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128-bit software floating point division does not update FP environment for hardware cores #33473

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compnerd opened this issue Aug 8, 2017 · 2 comments
Open

128-bit software floating point division does not update FP environment for hardware cores #33473

compnerd opened this issue Aug 8, 2017 · 2 comments
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bugzilla Issues migrated from bugzilla compiler-rt:builtins

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@compnerd
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compnerd commented Aug 8, 2017

Bugzilla Link 34126
Version unspecified
OS All
CC @arichardson,@fjricci,@vitalybuka

Extended Description

The 128-bit floating point division routines need to update the floating point hardware state when performing operations (e.g. division by NaN). This needs to account for the various architectures in the target agnostic code path (e.g. targeting Cortex M3 could not do this).
@arichardson
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It seems like none of the fp128 routines set FE_INVALID, etc. This causes failures in the math tests of FreeBSD test suite for non-x86 architectures since it means that functions such as cosl/sinl/tanl/ etc. don't set any floating point exception flags.

@arichardson
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https://reviews.llvm.org/D98332

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 10, 2021
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