VSelMovmskOpt Class Reference

Inheritance diagram for VSelMovmskOpt:

Collaboration diagram for VSelMovmskOpt:

List of all members.

Public Member Functions
	VSelMovmskOpt ()
const char *	getPassName () const
bool	runOnBasicBlock (llvm::BasicBlock &BB)
Static Public Attributes
static char	ID = 0

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Detailed Description

This simple optimization pass looks for a vector select instruction with an all-on or all-off constant mask, simplifying it to the appropriate operand if so.

Todo:

The better thing to do would be to submit a patch to LLVM to get these; they're presumably pretty simple patterns to match.

Definition at line 884 of file opt.cpp.

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Constructor & Destructor Documentation

VSelMovmskOpt::VSelMovmskOpt

(

)

[inline]

Definition at line 886 of file opt.cpp.

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Member Function Documentation

const char* VSelMovmskOpt::getPassName

(

)

const [inline]

Definition at line 889 of file opt.cpp.

bool VSelMovmskOpt::runOnBasicBlock

(

llvm::BasicBlock &

BB

)

Definition at line 899 of file opt.cpp.

References ALL_OFF, ALL_ON, DEBUG_END_PASS, DEBUG_START_PASS, lGetMask(), lGetMaskStatus(), LLVMInt64(), m, Module::module, NULL, and stderr.

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Member Data Documentation

char VSelMovmskOpt::ID = 0 [static]

Definition at line 892 of file opt.cpp.

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The documentation for this class was generated from the following file:

• opt.cpp