Target/X86: Tweak win64's tailcall.

[oota-llvm.git] / test / CodeGen / X86 / tailcall-ri64.ll

diff --git a/test/CodeGen/X86/tailcall-ri64.ll b/test/CodeGen/X86/tailcall-ri64.ll
new file mode 100644 (file)
index 0000000..914d8f7
--- /dev/null
+++ b/test/CodeGen/X86/tailcall-ri64.ll
@@ -0,0 +1,24 @@
+; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=AMD64
+; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s -check-prefix=WIN64
+; PR8743
+; TAILJMPri64 should not receive "callee-saved" registers beyond epilogue.
+
+; AMD64: jmpq
+; AMD64-NOT: %{{e[a-z]|rbx|rbp|r10|r12|r13|r14|r15}}
+
+; WIN64: jmpq
+; WIN64-NOT: %{{e[a-z]|rbx|rsi|rdi|rbp|r12|r13|r14|r15}}
+
+%class = type { [8 x i8] }
+%vt = type { i32 (...)** }
+
+define %vt* @_ZN4llvm9UnsetInit20convertInitializerToEPNS_5RecTyE(%class*
+%this, %vt* %Ty) align 2 {
+entry:
+  %0 = bitcast %vt* %Ty to %vt* (%vt*, %class*)***
+  %vtable = load %vt* (%vt*, %class*)*** %0, align 8
+  %vfn = getelementptr inbounds %vt* (%vt*, %class*)** %vtable, i64 4
+  %1 = load %vt* (%vt*, %class*)** %vfn, align 8
+  %call = tail call %vt* %1(%vt* %Ty, %class* %this)
+  ret %vt* %call
+}