Daniel Jasper 5816fc16b8 During PHI elimination, split critical edges that move copies out of loops. ...

This prevents the behavior observed in llvm.org/PR22369. I am not sure
whether I am reading the code correctly, but the early exit based on
isLiveOutPastPHIs() seems to make the wrong assumption that
RegisterCoalescer won't be able to coalesce those copies later.

This change hides the new behavior behind -no-phi-elim-live-out-early-exit
as it currently breaks four tests:
 * Assertion in:
     CodeGen/Hexagon/hwloop-cleanup.ll
 * Worse code in:
     CodeGen/X86/coalescer-commute4.ll
     CodeGen/X86/phys_subreg_coalesce-2.ll
     CodeGen/X86/zlib-longest-match.ll
   The root cause here seems to be that the heuristic that determines
   the visitation order in RegisterCoalescer gets less lucky.

llvm-svn: 231064

2015-03-03 10:23:11 +00:00

..

Analysis

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

Assembler

Cleanup after r230934 per Dave's suggestions.

2015-03-03 05:39:27 +00:00

Bindings

[OCaml] Add Llvm.build_empty_phi.

2015-02-06 13:42:03 +00:00

Bitcode

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

BugPoint

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

CodeGen

During PHI elimination, split critical edges that move copies out of loops.

2015-03-03 10:23:11 +00:00

DebugInfo

Revert r230979, should apply to all X86 ELF.

2015-03-02 18:50:18 +00:00

ExecutionEngine

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

Feature

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

FileCheck

FileCheck: Add CHECK-SAME

2015-02-26 04:53:00 +00:00

Instrumentation

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

Integer

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

JitListener

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

Linker

lit: Add 'cd' support to the internal shell and port some tests

2015-03-02 21:33:18 +00:00

LTO

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

MC

AVX-512: Add assembly parser support for Rounding mode

2015-03-02 15:00:34 +00:00

Object

lit: Add 'cd' support to the internal shell and port some tests

2015-03-02 21:33:18 +00:00

Other

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

SymbolRewriter

SymbolRewriter: allow rewriting with comdats

2015-01-27 22:57:39 +00:00

TableGen

…

tools

lit: Add 'cd' support to the internal shell and port some tests

2015-03-02 21:33:18 +00:00

Transforms

LowerBitSets: Use byte arrays instead of bit sets to represent in-memory bit sets.

2015-03-03 00:49:28 +00:00

Unit

…

Verifier

Teach the verifier to enforce that the alignment argument of memory intrinsics must be a power of 2.

2015-03-02 09:35:06 +00:00

YAMLParser

…

.clang-format

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CMakeLists.txt

Back out two accidental changes that snuck in with r229245. Sorry these

2015-02-14 09:05:58 +00:00

lit.cfg

Change SystemZ large tests to use the existing long_tests property

2015-03-02 19:34:11 +00:00

lit.site.cfg.in

Remove log statements from config scripts.

2015-02-22 07:31:42 +00:00

Makefile

Attempt to fix the builders.

2015-02-22 07:01:41 +00:00

Makefile.tests

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TestRunner.sh

…