bcm5719-llvm/llvm/test/CodeGen/Mips, branch meklort-10.0.1

[MIPS] Don't emit R_(MICRO)MIPS_JALR relocations against data symbols

2020-01-13T14:14:03+00:00

The R_(MICRO)MIPS_JALR optimization only works when used against functions. Using the relocation against a data symbol (e.g. function pointer) will cause some linkers that don't ignore the hint in this case (e.g. LLD prior to commit 5bab291b7b) to generate a relative branch to the data symbol which crashes at run time. Before this patch, LLVM was erroneously emitting these relocations against local-dynamic TLS function pointers and global function pointers with internal visibility. Reviewers: atanasyan, jrtc27, vstefanovic Reviewed By: atanasyan Differential Revision: https://reviews.llvm.org/D72571

[SelectionDAG] ComputeKnownBits - minimum leading/trailing zero bits in LSHR/SHL (PR44526)

2020-01-13T11:08:12+00:00

As detailed in https://blog.regehr.org/archives/1709 we don't make use of the known leading/trailing zeros for shifted values in cases where we don't know the shift amount value. This patch adds support to SelectionDAG::ComputeKnownBits to use KnownBits::countMinTrailingZeros and countMinLeadingZeros to set the minimum guaranteed leading/trailing known zero bits. Differential Revision: https://reviews.llvm.org/D72573

[MIPS] Regenerate shl/lshr shift tests

2020-01-12T14:35:34+00:00

MipsDelaySlotFiller: Update registers def-uses for BUNDLE instructions

2020-01-09T20:46:02+00:00

Summary: In commit b91f239485fb7bb8d29be3e0b60660a2de7570a9 I updated the MipsDelaySlotFiller to skip BUNDLE instructions. However, in addition to not considering BUNDLE instructions for the delay slot, we also need to ensure that the register def-use information is updated. Not updating this information caused run-time crashes (when using the out-of-tree CHERI backend) since later definitions could be overwritten with earlier register values. Reviewers: atanasyan Reviewed By: atanasyan Differential Revision: https://reviews.llvm.org/D72254

GlobalISel: Correct result type for G_FCMP in lowerFPTOUI

2020-01-06T22:21:51+00:00

Using the final result type doesn't make any sense. Use the natural default boolean type for the select condition.

[MIPS GlobalISel] Select bitreverse. Recommit

2019-12-30T17:06:29+00:00

G_BITREVERSE is generated from llvm.bitreverse. intrinsics, clang genrates these intrinsics from __builtin_bitreverse32 and __builtin_bitreverse64. Add lower and narrowscalar for G_BITREVERSE. Lower G_BITREVERSE on MIPS32. Recommit notes: Introduce temporary variables in order to make sure instructions get inserted into MachineFunction in same order regardless of compiler used to build llvm. Differential Revision: https://reviews.llvm.org/D71363

Revert "[MIPS GlobalISel] Select bitreverse"

2019-12-30T13:29:47+00:00

This reverts commit dbc136e0fe7e14c64dcb78e72321bb41af60afa4. It broke buildbots: http://lab.llvm.org:8011/builders/clang-x86_64-debian-fast/builds/21066

[MIPS GlobalISel] Select bitreverse

2019-12-30T10:26:45+00:00

[MIPS GlobalISel] Select bswap

2019-12-30T10:13:22+00:00

G_BSWAP is generated from llvm.bswap. intrinsics, clang genrates these intrinsics from __builtin_bswap32 and __builtin_bswap64. Add lower and narrowscalar for G_BSWAP. Lower G_BSWAP on MIPS32, select G_BSWAP on MIPS32 revision 2 and later. Differential Revision: https://reviews.llvm.org/D71362

Migrate function attribute "no-frame-pointer-elim"="false" to "frame-pointer"="none" as cleanups after D56351

2019-12-25T00:27:51+00:00