Suyog Sarda c9ea25fc51 This patch implements optimization as mentioned in PR19753: Optimize comparisons with "ashr/lshr exact" of a constanst. ...

It handles the errors which were seen in PR19958 where wrong code was being emitted due to earlier patch.
Added code for lshr as well as non-exact right shifts.

It implements : 
(icmp eq/ne (ashr/lshr const2, A), const1)" ->
(icmp eq/ne A, Log2(const2/const1)) ->
(icmp eq/ne A, Log2(const2) - Log2(const1))

Differential Revision: http://reviews.llvm.org/D4068
 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213678 91177308-0d34-0410-b5e6-96231b3b80d8

2014-07-22 19:19:36 +00:00

..

Analysis

Improve BasicAA CS-CS queries (redux)

2014-07-17 01:28:25 +00:00

Assembler

Rename metadata llvm.loop.vectorize.unroll to llvm.loop.vectorize.interleave.

2014-07-21 23:11:03 +00:00

Bindings

[OCaml] Don't truncate constants over 32 bits in Llvm.const_int.

2014-07-22 13:55:20 +00:00

Bitcode

Make use of the align parameter attribute for all pointer arguments

2014-07-22 16:58:55 +00:00

BugPoint

llvm/test/BugPoint/compile-custom.ll: Use explicit %python to invoke a test script, compile-custom.ll.py, for shebang-incapable hosts.

2014-07-11 14:44:10 +00:00

CodeGen

[mips] Fix two patterns that select i32's (for MIPS32r6) / i64's (for MIPS64r6)

2014-07-22 13:36:02 +00:00

DebugInfo

Revert "Recommit r212203: Don't try to construct debug LexicalScopes hierarchy for functions that do not have top level debug information."

2014-07-21 20:45:59 +00:00

ExecutionEngine

[RuntimeDyld] Replace a crufty old ARM RuntimeDyld test with a new one that uses

2014-07-10 23:29:11 +00:00

Feature

IR: Allow comdats to be applied to globals with internal linkage

2014-07-13 04:56:11 +00:00

FileCheck

Add FileCheck -implicit-check-not option to allow stricter tests without adding too many CHECK-NOTs manually.

2014-07-11 12:39:32 +00:00

Instrumentation

[ASan] Don't instrument load/stores with !nosanitize metadata.

2014-07-17 18:48:12 +00:00

Integer

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JitListener

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Linker

IR: Add COMDATs to the IR

2014-06-27 18:19:56 +00:00

LTO

Change the default input for llvm-nm to be a.out instead of standard input

2014-06-23 20:27:53 +00:00

MC

X86: drop relocations on __eh_frame sections globally.

2014-07-22 15:47:09 +00:00

Object

Add printing of Mach-O stabs in llvm-nm.

2014-07-17 22:47:16 +00:00

Other

IR: Fold away compares between GV GEPs and GVs

2014-07-04 22:05:26 +00:00

TableGen

Revert of r213521. This change introduced a non-hermetic test (depending on a

2014-07-22 02:32:12 +00:00

tools

llvm-objdump: Handle BSS sections larger than the object file

2014-07-14 16:20:14 +00:00

Transforms

This patch implements optimization as mentioned in PR19753: Optimize comparisons with "ashr/lshr exact" of a constanst.

2014-07-22 19:19:36 +00:00

Unit

Let test/Unit/lit.cfg add config.shlibdir to $PATH on DLL platforms like cygming.

2014-07-04 05:11:55 +00:00

Verifier

IR: Allow comdats to be applied to globals with internal linkage

2014-07-13 04:56:11 +00:00

YAMLParser

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.clang-format

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CMakeLists.txt

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lit.cfg

llvm/test/lit.cfg: Let %python available.

2014-07-11 14:36:39 +00:00

lit.site.cfg.in

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Makefile

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Makefile.tests

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TestRunner.sh

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