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4f1d3f2563
Summary: Reading Atmel's AT697E errata document this does not seem like a valid workaround. While the text only mentions SDIV, it says that the ICC flags can be wrong, and those are only generated by SDIVcc. Verification on hardware shows that simply replacing SDIV with SDIVcc does not avoid the bug with negative operands. This reverts r283727. Reviewers: lero_chris, jyknight Reviewed By: jyknight Subscribers: fedor.sergeev, jrtc27, llvm-commits Differential Revision: https://reviews.llvm.org/D45813 llvm-svn: 330397
61 lines
1.9 KiB
TableGen
61 lines
1.9 KiB
TableGen
//===-- LeonFeatures.td - Describe the Leon Features -------*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// UMAC and SMAC support for LEON3 and LEON4 processors.
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//===----------------------------------------------------------------------===//
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//support to casa instruction; for leon3 subtarget only
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def UMACSMACSupport : SubtargetFeature<
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"hasumacsmac",
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"HasUmacSmac",
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"true",
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"Enable UMAC and SMAC for LEON3 and LEON4 processors"
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>;
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//===----------------------------------------------------------------------===//
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// CASA Support differs between LEON3-FT GR712RC and LEON3-FT UT699
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// We need to have the option to switch this on and off.
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//===----------------------------------------------------------------------===//
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//support to casa instruction; for leon3 subtarget only
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def LeonCASA : SubtargetFeature<
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"hasleoncasa",
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"HasLeonCasa",
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"true",
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"Enable CASA instruction for LEON3 and LEON4 processors"
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>;
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def InsertNOPLoad: SubtargetFeature<
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"insertnopload",
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"InsertNOPLoad",
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"true",
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"LEON3 erratum fix: Insert a NOP instruction after every single-cycle load instruction when the next instruction is another load/store instruction"
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>;
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def DetectRoundChange : SubtargetFeature<
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"detectroundchange",
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"DetectRoundChange",
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"true",
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"LEON3 erratum detection: Detects any rounding mode change "
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"request: use only the round-to-nearest rounding mode"
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>;
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def FixAllFDIVSQRT : SubtargetFeature<
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"fixallfdivsqrt",
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"FixAllFDIVSQRT",
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"true",
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"LEON erratum fix: Fix FDIVS/FDIVD/FSQRTS/FSQRTD instructions with NOPs and floating-point store"
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>;
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