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-rw-r--r--test/CodeGen/X86/empty-struct-return-type.ll15
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/X86/empty-struct-return-type.ll b/test/CodeGen/X86/empty-struct-return-type.ll
new file mode 100644
index 0000000..34cd5d9
--- /dev/null
+++ b/test/CodeGen/X86/empty-struct-return-type.ll
@@ -0,0 +1,15 @@
+; RUN: llc < %s -march=x86-64 | grep call
+; PR4688
+
+; Return types can be empty structs, which can be awkward.
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @_ZN15QtSharedPointer22internalSafetyCheckAddEPVKv(i8* %ptr) {
+entry:
+ %0 = call { } @_ZNK5QHashIPv15QHashDummyValueE5valueERKS0_(i8** undef) ; <{ }> [#uses=0]
+ ret void
+}
+
+declare hidden { } @_ZNK5QHashIPv15QHashDummyValueE5valueERKS0_(i8** nocapture) nounwind
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