diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp index 4a6202e7836..3a046655d5e 100644 --- a/lib/Transforms/Scalar/LoopIndexSplit.cpp +++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp @@ -332,7 +332,9 @@ void LoopIndexSplit::findLoopConditionals() { if (CI->getPredicate() == ICmpInst::ICMP_SGT || CI->getPredicate() == ICmpInst::ICMP_UGT || CI->getPredicate() == ICmpInst::ICMP_SGE - || CI->getPredicate() == ICmpInst::ICMP_UGE) + || CI->getPredicate() == ICmpInst::ICMP_UGE + || CI->getPredicate() == ICmpInst::ICMP_EQ + || CI->getPredicate() == ICmpInst::ICMP_NE) return; ExitCondition = CI; diff --git a/test/Transforms/LoopIndexSplit/ExitCondition-2007-09-10.ll b/test/Transforms/LoopIndexSplit/ExitCondition-2007-09-10.ll new file mode 100644 index 00000000000..9e79f483d9f --- /dev/null +++ b/test/Transforms/LoopIndexSplit/ExitCondition-2007-09-10.ll @@ -0,0 +1,50 @@ +; RUN: llvm-as < %s | opt -loop-index-split -disable-output + +@k = external global i32 ; [#uses=2] + +define void @foobar(i32 %a, i32 %b) { +entry: + br label %bb + +bb: ; preds = %cond_next16, %entry + %i.01.0 = phi i32 [ 0, %entry ], [ %tmp18, %cond_next16 ] ; [#uses=5] + %tsum.18.0 = phi i32 [ 42, %entry ], [ %tsum.013.1, %cond_next16 ] ; [#uses=3] + %tmp1 = icmp slt i32 %i.01.0, 50 ; [#uses=1] + br i1 %tmp1, label %cond_true, label %cond_false + +cond_true: ; preds = %bb + %tmp4 = tail call i32 @foo( i32 %i.01.0 ) ; [#uses=1] + %tmp6 = add i32 %tmp4, %tsum.18.0 ; [#uses=2] + %tmp914 = load i32* @k, align 4 ; [#uses=1] + %tmp1015 = icmp eq i32 %tmp914, 0 ; [#uses=1] + br i1 %tmp1015, label %cond_next16, label %cond_true13 + +cond_false: ; preds = %bb + %tmp8 = tail call i32 @bar( i32 %i.01.0 ) ; [#uses=0] + %tmp9 = load i32* @k, align 4 ; [#uses=1] + %tmp10 = icmp eq i32 %tmp9, 0 ; [#uses=1] + br i1 %tmp10, label %cond_next16, label %cond_true13 + +cond_true13: ; preds = %cond_false, %cond_true + %tsum.013.0 = phi i32 [ %tmp6, %cond_true ], [ %tsum.18.0, %cond_false ] ; [#uses=1] + %tmp15 = tail call i32 @bar( i32 %i.01.0 ) ; [#uses=0] + br label %cond_next16 + +cond_next16: ; preds = %cond_false, %cond_true, %cond_true13 + %tsum.013.1 = phi i32 [ %tsum.013.0, %cond_true13 ], [ %tmp6, %cond_true ], [ %tsum.18.0, %cond_false ] ; [#uses=2] + %tmp18 = add i32 %i.01.0, 1 ; [#uses=3] + %tmp21 = icmp eq i32 %tmp18, 100 ; [#uses=1] + br i1 %tmp21, label %bb, label %bb24 + +bb24: ; preds = %cond_next16 + %tmp18.lcssa = phi i32 [ %tmp18, %cond_next16 ] ; [#uses=1] + %tsum.013.1.lcssa = phi i32 [ %tsum.013.1, %cond_next16 ] ; [#uses=1] + %tmp27 = tail call i32 @t( i32 %tmp18.lcssa, i32 %tsum.013.1.lcssa ) ; [#uses=0] + ret void +} + +declare i32 @foo(i32) + +declare i32 @bar(i32) + +declare i32 @t(i32, i32)