Test case for PR1596.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41085 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/2007-08-04-CoalescerAssert.ll b/test/CodeGen/PowerPC/2007-08-04-CoalescerAssert.ll
new file mode 100644 (file)
index 0000000..34df7bb
--- /dev/null
+++ b/test/CodeGen/PowerPC/2007-08-04-CoalescerAssert.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-as < %s | llc -march=ppc64
+; PR1596
+
+       %struct._obstack_chunk = type { i8* }
+       %struct.obstack = type { i8*, %struct._obstack_chunk* (i8*, i64)*, i8*, i8 }
+
+define i32 @_obstack_newchunk(%struct.obstack* %h, i32 %length) {
+entry:
+       br i1 false, label %cond_false, label %cond_true
+
+cond_true:             ; preds = %entry
+       br i1 false, label %cond_true28, label %cond_next30
+
+cond_false:            ; preds = %entry
+       %tmp22 = tail call %struct._obstack_chunk* null( i64 undef )            ; <%struct._obstack_chunk*> [#uses=2]
+       br i1 false, label %cond_true28, label %cond_next30
+
+cond_true28:           ; preds = %cond_false, %cond_true
+       %iftmp.0.043.0 = phi %struct._obstack_chunk* [ null, %cond_true ], [ %tmp22, %cond_false ]              ; <%struct._obstack_chunk*> [#uses=1]
+       tail call void null( )
+       br label %cond_next30
+
+cond_next30:           ; preds = %cond_true28, %cond_false, %cond_true
+       %iftmp.0.043.1 = phi %struct._obstack_chunk* [ %iftmp.0.043.0, %cond_true28 ], [ null, %cond_true ], [ %tmp22, %cond_false ]            ; <%struct._obstack_chunk*> [#uses=1]
+       %tmp41 = getelementptr %struct._obstack_chunk* %iftmp.0.043.1, i32 0, i32 0             ; <i8**> [#uses=1]
+       store i8* null, i8** %tmp41, align 8
+       ret i32 undef
+}