Manman Ren 91c5346d91 X86: replace SUB with CMP if possible ...

This patch will optimize the following
        movq    %rdi, %rax
        subq    %rsi, %rax
        cmovsq  %rsi, %rdi
        movq    %rdi, %rax
to
        cmpq    %rsi, %rdi
        cmovsq  %rsi, %rdi
        movq    %rdi, %rax

Perform this optimization if the actual result of SUB is not used.

rdar: 11540023


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157755 91177308-0d34-0410-b5e6-96231b3b80d8

2012-05-31 17:20:29 +00:00

..

ADT

DenseMap's move assignment operator needs to return *this

2012-05-29 20:33:09 +00:00

Analysis

Teach SCEV's icmp simplification logic that a-b == 0 is equivalent to a == b.

2012-05-30 18:32:23 +00:00

Assembly

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Bitcode

revert r156383: removal of TYPE_CODE_FUNCTION_OLD

2012-05-23 15:19:39 +00:00

CodeGen

Add an insertPass API to TargetPassConfig. <rdar://problem/11498613>

2012-05-30 00:17:12 +00:00

Config

Nuke a few dead remnants of the CBE.

2012-05-05 17:45:12 +00:00

DebugInfo

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ExecutionEngine

Fix some formatting, grammar and style issues and add a couple of missing comments.

2012-04-29 12:40:47 +00:00

MC

Emit register unit root tables.

2012-05-31 17:18:26 +00:00

Object

Refactor data-in-code annotations.

2012-05-18 19:12:01 +00:00

Support

ConstantRangesSet renamed to IntegersSubset. CRSBuilder renamed to IntegersSubsetMapping.

2012-05-29 12:26:47 +00:00

TableGen

Don't put TGParser scratch results in the output.

2012-05-24 22:17:36 +00:00

Target

X86: replace SUB with CMP if possible

2012-05-31 17:20:29 +00:00

Transforms

add a new pass to instrument loads and stores for run-time bounds checking

2012-05-22 17:19:09 +00:00

Argument.h

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Attributes.h

PR12696: Attribute bits above 1<<30 are not encoded in bitcode

2012-05-28 15:45:43 +00:00

AutoUpgrade.h

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BasicBlock.h

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CallGraphSCCPass.h

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CallingConv.h

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CMakeLists.txt

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Constant.h

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Constants.h

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DefaultPasses.h

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DerivedTypes.h

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Function.h

Teach Function::hasAddressTaken that BlockAddress doesn't really take

2012-05-12 08:30:16 +00:00

GlobalAlias.h

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GlobalValue.h

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GlobalVariable.h

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GVMaterializer.h

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InitializePasses.h

Add an insertPass API to TargetPassConfig. <rdar://problem/11498613>

2012-05-30 00:17:12 +00:00

InlineAsm.h

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InstrTypes.h

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Instruction.def

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Instruction.h

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Instructions.h

ConstantRangesSet renamed to IntegersSubset. CRSBuilder renamed to IntegersSubsetMapping.

2012-05-29 12:26:47 +00:00

IntrinsicInst.h

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Intrinsics.h

generalize this to allow any argument.

2012-05-27 19:17:16 +00:00

Intrinsics.td

Add llvm.fabs intrinsic.

2012-05-28 21:48:37 +00:00

IntrinsicsARM.td

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IntrinsicsCellSPU.td

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IntrinsicsHexagon.td

Hexagon V5 intrinsics support.

2012-05-11 19:39:13 +00:00

IntrinsicsNVVM.td

Remove the PTX back-end and all of its artifacts (triple, etc.)

2012-05-24 21:38:21 +00:00

IntrinsicsPowerPC.td

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IntrinsicsX86.td

Add intrinsic for pclmulqdq instruction.

2012-05-31 04:37:40 +00:00

IntrinsicsXCore.td

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LinkAllPasses.h

add a new pass to instrument loads and stores for run-time bounds checking

2012-05-22 17:19:09 +00:00

LinkAllVMCore.h

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Linker.h

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LLVMContext.h

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Metadata.h

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Module.h

I noticed that named metadata doesn't provide a direct way of getting at the

2012-05-16 12:25:43 +00:00

OperandTraits.h

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Operator.h

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Pass.h

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PassAnalysisSupport.h

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PassManager.h

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PassManagers.h

Use ArrayRef instead of an explicit vector type.

2012-05-14 07:53:40 +00:00

PassRegistry.h

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PassSupport.h

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SymbolTableListTraits.h

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Type.h

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Use.h

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User.h

Grammar.

2012-05-16 22:08:58 +00:00

Value.h

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ValueSymbolTable.h

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