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f4ea510371
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Evan Cheng f4ea510371 Fix PR2343. An *interesting* coalescer bug. 
BB1:                                                                                                                                                  
  vr1025 = copy vr1024                                                                                                                                
  ..                                                                                                                                                  
BB2:                                                                                                                                                  
  vr1024 = op                                                                                                                                         
         = op vr1025                                                                                                                                     
  <loop eventually branch back to BB1>

Even though vr1025 is copied from vr1024, it's not safe to coalesced them since live range of vr1025 intersects the def of vr1024. This happens when vr1025 is assigned the value of the previous iteration of vr1024 in the loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51394 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-21 22:34:12 +00:00
..
Analysis sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
Archive sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
Assembler Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit. 2008-05-20 22:07:21 +00:00
Bindings/Ocaml Expose ExecutionEngine::getTargetData() to c and ocaml bindings. 2008-03-27 00:27:14 +00:00
Bitcode Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit. 2008-05-20 22:07:21 +00:00
BugPoint Remove llvm-upgrade 2008-02-17 00:15:09 +00:00
C++Frontend resurrect lost tests by renaming them to not end with .tr 2008-05-21 14:48:24 +00:00
CFrontend resurrect lost tests by renaming them to not end with .tr 2008-05-21 14:48:24 +00:00
CodeGen Fix PR2343. An *interesting* coalescer bug. 2008-05-21 22:34:12 +00:00
DebugInfo sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
ExecutionEngine Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit. 2008-05-20 22:07:21 +00:00
Feature Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit. 2008-05-20 22:07:21 +00:00
FrontendAda Testcase for gimplify_expr crash caused by an 2008-01-15 19:55:41 +00:00
FrontendObjC Removing. 2008-05-06 23:56:22 +00:00
Integer sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
lib Fix tests due to llvm2cpp move to llc target 2008-04-23 22:41:53 +00:00
Linker Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit. 2008-05-20 22:07:21 +00:00
LLVMC Check if llvm-gcc is available before running tests. Patch by Matthijs Kooijman! 2008-05-14 16:32:44 +00:00
Other sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
Scripts Add a test script for counting lines. This can be used instead of the 2007-08-10 15:07:05 +00:00
TableGen Rename MRegisterInfo to TargetRegisterInfo. 2008-02-10 18:45:23 +00:00
Transforms Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit. 2008-05-20 22:07:21 +00:00
Verifier Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit. 2008-05-20 22:07:21 +00:00
Makefile Add EXTRA_OPTIONS on the llvmgxx command line. 2008-04-24 17:59:03 +00:00
Makefile.tests Failure.sh is dead, remove it. 2007-04-21 20:46:55 +00:00
TestRunner.sh Avoid an infinite loop when TestRunner.sh is run outside of the test dir. 2007-05-18 02:06:03 +00:00