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Temporarily revert functionality change from my previous patch;

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it is too aggressive.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57203 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2008-10-06 20:43:48 +00:00
parent 617fddf51c
commit 65609f2efa
1 changed files with 1 additions and 2 deletions
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3
lib/Support/APFloat.cpp
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@ -1727,12 +1727,11 @@ APFloat::convert(const fltSemantics &toSemantics,
APInt::tcShiftLeft(significandParts(), newPartCount, shift);
else if (shift < 0)
APInt::tcShiftRight(significandParts(), newPartCount, -shift);
// If the new size is shorter, we lost information.
fs = (shift < 0) ? opInexact : opOK;
// gcc forces the Quiet bit on, which means (float)(double)(float_sNan)
// does not give you back the same bits. This is dubious, and we
// don't currently do it. You're really supposed to get
// an invalid operation signal at runtime, but nobody does that.
fs = opOK;
} else {
semantics = &toSemantics;
fs = opOK;