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Diffstat (limited to 'test/Transforms/InstCombine/setcc-cast-cast.ll')
| -rw-r--r-- | test/Transforms/InstCombine/setcc-cast-cast.ll | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/setcc-cast-cast.ll b/test/Transforms/InstCombine/setcc-cast-cast.ll new file mode 100644 index 0000000..e311c52 --- /dev/null +++ b/test/Transforms/InstCombine/setcc-cast-cast.ll @@ -0,0 +1,42 @@ +; This test case was reduced from MultiSource/Applications/hbd. It makes sure +; that folding doesn't happen in case a zext is applied where a sext should have +; been when a setcc is used with two casts. +; RUN: llvm-as < %s | llc -instcombine | llvm-dis | not grep 'br bool false' +int %bug(ubyte %inbuff) { +entry: + %tmp = bitcast ubyte %inbuff to sbyte ; <sbyte> [#uses=1] + %tmp = sext sbyte %tmp to int ; <int> [#uses=3] + %tmp = seteq int %tmp, 1 ; <bool> [#uses=1] + br bool %tmp, label %cond_true, label %cond_next + +cond_true: ; preds = %entry + br label %bb + +cond_next: ; preds = %entry + %tmp3 = seteq int %tmp, -1 ; <bool> [#uses=1] + br bool %tmp3, label %cond_true4, label %cond_next5 + +cond_true4: ; preds = %cond_next + br label %bb + +cond_next5: ; preds = %cond_next + %tmp7 = setgt int %tmp, 1 ; <bool> [#uses=1] + br bool %tmp7, label %cond_true8, label %cond_false + +cond_true8: ; preds = %cond_next5 + br label %cond_next9 + +cond_false: ; preds = %cond_next5 + br label %cond_next9 + +cond_next9: ; preds = %cond_false, %cond_true8 + %iftmp.1.0 = phi int [ 42, %cond_true8 ], [ 23, %cond_false ] ; <int> [#uses=1] + br label %return + +bb: ; preds = %cond_true4, %cond_true + br label %return + +return: ; preds = %bb, %cond_next9 + %retval.0 = phi int [ 17, %bb ], [ %iftmp.1.0, %cond_next9 ] ; <int> [#uses=1] + ret int %retval.0 +} |