Intel Corporation

David L Kreitzer

Elmoustapha Ould-Ahmed-Vall

Vinodh Gopal

Bret L Toll

Martin Guy Dixon

Eric W Mahurin

Sean Mirkes

Maxim Loktyukhin

Rakesh Krishnaiyer

Sergey Preis

Philippe Thierry

Vyacheslav Pavlovich Zakharin

Leonardo Jose Borges

Farhana Aleen Schuchman

Mitchell Bodart

Max W Gravitt

Cigdem Y Milobinski

Receiving an instruction indicating a source operand and a destination operand. Storing a result in the destination operand in response to the instruction. The result operand may have: (1) first range of bits having a first end explicitly specified by the instruction in which each bit is identical in value to a bit of the source operand in a corresponding position; and (2) second range of bits that all have a same value regardless of values of bits of the source operand in corresponding positions. Execution of instruction may complete without moving the first range of the result relative to the bits of identical value in the corresponding positions of the source operand, regardless of the location of the first range of bits in the result. Execution units to execute such instructions, computer systems having processors to execute such instructions, and machine-readable medium storing such an instruction are also disclosed.

Processor to perform a bit range isolation instruction

System-on-chip (SoC) to perform a bit range isolation instruction

Hand held device to perform a bit range isolation instruction

Methods, apparatus, systems and articles of manufacture are disclosed to eliminate partial-redundant vector load operations. An example apparatus includes a node grouper to associate a vector operation with a node group, a candidate verifier to perform a dependencies test on a subset of the node group, and identify a subset of the node group as a candidate when the subset satisfies the dependencies test, and a code optimizer to determine replacement code based on a characteristic of the candidate in the node group and compare an estimated cost associated with executing the replacement code to a threshold. The example apparatus also includes a code generator to generate machine code using the replacement code when the estimated cost of executing the replacement code satisfies the threshold.

Methods and apparatus to eliminate partial-redundant vector loads

Methods, apparatus, systems and articles of manufacture are disclosed to eliminate partial-redundant vector loads. An example apparatus includes a node group to associate a vector operation with a node group based on a load type of the vector operation. The example apparatus also includes a candidate identifier to identify a candidate in the node group, the candidate to include a subset of vector operations of the node group. The example apparatus also includes a code optimizer to determine replacement code based on a characteristic of the candidate, and to compare an estimated cost associated with executing the replacement code to a threshold cost relative to a cost of executing the candidate. The example apparatus also includes a code generator to generate machine code using the replacement code when the estimated cost of executing the replacement code satisfies the threshold cost.

Bit range isolation instructions, methods, and apparatus

In one embodiment, the present invention includes a method for determining whether a select statement can be transformed, and if so selecting a first or second transformation operation based on compiler-evaluated values for certain variables of the select statement, performing the selected transformation operation to obtain at least one new statement, and replacing the select statement with the at least one new statement. Other embodiments are described and claimed.

Methods and apparatus for generating branchless code for select statements

An automated method for determining problematic binary files. A group of source code files is compiled using two different compiling environments. One of the compiling environments yields a failing set of binary files (i.e., the resultant executable program exhibits problematic behavior). The other compiling environment yields a passing set of binary files (i.e., the resultant executable program does not exhibit problematic behavior). Complementary sets of files, containing some passing files and some failing files, are used to create test executable programs. The test executable programs are evaluated against pass/fail criteria. The results of these evaluations are used to isolate the problematic binary file or set of files. The process is continued iteratively until the problematic file is determined. According to one embodiment the two compiling environments may be different modes of a given compiler. In one embodiment an algorithm is used to select the passing files and failing files used to create the test executable program. The algorithm is capable of determining two or more files, the interaction of which, causes the test executable program to fail.

Problematic binary isolator

Growing community of inventors

Bristow, VA, United States of America

David L Kreitzer