Marina Yatsina 13c308caeb Take into account the cost of local intervals when selecting split candidate. ...

When selecting a split candidate for region splitting, the register allocator tries to predict which candidate will have the cheapest spill cost.
Global splitting may cause the creation of local intervals, and they might spill.

This patch makes RA take into account the spill cost of local split intervals in use blocks (we already take into account the spill cost in through blocks).
A flag ("-condsider-local-interval-cost") controls weather we do this advanced cost calculation (it's on by default for X86 target, off for the rest).

Differential Revision: https://reviews.llvm.org/D41585

Change-Id: Icccb8ad2dbf13124f5d97a18c67d95aa6be0d14d
llvm-svn: 323870

2018-01-31 13:31:08 +00:00

..

Analysis

Re-commit : [PowerPC] Add handling for ColdCC calling convention and a pass to mark

2018-01-30 16:17:22 +00:00

AsmParser

LLParser: add an argument for overriding data layout and do not check alloca addr space

2018-01-30 22:32:39 +00:00

BinaryFormat

[Support] Move DJB hash to support. NFC

2018-01-28 11:05:10 +00:00

Bitcode

Re-land "[ThinLTO] Add call edges' relative block frequency to per-module summary."

2018-01-25 19:27:17 +00:00

CodeGen

Take into account the cost of local intervals when selecting split candidate.

2018-01-31 13:31:08 +00:00

DebugInfo

[CodeView] Micro-optimizations to speed up type merging.

2018-01-30 17:12:04 +00:00

Demangle

Silence a bunch of implicit fallthrough warnings

2017-12-19 22:05:25 +00:00

ExecutionEngine

Move getPlatformFlags to ELFObjectFileBase and simplify.

2018-01-29 18:27:30 +00:00

Fuzzer

[libFuzzer] Delete llvm/lib/Fuzzer

2017-10-16 20:48:19 +00:00

FuzzMutate

[FuzzMutate] Inst deleter doesn't work with PhiNodes

2018-01-25 09:22:18 +00:00

IR

[LLVM-C] Add Accessors For A Module's Source File Name

2018-01-30 21:34:29 +00:00

IRReader

LLParser: add an argument for overriding data layout and do not check alloca addr space

2018-01-30 22:32:39 +00:00

LineEditor

…

Linker

[IRMover] Add comment and fix test case

2018-01-25 08:35:52 +00:00

LTO

[ThinLTO/gold] Write empty imports even for modules with symbols

2018-01-30 21:19:26 +00:00

MC

[WebAssembly] Remove some unused code and tidy logging. NFC.

2018-01-31 04:21:44 +00:00

Object

CodeGen: support an extension to pass linker options on ELF

2018-01-30 16:29:29 +00:00

ObjectYAML

CodeGen: support an extension to pass linker options on ELF

2018-01-30 16:29:29 +00:00

Option

[Option] For typo '-foo', suggest '--foo'

2018-01-09 19:38:04 +00:00

Passes

Another try to commit 323321 (aggressive instruction combine).

2018-01-25 12:06:32 +00:00

ProfileData

Remove superfluous copies in sample profiling.

2017-12-28 18:10:41 +00:00

Support

Add more initializers to quiet a clang warning

2018-01-30 16:02:32 +00:00

TableGen

[TblGen] Inline an (almost) trivial accessor. No functionality change.

2018-01-23 23:03:50 +00:00

Target

[ARM] Lower lower saturate to 0 and lower saturate to -1 using bit-operations

2018-01-31 13:20:10 +00:00

Testing

Force #define GTEST_LANG_CXX11.

2017-10-27 21:12:28 +00:00

ToolDrivers

[COFF] Keep the underscore on exported decorated stdcall functions in MSVC mode

2018-01-20 11:44:32 +00:00

Transforms

[AggressiveInstCombine] Make TruncCombine class ignore unreachable basic blocks.

2018-01-31 10:41:31 +00:00

WindowsManifest

Fix bug 34608 by moving private header out of public header.

2017-09-14 23:01:13 +00:00

XRay

[XRay] clarify error messages when parsing broken traces

2018-01-30 13:41:34 +00:00

CMakeLists.txt

Moving libFuzzer from LLVM to compiler-rt.

2017-08-21 23:25:12 +00:00

LLVMBuild.txt

Re-apply "Introduce FuzzMutate library"

2017-08-21 22:57:06 +00:00