Evan Cheng 9568e5c3c3 Teach dag combine to match halfword byteswap patterns. ...

1. (((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8)
   => (bswap x) >> 16
2. ((x&0xff)<<8)|((x&0xff00)>>8)|((x&0xff000000)>>8)|((x&0x00ff0000)<<8))
   => (rotl (bswap x) 16)

This allows us to eliminate most of the def : Pat patterns for ARM rev16
revsh instructions. It catches many more cases for ARM and x86.

rdar://9609108


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133503 91177308-0d34-0410-b5e6-96231b3b80d8

2011-06-21 06:01:08 +00:00

..

Analysis

Remove support for parsing the "type i32" syntax for defining a numbered

2011-06-19 00:03:46 +00:00

Archive

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Assembler

Remove support for parsing the "type i32" syntax for defining a numbered

2011-06-19 00:03:46 +00:00

Bindings/Ocaml

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Bitcode

Remove support for parsing the "type i32" syntax for defining a numbered

2011-06-19 00:03:46 +00:00

BugPoint

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CodeGen

Teach dag combine to match halfword byteswap patterns.

2011-06-21 06:01:08 +00:00

DebugInfo

Test for previous commit.

2011-06-17 14:16:17 +00:00

ExecutionEngine

manually upgrade a bunch of tests to modern syntax, and remove some that

2011-06-17 03:14:27 +00:00

Feature

Remove support for parsing the "type i32" syntax for defining a numbered

2011-06-19 00:03:46 +00:00

FrontendAda

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FrontendC

remove an unreduced testcase.

2011-06-18 19:12:59 +00:00

FrontendC++

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FrontendFortran

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FrontendObjC

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FrontendObjC++

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Integer

Remove support for parsing the "type i32" syntax for defining a numbered

2011-06-19 00:03:46 +00:00

lib

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Linker

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LLVMC

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MC

Emit movq for 64-bit register to XMM register moves, but continue to accept

2011-06-20 18:33:26 +00:00

Object

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Other

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Scripts

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TableGen

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Transforms

indvars -disable-iv-rewrite: Adds support for eliminating identity

2011-06-21 03:22:38 +00:00

Unit

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Verifier

stop accepting begin/end around function bodies in the .ll parser, this isn't pascal anymore.

2011-06-17 06:42:57 +00:00

CMakeLists.txt

Added LLVM_BUILD_MODE to cmake so that lit supports tests with REQUIRES: {buildmode}.

2011-06-16 22:19:20 +00:00

lit.cfg

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lit.site.cfg.in

cmake may require LIT_TOOLS_DIR.

2011-06-16 21:48:57 +00:00

Makefile

Add support to lit for build mode requirements. e.g.

2011-06-16 01:33:35 +00:00

Makefile.tests

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site.exp.in

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TestRunner.sh

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