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annotate test/CodeGen/X86/2009-01-16-UIntToFP.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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children 803732b1fca8
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc < %s -march=x86
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2 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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3 target triple = "i386-apple-darwin8"
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4
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5 define hidden float @__floatundisf(i64 %u) nounwind readnone {
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6 entry:
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7 %0 = icmp ugt i64 %u, 9007199254740991 ; <i1> [#uses=1]
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8 br i1 %0, label %bb, label %bb2
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9
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10 bb: ; preds = %entry
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11 %1 = and i64 %u, 2047 ; <i64> [#uses=1]
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12 %2 = icmp eq i64 %1, 0 ; <i1> [#uses=1]
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13 br i1 %2, label %bb2, label %bb1
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14
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15 bb1: ; preds = %bb
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16 %3 = or i64 %u, 2048 ; <i64> [#uses=1]
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17 %4 = and i64 %3, -2048 ; <i64> [#uses=1]
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18 br label %bb2
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19
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20 bb2: ; preds = %bb1, %bb, %entry
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21 %u_addr.0 = phi i64 [ %4, %bb1 ], [ %u, %entry ], [ %u, %bb ] ; <i64> [#uses=2]
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22 %5 = lshr i64 %u_addr.0, 32 ; <i64> [#uses=1]
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23 %6 = trunc i64 %5 to i32 ; <i32> [#uses=1]
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24 %7 = uitofp i32 %6 to double ; <double> [#uses=1]
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25 %8 = fmul double %7, 0x41F0000000000000 ; <double> [#uses=1]
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26 %9 = trunc i64 %u_addr.0 to i32 ; <i32> [#uses=1]
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27 %10 = uitofp i32 %9 to double ; <double> [#uses=1]
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28 %11 = fadd double %10, %8 ; <double> [#uses=1]
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29 %12 = fptrunc double %11 to float ; <float> [#uses=1]
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30 ret float %12
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31 }