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Temporarily revert functionality change from my previous patch;
it is too aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57203 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1727,12 +1727,11 @@ APFloat::convert(const fltSemantics &toSemantics,
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APInt::tcShiftLeft(significandParts(), newPartCount, shift);
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else if (shift < 0)
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APInt::tcShiftRight(significandParts(), newPartCount, -shift);
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// If the new size is shorter, we lost information.
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fs = (shift < 0) ? opInexact : opOK;
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// gcc forces the Quiet bit on, which means (float)(double)(float_sNan)
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// does not give you back the same bits. This is dubious, and we
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// don't currently do it. You're really supposed to get
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// an invalid operation signal at runtime, but nobody does that.
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fs = opOK;
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} else {
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semantics = &toSemantics;
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fs = opOK;
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