1 files changed, 20 insertions, 0 deletions
diff --git a/test/CodeGen/ARM64/stacksave.ll b/test/CodeGen/ARM64/stacksave.ll
new file mode 100644
index 0000000..a79e99b
--- /dev/null
+++ b/test/CodeGen/ARM64/stacksave.ll
@@ -0,0 +1,20 @@
+; RUN: llc < %s -verify-coalescing
+; <rdar://problem/11522048>
+target triple = "arm64-apple-macosx10.8.0"
+
+; Verify that we can handle spilling the stack pointer without attempting
+; spilling it directly.
+; CHECK: f
+; CHECK: mov [[X0:x[0-9]+]], sp
+; CHECK: str [[X0]]
+; CHECK: inlineasm
+define void @f() nounwind ssp {
+entry:
+  %savedstack = call i8* @llvm.stacksave() nounwind
+  call void asm sideeffect "; inlineasm", "~{x0},~{x1},~{x2},~{x3},~{x4},~{x5},~{x6},~{x7},~{x8},~{x9},~{x10},~{x11},~{x12},~{x13},~{x14},~{x15},~{x16},~{x17},~{x18},~{x19},~{x20},~{x21},~{x22},~{x23},~{x24},~{x25},~{x26},~{x27},~{x28},~{fp},~{lr},~{sp},~{memory}"() nounwind
+  call void @llvm.stackrestore(i8* %savedstack) nounwind
+  ret void
+}
+
+declare i8* @llvm.stacksave() nounwind
+declare void @llvm.stackrestore(i8*) nounwind