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[IR] fptrunc-of-fptrunc isn't an EliminableCastPair.

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Double and single rounding can produce different results.
This is the IR counterpart to r228911.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238531 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ahmed Bougacha
2015-05-29 00:04:30 +00:00
parent 97c5de758a
commit c0d1ce55ac
2 changed files with 9 additions and 1 deletions
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2
lib/IR/Instructions.cpp
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@@ -2120,7 +2120,7 @@ unsigned CastInst::isEliminableCastPair(
{ 0, 0, 0,99,99, 0, 0,99,99,99, 0, 3, 0}, // FPToSI |
{ 99,99,99, 0, 0,99,99, 0, 0,99,99, 4, 0}, // UIToFP +- firstOp
{ 99,99,99, 0, 0,99,99, 0, 0,99,99, 4, 0}, // SIToFP |
{ 99,99,99, 0, 0,99,99, 1, 0,99,99, 4, 0}, // FPTrunc |
{ 99,99,99, 0, 0,99,99, 0, 0,99,99, 4, 0}, // FPTrunc |
{ 99,99,99, 2, 2,99,99,10, 2,99,99, 4, 0}, // FPExt |
{ 1, 0, 0,99,99, 0, 0,99,99,99, 7, 3, 0}, // PtrToInt |
{ 99,99,99,99,99,99,99,99,99,11,99,15, 0}, // IntToPtr |