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Diffstat (limited to 'test/Transforms/InstCombine/multi-use-or.ll')
| -rw-r--r-- | test/Transforms/InstCombine/multi-use-or.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/multi-use-or.ll b/test/Transforms/InstCombine/multi-use-or.ll new file mode 100644 index 0000000000000..85a8b34e2f6eb --- /dev/null +++ b/test/Transforms/InstCombine/multi-use-or.ll @@ -0,0 +1,24 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {add double .sx, .sy} +; The 'or' has multiple uses, make sure that this doesn't prevent instcombine +; from propagating the extends to the truncs. + +define double @ScaleObjectAdd(double %sx, double %sy, double %sz) nounwind { +entry: + %sx34 = bitcast double %sx to i64 ; <i64> [#uses=1] + %sx3435 = zext i64 %sx34 to i192 ; <i192> [#uses=1] + %sy22 = bitcast double %sy to i64 ; <i64> [#uses=1] + %sy2223 = zext i64 %sy22 to i192 ; <i192> [#uses=1] + %sy222324 = shl i192 %sy2223, 128 ; <i192> [#uses=1] + %sy222324.ins = or i192 %sx3435, %sy222324 ; <i192> [#uses=1] + + + %a = trunc i192 %sy222324.ins to i64 ; <i64> [#uses=1] + %b = bitcast i64 %a to double ; <double> [#uses=1] + %c = lshr i192 %sy222324.ins, 128 ; <i192> [#uses=1] + %d = trunc i192 %c to i64 ; <i64> [#uses=1] + %e = bitcast i64 %d to double ; <double> [#uses=1] + %f = add double %b, %e + +; ret double %e + ret double %f +} |