A testcase I don't want to break in the future

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22718 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 26 insertions, 0 deletions

diff --git a/test/Transforms/LoopStrengthReduce/different-type-ivs.ll b/test/Transforms/LoopStrengthReduce/different-type-ivs.ll
new file mode 100644
index 0000000000..b8cda5a807
--- /dev/null
+++ b/test/Transforms/LoopStrengthReduce/different-type-ivs.ll
@@ -0,0 +1,26 @@
+; RUN: llvm-as < %s | opt -loop-reduce -disable-output
+; Test to make sure that loop-reduce never crashes on IV's 
+; with different types but identical strides.
+
+void %foo() {
+entry:
+	br label %no_exit
+
+no_exit:		; preds = %no_exit, %entry
+	%indvar = phi uint [ 0, %entry ], [ %indvar.next, %no_exit ]		; <uint> [#uses=3]
+	%indvar = cast uint %indvar to short		; <short> [#uses=1]
+	%X.0.0 = mul short %indvar, 1234		; <short> [#uses=1]
+	%tmp. = mul uint %indvar, 1234		; <uint> [#uses=1]
+	%tmp.5 = cast short %X.0.0 to int		; <int> [#uses=1]
+	%tmp.3 = call int (...)* %bar( int %tmp.5, uint %tmp. )		; <int> [#uses=0]
+	%tmp.0 = call bool %pred( )		; <int> [#uses=1]
+	%indvar.next = add uint %indvar, 1		; <uint> [#uses=1]
+	br bool %tmp.0, label %return, label %no_exit
+
+return:
+	ret void
+}
+
+declare bool %pred()
+
+declare int %bar(...)