Manman Ren 692d1830f3 Register Allocator: check other options before using a CSR for the first time. ...

When register allocator's stage is RS_Spill, we choose spill over using the CSR
for the first time, if the spill cost is lower than CSRCost. 
When register allocator's stage is < RS_Split, we choose pre-splitting over
using the CSR for the first time, if the cost of splitting is lower than
CSRCost.

CSRCost is set with command-line option "regalloc-csr-first-time-cost". The
default value is 0 to generate the same codes as before this commit.

With a value of 15 (1 << 14 is the entry frequency), I measured performance
gain of 3% on 253.perlbmk and 1.7% on 197.parser, with instrumented PGO,
on an arm device.

rdar://16162005


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204690 91177308-0d34-0410-b5e6-96231b3b80d8

2014-03-25 00:16:25 +00:00

..

Analysis

Reject alias to undefined symbols in the verifier.

2014-03-12 20:15:49 +00:00

Assembler

Reject alias to undefined symbols in the verifier.

2014-03-12 20:15:49 +00:00

Bindings

Fix the ocaml test to not create a alias to a declaration.

2014-03-12 21:20:42 +00:00

Bitcode

Remove the linker_private and linker_private_weak linkages.

2014-03-13 23:18:37 +00:00

BugPoint

llvm/test/BugPoint/compile-custom.ll.py: Make it py3-compatible. [PR19112]

2014-03-13 00:10:37 +00:00

CodeGen

Register Allocator: check other options before using a CSR for the first time.

2014-03-25 00:16:25 +00:00

DebugInfo

DebugInfo: Add DW_AT_GNU_ranges_base to skeleton CUs

2014-03-24 21:31:35 +00:00

ExecutionEngine

Ignore old JIT tests in AARch64 - CMake style

2014-02-25 09:31:00 +00:00

Feature

Expose "noduplicate" attribute as a property for intrinsics.

2014-03-18 23:51:07 +00:00

FileCheck

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Instrumentation

[ASan] Add -asan-module to the ASan .ll tests.

2014-03-20 11:16:34 +00:00

Integer

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JitListener

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Linker

Switch the type field in DIVariable and DIGlobalVariable over to DITypeRefs.

2014-03-18 02:34:58 +00:00

LTO

Module: Don't rename in getOrInsertFunction()

2014-03-10 23:42:28 +00:00

MC

Fix crashes when assembler directives are used that are not

2014-03-25 00:05:50 +00:00

Object

Teach llvm-readobj to print human friendly description of reserved sections.

2014-03-24 05:00:34 +00:00

Other

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TableGen

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tools

Teach llvm-readobj to print human friendly description of reserved sections.

2014-03-24 05:00:34 +00:00

Transforms

Allow constant folding of ceil function whenever feasible

2014-03-24 04:36:06 +00:00

Unit

With rpaths being set correctly, SHLIBPATH_VAR is not needed anymore.

2014-02-28 16:16:51 +00:00

Verifier

Reject alias to undefined symbols in the verifier.

2014-03-12 20:15:49 +00:00

YAMLParser

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.clang-format

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CMakeLists.txt

[CMake] check-llvm: Include "bugpoint" in dependent list.

2014-03-04 16:13:30 +00:00

lit.cfg

Refactor llvm/test/lit.cfg to use lit.util.which.

2014-03-21 17:31:35 +00:00

lit.site.cfg.in

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Makefile

With rpaths being set correctly, SHLIBPATH_VAR is not needed anymore.

2014-02-28 16:16:51 +00:00

Makefile.tests

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TestRunner.sh

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