testcase for a regression introduced by the recent cast patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32419 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/IndVarsSimplify/2006-12-10-BitCast.ll b/test/Transforms/IndVarsSimplify/2006-12-10-BitCast.ll
new file mode 100644 (file)
index 0000000..b584539
--- /dev/null
+++ b/test/Transforms/IndVarsSimplify/2006-12-10-BitCast.ll
@@ -0,0 +1,38 @@
+; RUN: llvm-as < %s | opt -indvars -disable-output
+
+target datalayout = "e-p:32:32"
+target endian = little
+target pointersize = 32
+target triple = "i686-apple-darwin8"
+       %struct.vorbis_dsp_state = type { int, %struct.vorbis_info*, float**, float**, int, int, int, int, int, int, int, int, int, long, long, long, long, long, long, sbyte* }
+       %struct.vorbis_info = type { int, int, int, int, int, int, int, sbyte* }
+
+implementation   ; Functions:
+
+void %_ve_envelope_search() {
+entry:
+       br bool false, label %cond_true27, label %bb137
+
+cond_true27:           ; preds = %entry
+       br bool false, label %cond_true52, label %bb80
+
+cond_true52:           ; preds = %cond_true27
+       %tmp152.i = bitcast float 0.000000e+00 to uint          ; <uint> [#uses=1]
+       br label %cond_next182.i
+
+cond_next182.i:                ; preds = %cond_next182.i, %cond_true52
+       %decay.i.0 = phi uint [ %tmp195.i, %cond_next182.i ], [ %tmp152.i, %cond_true52 ]               ; <uint> [#uses=1]
+       %tmp194.i53 = bitcast uint %decay.i.0 to float          ; <float> [#uses=1]
+       %tmp195.i = sub float %tmp194.i53, 8.000000e+00         ; <float> [#uses=1]
+       %tmp195.i = bitcast float %tmp195.i to uint             ; <uint> [#uses=1]
+       br bool false, label %cond_next182.i, label %bb418.i.preheader
+
+bb418.i.preheader:             ; preds = %cond_next182.i
+       ret void
+
+bb80:          ; preds = %cond_true27
+       ret void
+
+bb137:         ; preds = %entry
+       ret void
+}