Jingyue Wu d8fdbb2ea8 [SeparateConstOffsetFromGEP] Fix an illegitimate optimization on zext ...

zext(a + b) != zext(a) + zext(b) even if a + b >= 0 && b >= 0.

e.g., a = i4 0b1111, b = i4 0b0001
zext a + b to i8 = zext 0b0000 to i8 = 0b00000000
(zext a to i8) + (zext b to i8) = 0b00001111 + 0b00000001 = 0b00010000


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210439 91177308-0d34-0410-b5e6-96231b3b80d8

2014-06-08 20:19:38 +00:00

..

Analysis

ScalarEvolution: Derive element size from the type of the loaded element

2014-06-08 19:21:20 +00:00

AsmParser

Allow aliases to be unnamed_addr.

2014-06-06 01:20:28 +00:00

Bitcode

Allow aliases to be unnamed_addr.

2014-06-06 01:20:28 +00:00

CodeGen

Fix typos

2014-06-07 21:23:09 +00:00

DebugInfo

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ExecutionEngine

Add a Constant version of stripPointerCasts.

2014-06-04 19:01:48 +00:00

IR

InstCombine: Canonicalize addrspacecast between different element types

2014-06-06 21:52:55 +00:00

IRReader

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LineEditor

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Linker

Allow aliases to be unnamed_addr.

2014-06-06 01:20:28 +00:00

LTO

Build fix: remove initializeJumpInstrTablesPass() call from LTO

2014-06-07 20:39:53 +00:00

MC

AsmMatchers: Use unique_ptr to manage ownership of MCParsedAsmOperand

2014-06-08 16:18:35 +00:00

Object

[yaml2obj][obj2yaml] Support ELF symbol's visibility flags (default/hidden/protected).

2014-06-06 07:41:57 +00:00

Option

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ProfileData

Use an enum class.

2014-06-03 05:12:33 +00:00

Support

APFloat: x - NaN needs to flip the signbit of NaN when x is a number.

2014-06-08 16:53:31 +00:00

TableGen

Fix typos in tablegen error messages

2014-05-31 05:18:52 +00:00

Target

X86: simplify data layout calculation

2014-06-08 19:08:36 +00:00

Transforms

[SeparateConstOffsetFromGEP] Fix an illegitimate optimization on zext

2014-06-08 20:19:38 +00:00

CMakeLists.txt

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LLVMBuild.txt

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Makefile

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