new testcase for PR515

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20223 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/IndVarsSimplify/2005-02-17-TruncateExprCrash.ll b/test/Transforms/IndVarsSimplify/2005-02-17-TruncateExprCrash.ll
new file mode 100644 (file)
index 0000000..36987ca
--- /dev/null
+++ b/test/Transforms/IndVarsSimplify/2005-02-17-TruncateExprCrash.ll
@@ -0,0 +1,63 @@
+; RUN: llvm-as < %s | opt -indvars -disable-output
+
+implementation   ; Functions:
+
+declare void %q_atomic_increment()
+
+declare void %_Z9qt_assertPKcS0_i()
+
+void %_ZN13QMetaResourceC1EPKh() {
+entry:
+       invoke void %_Z9qt_assertPKcS0_i( )
+                       to label %endif.1 unwind label %then.i.i551
+
+then.i.i551:           ; preds = %entry
+       ret void
+
+endif.1:               ; preds = %entry
+       br bool false, label %then.2, label %then.i.i
+
+then.2:                ; preds = %endif.1
+       invoke void %q_atomic_increment( )
+                       to label %loopentry.0 unwind label %invoke_catch.6
+
+invoke_catch.6:                ; preds = %then.2
+       ret void
+
+loopentry.0:           ; preds = %then.2
+       br bool false, label %shortcirc_next.i, label %endif.3
+
+endif.3:               ; preds = %loopentry.0
+       ret void
+
+shortcirc_next.i:              ; preds = %loopentry.0
+       br bool false, label %_ZNK7QString2atEi.exit, label %then.i
+
+then.i:                ; preds = %shortcirc_next.i
+       ret void
+
+_ZNK7QString2atEi.exit:                ; preds = %shortcirc_next.i
+       br bool false, label %endif.4, label %then.4
+
+then.4:                ; preds = %_ZNK7QString2atEi.exit
+       ret void
+
+endif.4:               ; preds = %_ZNK7QString2atEi.exit
+       %tmp.115 = load ubyte* null             ; <ubyte> [#uses=1]
+       br bool false, label %loopexit.1, label %no_exit.0
+
+no_exit.0:             ; preds = %no_exit.0, %endif.4
+       %bytes_in_len.4.5 = phi ubyte [ %dec, %no_exit.0 ], [ %tmp.115, %endif.4 ]              ; <ubyte> [#uses=1]
+       %off.5.5.in = phi int [ %off.5.5, %no_exit.0 ], [ 0, %endif.4 ]         ; <int> [#uses=1]
+       %off.5.5 = add int %off.5.5.in, 1               ; <int> [#uses=2]
+       %dec = add ubyte %bytes_in_len.4.5, 255         ; <ubyte> [#uses=2]
+       %tmp.123631 = seteq ubyte %dec, 0               ; <bool> [#uses=1]
+       br bool %tmp.123631, label %loopexit.1, label %no_exit.0
+
+loopexit.1:            ; preds = %no_exit.0, %endif.4
+       %off.5.in.6 = phi int [ 0, %endif.4 ], [ %off.5.5, %no_exit.0 ]         ; <int> [#uses=0]
+       ret void
+
+then.i.i:              ; preds = %endif.1
+       ret void
+}