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Sanjoy Das 96709c4854 [SCEV] Reapply 'Exploit A < B => (A+K) < (B+K) when possible' 
Summary:

This change teaches SCEV's `isImpliedCond` two new identities:

  A u< B u< -C          =>  (A + C) u< (B + C)
  A s< B s< INT_MIN - C =>  (A + C) s< (B + C)

While these are useful on their own, they're really intended to support
D12950.

The original checkin, r248606 had to be backed out due to an issue with
a ObjCXX unit test.  That issue is now fixed, so re-landing.

Reviewers: atrick, reames, majnemer, nlewycky, hfinkel

Subscribers: aadg, sanjoy, llvm-commits

Differential Revision: http://reviews.llvm.org/D12948

llvm-svn: 248637
 		2015-09-25 23:53:45 +00:00
..
Analysis Use fixed-point representation for BranchProbability. 2015-09-25 23:09:59 +00:00
Assembler [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
Bindings Add a way to skip the Go bindings tests even when Go is configured in 2015-09-10 05:47:43 +00:00
Bitcode [Bitcode][Asm] Teach LLVM to read and write operand bundles. 2015-09-24 23:34:52 +00:00
BugPoint Make the default triple optional by allowing an empty string 2015-09-16 05:34:32 +00:00
CodeGen Use fixed-point representation for BranchProbability. 2015-09-25 23:09:59 +00:00
DebugInfo Add REQUIRES: default_triple to these testcases. 2015-09-24 00:35:14 +00:00
Examples Disable llvm/test/Examples/ for now while investigating. 2015-08-28 03:32:43 +00:00
ExecutionEngine [RuntimeDyld] Support non-zero addends for the MachO X86_64 SUBTRACTOR reloc. 2015-09-10 21:05:58 +00:00
Feature Make the default triple optional by allowing an empty string 2015-09-16 05:34:32 +00:00
FileCheck
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Instrumentation Put profile variables of COMDAT functions to it's own COMDAT group. 2015-09-23 22:40:45 +00:00
Integer
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JitListener DI: Require subprogram definitions to be distinct 2015-08-28 20:26:49 +00:00
LTO Make the default triple optional by allowing an empty string 2015-09-16 05:34:32 +00:00
LibDriver Add support for producing thin archives in llvm-lib. 2015-07-17 16:01:11 +00:00
Linker Make the default triple optional by allowing an empty string 2015-09-16 05:34:32 +00:00
MC AMDGPU/SI: Use .hsatext section instead of .text for HSA 2015-09-25 21:41:28 +00:00
Object Avoid SEGFAULT if a requested symbol section is absent. 2015-09-21 19:17:18 +00:00
Other Make the default triple optional by allowing an empty string 2015-09-16 05:34:32 +00:00
SymbolRewriter [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
TableGen [TableGen] Allow TokenTy in intrinsic signatures 2015-09-02 13:36:25 +00:00
Transforms [SCEV] Reapply 'Exploit A < B => (A+K) < (B+K) when possible' 2015-09-25 23:53:45 +00:00
Unit
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Verifier [Bitcode][Asm] Teach LLVM to read and write operand bundles. 2015-09-24 23:34:52 +00:00
YAMLParser
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tools dsymutil: Fix the condition to distinguish module imports form definitions. 2015-09-24 16:10:14 +00:00
.clang-format
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CMakeLists.txt [CMake] Update LLVM_TEST_DEPENDS not to use macho-dump. It has been unused since r247235. 2015-09-19 07:19:30 +00:00
Makefile Add a way to skip the Go bindings tests even when Go is configured in 2015-09-10 05:47:43 +00:00
Makefile.tests
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TestRunner.sh
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lit.cfg Remove macho-dump. Its functionality is now covered by llvm-readobj. 2015-09-22 17:46:10 +00:00
lit.site.cfg.in Add a way to skip the Go bindings tests even when Go is configured in 2015-09-10 05:47:43 +00:00