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Function 'ConstantFoldScalarCall' (in ConstantFolding.cpp) works under the wrong assumption that a call to 'convert.from.fp16' returns a value of type 'float'. However, intrinsic 'convert.from.fp16' can be overloaded; for example, we can call 'convert.from.fp16.f64' to convert from half to double; etc. Before this patch, the following example would have triggered an assertion failure in opt (with -constprop): ``` define double @foo() { entry: %0 = call double @llvm.convert.from.fp16.f64(i16 0) ret double %0 } ``` This patch fixes the problem in ConstantFolding.cpp. When folding a call to convert.from.fp16, we perform a different kind of conversion based on the call return type. Added test 'Transform/ConstProp/convert-from-fp16.ll'. Differential Revision: http://reviews.llvm.org/D9771 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237377 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
2002-05-03-DivideByZeroException.ll | ||
2002-05-03-NotOperator.ll | ||
2002-09-03-SetCC-Bools.ll | ||
2003-05-12-DivideError.ll | ||
2005-01-28-SetCCGEP.ll | ||
2006-11-30-vector-cast.ll | ||
2006-12-01-bool-casts.ll | ||
2006-12-01-TruncBoolBug.ll | ||
2007-02-05-BitCast.ll | ||
2007-02-23-sdiv.ll | ||
2007-11-23-cttz.ll | ||
2008-07-07-VectorCompare.ll | ||
2009-06-20-constexpr-zero-lhs.ll | ||
2009-09-01-GEP-Crash.ll | ||
basictest.ll | ||
bitcast.ll | ||
bswap.ll | ||
calls.ll | ||
constant-expr.ll | ||
convert-from-fp16.ll | ||
div-zero.ll | ||
extractvalue.ll | ||
float-to-ptr-cast.ll | ||
InsertElement.ll | ||
insertvalue.ll | ||
loads.ll | ||
logicaltest.ll | ||
overflow-ops.ll | ||
phi.ll | ||
remtest.ll | ||
shift.ll | ||
trunc_vec.ll |