diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/dce-iterate.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/dce-iterate.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/dce-iterate.ll b/llvm/test/Transforms/InstCombine/dce-iterate.ll new file mode 100644 index 00000000000..1dd45225410 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/dce-iterate.ll @@ -0,0 +1,24 @@ +; RUN: opt < %s -instcombine -S | grep "ret double .sy" + +define internal double @ScaleObjectAdd(double %sx, double %sy, double %sz) nounwind { +entry: + %sx34 = bitcast double %sx to i64 ; <i64> [#uses=1] + %sx3435 = zext i64 %sx34 to i960 ; <i960> [#uses=1] + %sy22 = bitcast double %sy to i64 ; <i64> [#uses=1] + %sy2223 = zext i64 %sy22 to i960 ; <i960> [#uses=1] + %sy222324 = shl i960 %sy2223, 320 ; <i960> [#uses=1] + %sy222324.ins = or i960 %sx3435, %sy222324 ; <i960> [#uses=1] + %sz10 = bitcast double %sz to i64 ; <i64> [#uses=1] + %sz1011 = zext i64 %sz10 to i960 ; <i960> [#uses=1] + %sz101112 = shl i960 %sz1011, 640 ; <i960> [#uses=1] + %sz101112.ins = or i960 %sy222324.ins, %sz101112 + + %a = trunc i960 %sz101112.ins to i64 ; <i64> [#uses=1] + %b = bitcast i64 %a to double ; <double> [#uses=1] + %c = lshr i960 %sz101112.ins, 320 ; <i960> [#uses=1] + %d = trunc i960 %c to i64 ; <i64> [#uses=1] + %e = bitcast i64 %d to double ; <double> [#uses=1] + %f = fadd double %b, %e + + ret double %e +} |
