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comparison test/Transforms/InstCombine/dce-iterate.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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-1:000000000000 0:95c75e76d11b
1 ; RUN: opt < %s -instcombine -S | grep "ret double .sy"
2
3 define internal double @ScaleObjectAdd(double %sx, double %sy, double %sz) nounwind {
4 entry:
5 %sx34 = bitcast double %sx to i64 ; <i64> [#uses=1]
6 %sx3435 = zext i64 %sx34 to i960 ; <i960> [#uses=1]
7 %sy22 = bitcast double %sy to i64 ; <i64> [#uses=1]
8 %sy2223 = zext i64 %sy22 to i960 ; <i960> [#uses=1]
9 %sy222324 = shl i960 %sy2223, 320 ; <i960> [#uses=1]
10 %sy222324.ins = or i960 %sx3435, %sy222324 ; <i960> [#uses=1]
11 %sz10 = bitcast double %sz to i64 ; <i64> [#uses=1]
12 %sz1011 = zext i64 %sz10 to i960 ; <i960> [#uses=1]
13 %sz101112 = shl i960 %sz1011, 640 ; <i960> [#uses=1]
14 %sz101112.ins = or i960 %sy222324.ins, %sz101112
15
16 %a = trunc i960 %sz101112.ins to i64 ; <i64> [#uses=1]
17 %b = bitcast i64 %a to double ; <double> [#uses=1]
18 %c = lshr i960 %sz101112.ins, 320 ; <i960> [#uses=1]
19 %d = trunc i960 %c to i64 ; <i64> [#uses=1]
20 %e = bitcast i64 %d to double ; <double> [#uses=1]
21 %f = fadd double %b, %e
22
23 ret double %e
24 }