Wan Xiaofei 887f9c5ec1 Quick look-up for block in loop. ... This patch implements quick look-up for block in loop by maintaining a hash set for blocks. It improves the efficiency of loop analysis a lot, the biggest improvement could be 5-6%(458.sjeng). Below are the compilation time for our benchmark in llc before & after the patch. Benchmark llc - trunk llc - patched 401.bzip2 0.339081 100.00% 0.329657 102.86% 403.gcc 19.853966 100.00% 19.605466 101.27% 429.mcf 0.049823 100.00% 0.048451 102.83% 433.milc 0.514898 100.00% 0.510217 100.92% 444.namd 1.109328 100.00% 1.103481 100.53% 445.gobmk 4.988028 100.00% 4.929114 101.20% 456.hmmer 0.843871 100.00% 0.825865 102.18% 458.sjeng 0.754238 100.00% 0.714095 105.62% 464.h264ref 2.9668 100.00% 2.90612 102.09% 471.omnetpp 4.556533 100.00% 4.511886 100.99% bitmnp01 0.038168 100.00% 0.0357 106.91% idctrn01 0.037745 100.00% 0.037332 101.11% libquake2 3.78689 100.00% 3.76209 100.66% libquake_ 2.251525 100.00% 2.234104 100.78% linpack 0.033159 100.00% 0.032788 101.13% matrix01 0.045319 100.00% 0.043497 104.19% nbench 0.333161 100.00% 0.329799 101.02% tblook01 0.017863 100.00% 0.017666 101.12% ttsprk01 0.054337 100.00% 0.053057 102.41% Reviewer : Andrew Trick <atrick@apple.com>, Hal Finkel <hfinkel@anl.gov> Approver : Andrew Trick <atrick@apple.com> Test : Pass make check-all & llvm test-suite git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193460 91177308-0d34-0410-b5e6-96231b3b80d8		2013-10-26 03:08:02 +00:00
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Hello	First check in. Modified a comment.	2013-09-27 07:36:10 +00:00
InstCombine	Remove x86_sse42_crc32_64_8 intrinsic. It has no functional difference from x86_sse42_crc32_32_8 and was not mapped to a clang builtin. I'm not even sure why this form of the instruction is even called out explicitly in the docs. Also add AutoUpgrade support to convert it into the other intrinsic with appropriate trunc and zext.	2013-10-15 05:20:47 +00:00
Instrumentation	fix PR17635: false positive with packed structures	2013-10-24 09:17:24 +00:00
IPO	Use address-taken to disambiguate global variable and indirect memops.	2013-10-23 17:28:19 +00:00
ObjCARC
Scalar	Fix SCEVExpander: don't try to expand quadratic recurrences outside a loop.	2013-10-25 21:35:56 +00:00
Utils	Quick look-up for block in loop.	2013-10-26 03:08:02 +00:00
Vectorize	Quick look-up for block in loop.	2013-10-26 03:08:02 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile