Nikolai Bozhenov 59948ba101 [X86FixupBWInsts] More precise register liveness if no <imp-use> on MOVs. ...

Summary:
Subregister liveness tracking is not implemented for X86 backend, so
sometimes the whole super register is said to be live, when only a
subregister is really live. That might happen if the def and the use
are located in different MBBs, see added fixup-bw-isnt.mir test.

However, using knowledge of the specific instructions handled by the
bw-fixup-pass we can get more precise liveness information which this
change does.

Reviewers: MatzeB, DavidKreitzer, ab, andrew.w.kaylor, craig.topper

Reviewed By: craig.topper

Subscribers: n.bozhenov, myatsina, llvm-commits, hiraditya

Patch by Andrei Elovikov <andrei.elovikov@intel.com>

Differential Revision: https://reviews.llvm.org/D37559

llvm-svn: 313524

2017-09-18 10:17:59 +00:00

..

Analysis

[TargetTransformInfo] Static alloca has 0 cost

2017-09-15 22:28:12 +00:00

Assembler

Parse and print DIExpressions inline to ease IR and MIR testing

2017-08-23 20:31:27 +00:00

Bindings

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Bitcode

[AutoUpgrade] Fix a compatibility issue with module flag

2017-09-15 21:12:14 +00:00

BugPoint

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CodeGen

[X86FixupBWInsts] More precise register liveness if no <imp-use> on MOVs.

2017-09-18 10:17:59 +00:00

DebugInfo

Revert "Fix Bug 30978 by emitting cv file checksums."

2017-09-16 01:14:36 +00:00

DllTool

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Examples

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ExecutionEngine

[AsmParser] Recommit: Hash is not a comment on some targets

2017-08-21 09:58:37 +00:00

Feature

Add ‘llvm.experimental.constrained.fma‘ Intrinsic.

2017-08-24 04:18:24 +00:00

FileCheck

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Instrumentation

[SanitizeCoverage] Enable stack-depth coverage for -fsanitize=fuzzer

2017-08-30 22:49:31 +00:00

Integer

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JitListener

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LibDriver

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Linker

llvm-dwarfdump: Make -brief the default and add a -verbose option instead.

2017-09-11 23:05:20 +00:00

LTO

Reland r313157, "ThinLTO: Correctly follow aliasee references when dead stripping." which was reverted in r313222.

2017-09-14 05:02:59 +00:00

MC

[RISCV] Add support for disassembly

2017-09-17 14:36:28 +00:00

Object

[MachO] Prevent heap overflow when load command extends past EOF

2017-09-13 13:43:01 +00:00

ObjectYAML

[WebAssembly] Update relocation names to match spec

2017-09-01 17:32:01 +00:00

Other

[PM/CGSCC] Teach the CGSCC pass manager components to gracefully handle

2017-09-14 08:33:57 +00:00

SafepointIRVerifier

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SymbolRewriter

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TableGen

TableGen support for parameterized register class information

2017-09-14 16:56:21 +00:00

ThinLTO/X86

ModuleSummaryAnalysis: Correctly handle all function operand references.

2017-09-07 05:35:35 +00:00

tools

[XRay][tools] Support tail-call exits before we write them in the runtime

2017-09-18 06:08:46 +00:00

Transforms

[X86] Remove VPERM2F128/VPERM2I128 intrinsics and autoupgrade to native shuffles.

2017-09-16 07:36:14 +00:00

Unit

Resubmit "[lit] Force site configs to run before source-tree configs"

2017-09-15 22:10:46 +00:00

Verifier

Revert "Revert r312139 "Verifier: Verify the correctness of fragment expressions attached to globals.""

2017-08-31 00:07:33 +00:00

YAMLParser

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.clang-format

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CMakeLists.txt

Add llvm-isel-fuzzer to test/CMakeLists.txt

2017-09-03 03:00:27 +00:00

lit.cfg

Resubmit "Add a shared llvm.lit module that all test suites can use."

2017-09-16 18:46:21 +00:00

lit.site.cfg.in

Resubmit "Add a shared llvm.lit module that all test suites can use."

2017-09-16 18:46:21 +00:00

TestRunner.sh

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