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Zhou Sheng f4e0514807 The patch is to improve the memory footprint of pass GlobalOpt. Also check in a case to repeat the issue, on which 'opt -globalopt' consumes 1.6GB memory. The big memory footprint cause is that current GlobalOpt one by one hoists and stores the leaf element constant into the global array, in each iteration, it recreates the global array initializer constant and leave the old initializer alone. This may result in many obsolete constants left. For example: we have global array @rom = global [16 x i32] zeroinitializer After the first element value is hoisted and installed: @rom = global [16 x i32] [ 1, 0, 0, ... ] After the second element value is installed: @rom = global [16 x 32] [ 1, 2, 0, 0, ... ] // here the previous initializer is obsolete ... When the transform is done, we have 15 obsolete initializers left useless. llvm-svn: 169079		2012-12-01 04:38:53 +00:00
autoconf	Fix a pasto.	2012-11-19 19:31:02 +00:00
bindings	[python] fix get_library()	2012-11-20 22:27:55 +00:00
cmake	Removing SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG	2012-11-26 02:02:08 +00:00
docs	Removed redundancy in wording	2012-11-30 23:14:52 +00:00
examples	Fix gcc's -Wunused-but-set-variable warnings.	2012-11-26 00:56:44 +00:00
include	misched: Fix RegisterPressureTracker handling of DebugVals.	2012-12-01 01:22:49 +00:00
lib	The patch is to improve the memory footprint of pass GlobalOpt.	2012-12-01 04:38:53 +00:00
projects	Add ENABLE_CXX11 and ENABLE_WERROR to Makefile.llvm.rules for sample project. They were previously added to Makefile.llvm.config.in but the consumption was missing	2012-11-27 08:12:24 +00:00
runtime	libprofile/CommonProfiling.c: Fix according to C89.	2012-11-02 01:32:02 +00:00
test	The patch is to improve the memory footprint of pass GlobalOpt.	2012-12-01 04:38:53 +00:00
tools	Add a -time-compilations=<N> option to llc.	2012-11-30 21:42:47 +00:00
unittests	Switch LLVM_USE_RVALUE_REFERENCES to LLVM_HAS_RVALUE_REFERENCES.	2012-11-30 11:45:22 +00:00
utils	Update the emacs mode to recognize fadd, fsum, fmul, fdiv, frem, fcmp, icmp	2012-12-01 00:42:27 +00:00
.gitignore	Add extra vim swap file pattern	2012-10-09 23:48:34 +00:00
CMakeLists.txt	Kick off 3.3 cycle for LLVM trunk.	2012-11-17 22:01:08 +00:00
CODE_OWNERS.TXT	Be more clear on what parts of code I own.	2012-11-30 23:00:25 +00:00
configure	Fix a pasto.	2012-11-19 19:31:02 +00:00
CREDITS.TXT	Update my email address.	2012-11-29 21:17:26 +00:00
LICENSE.TXT	Few more small CellSPU removals.	2012-11-14 22:13:56 +00:00
llvm.spec.in	Tidy up. s/Low Level Virtual Machine/LLVM/.	2012-01-25 22:00:23 +00:00
LLVMBuild.txt	LLVMBuild: Introduce a common section which currently has a list of the	2011-12-12 22:45:54 +00:00
Makefile	[c-index-test] When building with BUILD_CLANG_ONLY=YES, include c-index-test.	2012-11-06 19:54:46 +00:00
Makefile.common	[docs] Remove unsupported references to ExtraSource variable.	2012-05-15 21:32:27 +00:00
Makefile.config.in	Re-enable support for --program-prefix.	2012-10-01 18:40:32 +00:00
Makefile.rules	Use MACOSX_DEPLOYMENT_TARGET when it is set. <rdar://problem/12433905>	2012-10-12 21:48:14 +00:00
README.txt	Test commit.	2012-11-29 16:19:11 +00:00

README.txt

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the HTML documentation provided in docs/index.html for further
assistance with LLVM.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.