1 files changed, 123 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/fastcc.ll b/test/CodeGen/AArch64/fastcc.ll
new file mode 100644
index 0000000000..8f9b9feb58
--- /dev/null
+++ b/test/CodeGen/AArch64/fastcc.ll
@@ -0,0 +1,123 @@
+; RUN: llc -verify-machineinstrs < %s -march=aarch64 -tailcallopt | FileCheck %s -check-prefix CHECK-TAIL
+; RUN: llc -verify-machineinstrs < %s -march=aarch64 | FileCheck %s
+
+; Without tailcallopt fastcc still means the caller cleans up the
+; stack, so try to make sure this is respected.
+
+define fastcc void @func_stack0() {
+; CHECK: func_stack0:
+; CHECK: sub sp, sp, #48
+
+; CHECK-TAIL: func_stack0:
+; CHECK-TAIL: sub sp, sp, #48
+
+
+  call fastcc void @func_stack8([8 x i32] undef, i32 42)
+; CHECK:  bl func_stack8
+; CHECK-NOT: sub sp, sp,
+
+; CHECK-TAIL: bl func_stack8
+; CHECK-TAIL: sub sp, sp, #16
+
+
+  call fastcc void @func_stack32([8 x i32] undef, i128 0, i128 9)
+; CHECK: bl func_stack32
+; CHECK-NOT: sub sp, sp,
+
+; CHECK-TAIL: bl func_stack32
+; CHECK-TAIL: sub sp, sp, #32
+
+
+  call fastcc void @func_stack0()
+; CHECK: bl func_stack0
+; CHECK-NOT: sub sp, sp
+
+; CHECK-TAIL: bl func_stack0
+; CHECK-TAIL-NOT: sub sp, sp
+
+  ret void
+; CHECK: add sp, sp, #48
+; CHECK-NEXT: ret
+
+; CHECK-TAIL: add sp, sp, #48
+; CHECK-TAIL-NEXT: ret
+
+}
+
+define fastcc void @func_stack8([8 x i32], i32 %stacked) {
+; CHECK: func_stack8:
+; CHECK: sub sp, sp, #48
+
+; CHECK-TAIL: func_stack8:
+; CHECK-TAIL: sub sp, sp, #48
+
+
+  call fastcc void @func_stack8([8 x i32] undef, i32 42)
+; CHECK:  bl func_stack8
+; CHECK-NOT: sub sp, sp,
+
+; CHECK-TAIL: bl func_stack8
+; CHECK-TAIL: sub sp, sp, #16
+
+
+  call fastcc void @func_stack32([8 x i32] undef, i128 0, i128 9)
+; CHECK: bl func_stack32
+; CHECK-NOT: sub sp, sp,
+
+; CHECK-TAIL: bl func_stack32
+; CHECK-TAIL: sub sp, sp, #32
+
+
+  call fastcc void @func_stack0()
+; CHECK: bl func_stack0
+; CHECK-NOT: sub sp, sp
+
+; CHECK-TAIL: bl func_stack0
+; CHECK-TAIL-NOT: sub sp, sp
+
+  ret void
+; CHECK: add sp, sp, #48
+; CHECK-NEXT: ret
+
+; CHECK-TAIL: add sp, sp, #64
+; CHECK-TAIL-NEXT: ret
+}
+
+define fastcc void @func_stack32([8 x i32], i128 %stacked0, i128 %stacked1) {
+; CHECK: func_stack32:
+; CHECK: sub sp, sp, #48
+
+; CHECK-TAIL: func_stack32:
+; CHECK-TAIL: sub sp, sp, #48
+
+
+  call fastcc void @func_stack8([8 x i32] undef, i32 42)
+; CHECK:  bl func_stack8
+; CHECK-NOT: sub sp, sp,
+
+; CHECK-TAIL: bl func_stack8
+; CHECK-TAIL: sub sp, sp, #16
+
+
+  call fastcc void @func_stack32([8 x i32] undef, i128 0, i128 9)
+; CHECK: bl func_stack32
+; CHECK-NOT: sub sp, sp,
+
+; CHECK-TAIL: bl func_stack32
+; CHECK-TAIL: sub sp, sp, #32
+
+
+  call fastcc void @func_stack0()
+; CHECK: bl func_stack0
+; CHECK-NOT: sub sp, sp
+
+; CHECK-TAIL: bl func_stack0
+; CHECK-TAIL-NOT: sub sp, sp
+
+  ret void
+; CHECK: add sp, sp, #48
+; CHECK-NEXT: ret
+
+; CHECK-TAIL: add sp, sp, #80
+; CHECK-TAIL-NEXT: ret
+}