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| author | Alexander Ivchenko <alexander.ivchenko@intel.com> | 2018-04-24 12:57:51 +0000 |
|---|---|---|
| committer | Alexander Ivchenko <alexander.ivchenko@intel.com> | 2018-04-24 12:57:51 +0000 |
| commit | 5717fbaf4c4c259ffe058e4e2d2c89a1b501b3e0 (patch) | |
| tree | 6c64e66fb17d17540b8a2cd2aea6a9c1f6de4af6 /llvm/lib/Object/COFFObjectFile.cpp | |
| parent | 7054b49e0193de6557676319fb1af9b59cc6b333 (diff) | |
| download | llvm-5717fbaf4c4c259ffe058e4e2d2c89a1b501b3e0.zip llvm-5717fbaf4c4c259ffe058e4e2d2c89a1b501b3e0.tar.gz llvm-5717fbaf4c4c259ffe058e4e2d2c89a1b501b3e0.tar.bz2 | |
[X86] Replace action Promote with Expand for operation ISD::SINT_TO_FP
Summary:
If attribute "use-soft-float"="true" is set then X86ISelLowering.cpp sets
'Promote' action for ISD::SINT_TO_FP operation on type i32.
But 'Promote' action is not proper in this case since lib function
__floatsidf is available for casting from signed int to float type.
Thus Expand action is more suitable here.
The Expand action should be set for ISD::UINT_TO_FP for soft float as well.
If function attribute "use-soft-float"="true" is set then infinite looping
can happen in DAG combining, function visitSINT_TO_FP() replaces SINT_TO_FP
node with UINT_TO_FP node and function combineUIntToFP() replace vice versa in cycle.
The fix prevents it.
Patch by vrybalov
Differential Revision: https://reviews.llvm.org/D45572
llvm-svn: 330711
Diffstat (limited to 'llvm/lib/Object/COFFObjectFile.cpp')
0 files changed, 0 insertions, 0 deletions