maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test
History
Daniel Jasper 8f239f83b0 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
LTO [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
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
…
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
…
tools lit: Add 'cd' support to the internal shell and port some tests 2015-03-02 21:33:18 +00:00
.clang-format
…
CMakeLists.txt Back out two accidental changes that snuck in with r229245. Sorry these 2015-02-14 09:05:58 +00:00
Makefile Attempt to fix the builders. 2015-02-22 07:01:41 +00:00
Makefile.tests
…
TestRunner.sh
…
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