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Wei Mi f160e345be Add some shortcuts in LazyValueInfo to reduce compile time of Correlated Value Propagation. 
The patch is to partially fix PR10584. Correlated Value Propagation queries LVI
to check non-null for pointer params of each callsite. If we know the def of
param is an alloca instruction, we know it is non-null and can return early from
LVI. Similarly, CVP queries LVI to check whether pointer for each mem access is
constant. If the def of the pointer is an alloca instruction, we know it is not
a constant pointer. These shortcuts can reduce the cost of CVP significantly.

Differential Revision: https://reviews.llvm.org/D18066

llvm-svn: 281586
 		2016-09-15 06:28:34 +00:00
..
Analysis Create a getelementptr instead of sub expr for ValueOffsetPair if the 2016-09-14 04:39:50 +00:00
Assembler DebugInfo: New metadata representation for global variables. 2016-09-13 01:12:59 +00:00
Bindings
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Bitcode DebugInfo: New metadata representation for global variables. 2016-09-13 01:12:59 +00:00
BugPoint
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CodeGen [Stackmap] Added callsite counts to emitted function information. 2016-09-14 20:22:03 +00:00
DebugInfo [pdb] Write TPI hash values to the TPI stream. 2016-09-14 23:00:02 +00:00
Demangle Add an c++ itanium demangler to llvm. 2016-09-06 19:16:48 +00:00
Examples
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ExecutionEngine [ORC] Clone module flags metadata into the globals module in the 2016-09-04 17:53:30 +00:00
Feature Revert "Revert "Invariant start/end intrinsics overloaded for address space"" 2016-08-13 23:31:24 +00:00
FileCheck
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Instrumentation [compiler-rt] Avoid instrumenting sanitizer functions 2016-09-14 17:18:37 +00:00
Integer
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JitListener
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LTO Fix auto-upgrade of TBAA tags in Bitcode Reader 2016-09-14 22:29:59 +00:00
LibDriver
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Linker DebugInfo: New metadata representation for global variables. 2016-09-13 01:12:59 +00:00
MC [MC] Handle discardable COFF sections in assembly 2016-09-14 22:41:50 +00:00
Object [Stackmap] Added callsite counts to emitted function information. 2016-09-14 20:22:03 +00:00
ObjectYAML [macho2yaml] Don't write empty linkedit data 2016-08-17 21:46:04 +00:00
Other [PM] Introduce basic update capabilities to the new PM's CGSCC pass 2016-08-24 09:37:14 +00:00
SymbolRewriter
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TableGen [TableGen] AsmMatcher: Add AsmVariantName to Instruction class. 2016-09-08 15:50:52 +00:00
ThinLTO/X86 [ThinLTO] Add an option to llvm-lto to print some basic statistics for the index 2016-09-14 21:04:59 +00:00
Transforms Add some shortcuts in LazyValueInfo to reduce compile time of Correlated Value Propagation. 2016-09-15 06:28:34 +00:00
Unit
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Verifier [coroutines] Part 4[ab]: Coroutine Devirtualization: Lower coro.resume and coro.destroy. 2016-08-04 20:30:07 +00:00
YAMLParser
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tools [llvm-cov] Don't print a verbose title when looking at one file 2016-09-15 04:41:39 +00:00
.clang-format
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CMakeLists.txt Add an c++ itanium demangler to llvm. 2016-09-06 19:16:48 +00:00
TestRunner.sh
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lit.cfg Add an c++ itanium demangler to llvm. 2016-09-06 19:16:48 +00:00
lit.site.cfg.in
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