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The previous codegen for the slow path (when values are in VFP / NEON registers) was incorrect if the source is NaN. The new codegen uses NEON vbsl instruction to copy the sign bit. e.g. vmov.i32 d1, #0x80000000 vbsl d1, d2, d0 If NEON is not available, it uses integer instructions to copy the sign bit. rdar://9034702 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126295 91177308-0d34-0410-b5e6-96231b3b80d8 |
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