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Fix the construction of the magic constant for roundToIntegral to be 64-bit safe. Fixes c-torture/execute/990826-0.c

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llvm-svn: 161885
This commit is contained in:
Owen Anderson 2012-08-14 18:51:15 +00:00
parent b5970fe958
commit 0db4c468c5
1 changed files with 2 additions and 2 deletions
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4
lib/Support/APFloat.cpp
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@ -1774,8 +1774,8 @@ APFloat::opStatus APFloat::roundToIntegral(roundingMode rounding_mode) {
// precision of our format, and then subtract it back off again. The choice
// of rounding modes for the addition/subtraction determines the rounding mode
// for our integral rounding as well.
APInt IntegerConstant(NextPowerOf2(semanticsPrecision(*semantics)),
1 << (semanticsPrecision(*semantics)-1));
APInt IntegerConstant(NextPowerOf2(semanticsPrecision(*semantics)), 1);
IntegerConstant <<= semanticsPrecision(*semantics)-1;
APFloat MagicConstant(*semantics);
fs = MagicConstant.convertFromAPInt(IntegerConstant, false,
rmNearestTiesToEven);