1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/X86/extract-extract.ll b/test/CodeGen/X86/extract-extract.ll
new file mode 100644
index 0000000..ad79ab9
--- /dev/null
+++ b/test/CodeGen/X86/extract-extract.ll
@@ -0,0 +1,24 @@
+; RUN: llc < %s -march=x86 >/dev/null
+; PR4699
+
+; Handle this extractvalue-of-extractvalue case without getting in
+; trouble with CSE in DAGCombine.
+
+        %cc = type { %crd }
+        %cr = type { i32 }
+        %crd = type { i64, %cr* }
+        %pp = type { %cc }
+
+define fastcc void @foo(%pp* nocapture byval %p_arg) {
+entry:
+        %tmp2 = getelementptr %pp* %p_arg, i64 0, i32 0         ; <%cc*> [#uses=
+        %tmp3 = load %cc* %tmp2         ; <%cc> [#uses=1]
+        %tmp34 = extractvalue %cc %tmp3, 0              ; <%crd> [#uses=1]
+        %tmp345 = extractvalue %crd %tmp34, 0           ; <i64> [#uses=1]
+        %.ptr.i = load %cr** undef              ; <%cr*> [#uses=0]
+        %tmp15.i = shl i64 %tmp345, 3           ; <i64> [#uses=0]
+        store %cr* undef, %cr** undef
+        ret void
+}
+
+