, BigHFA sp,
+                long long split) {}
+
+// Structs larger than 16 bytes should be passed indirectly in space allocated
+// by the caller (a pointer to this storage should be what occurs in the arg
+// list).
+
+typedef struct {
+  float x;
+  long long y;
+  double z;
+} BigStruct;
+
+// CHECK: define void @big_struct_indirect(%struct.BigStruct* %b)
+void big_struct_indirect(BigStruct b) {}
+
+// CHECK: define void @return_big_struct_indirect(%struct.BigStruct* noalias sret
+BigStruct return_big_struct_indirect() {}
+
+// Structs smaller than 16 bytes should be passed directly, and coerced to
+// either [N x i32] or [N x i64] depending on alignment requirements.
+
+typedef struct {
+  float x;
+  int y;
+  double z;
+} SmallStruct;
+
+// CHECK: define void @small_struct_direct([2 x i64] %s.coerce)
+void small_struct_direct(SmallStruct s) {}
+
+// CHECK: define [4 x i32] @return_small_struct_direct()
+SmallStruct return_small_struct_direct() {}
+
+typedef struct {
+  float x;
+  int y;
+  int z;
+} SmallStructSmallAlign;
+
+// CHECK: define void @small_struct_align_direct([3 x i32] %s.coerce)
+void small_struct_align_direct(SmallStructSmallAlign s) {}
+
+typedef struct {
+  char x;
+  short y;
+} PaddedSmallStruct;
+
+// CHECK: define i32 @return_padded_small_struct()
+PaddedSmallStruct return_padded_small_struct() {}
+
+typedef struct {
+  char arr[7];
+} OddlySizedStruct;
+
+// CHECK: define [2 x i32] @return_oddly_sized_struct()
+OddlySizedStruct return_oddly_sized_struct() {}
+
+// CHECK: define double @test_va_arg(i8* %l)
+// CHECK:   load double, double*
+double test_va_arg(__builtin_va_list l) {
+  return __builtin_va_arg(l, double);
+}
+