Peephole optimization is an optimization technique performed on a small set of compiler-generated instructions; the small set is known as the peephole or window. Peephole optimization involves changing the small set of instructions to an equivalent set that has better performance. For example: * instead of pushing register A onto the stack and then immediately popping the value back into register A, a peephole optimization would remove both instructions; * instead of adding A to A, a peephole optimization might do an arithmetic shift left; * instead of multiplying a floating point register by 8, a peephole optimization might scale the floating point register's exponent by 3; and * instead of multiplying an index by 4, adding the result to a base address to get a pointer value, and then dereferencing the pointer, a peephole optimization might use a hardware addressing mode that accomplishes the same result with one instruction. The term peephole optimization was introduced by William Marshall McKeeman in 1965. (Wikipedia).
Compilation - Part Five: Object Code Generation
This is part five of a series of videos about compilation. Part five is about generating machine code from intermediate representations of a program, such as syntax trees or three address code (TAC). It covers instruction selection, register allocation and assignment and instruction orde
From playlist Compilation
How to use trigonometry values to solve a word problem - Learn math online
๐ Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr
From playlist Evaluate Inverse Trigonometric Functions
RubyConf Mini 2022: Looking Into Peephole Optimizations by Maple Ong
Did you know Ruby optimizes your code before executing it? If so, ever wonder how that works? The Ruby VM performs various optimizations on bytecode before executing them, one of them called peephole optimizations. Letโs learn about how some peephole optimizations work and how these small
From playlist RubyConf 2022: Mini and Houston
Use trigonometry to solve word problem with angle of elevation
๐ Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr
From playlist Evaluate Inverse Trigonometric Functions
!!Con West 2020: Nick Fitzgerald - Writing Programs! That Write Other Programs!!
Presented at !!Con West 2020: http://bangbangcon.com/west Why write programs when you can write a program to write programs for you? And that program writes programs that are faster than the programs youโd write by hand. And that programโs programs are actually, you know, correct. Wow! Y
From playlist !!Con West 2020
Finding the distance of an antenna using trigonometry of two triangles
๐ Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr
From playlist Evaluate Inverse Trigonometric Functions
MIT 6.004 Computation Structures, Spring 2017 Instructor: Chris Terman View the complete course: https://ocw.mit.edu/6-004S17 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP62WVs95MNq3dQBqY2vGOtQ2 11.2.2 Compiling Expressions License: Creative Commons BY-NC-SA More in
From playlist MIT 6.004 Computation Structures, Spring 2017
Lec 16 | MIT 6.035 Computer Language Engineering, Fall 2005
Putting it all Together View the complete course: http://ocw.mit.edu/6-035F05 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 6.035 Computer Language Engineering, Fall 2005
Compilation - Part Four: Intermediate Code
This is part four of a series of videos about compilation. Part four is about an intermediate representation of source programs that some compilers generate known as intermediate code. The video focuses on a form of intermediate code known as Three Address Code (TAC). You will see the g
From playlist Compilation
13_2 Optimization with Constraints
Here we use optimization with constraints put on a function whose minima or maxima we are seeking. This has practical value as can be seen by the examples used.
From playlist Advanced Calculus / Multivariable Calculus
The 1995 Hubble photo that changed astronomy
The Hubble Deep Field, explained by the man who made it happen. Subscribe to our channel! http://goo.gl/0bsAjO If you hold a pin at armโs length up in the air, the head of the pin covers approximately the amount of sky that appears in the Hubble Deep Field. The iconic 1995 image is crowd
From playlist Hubble Legacy Field
A very basic overview of optimization, why it's important, the role of modeling, and the basic anatomy of an optimization project.
From playlist Optimization
Calculus: We present a procedure for solving word problems on optimization using derivatives. Examples include the fence problem and the minimum distance from a point to a line problem.
From playlist Calculus Pt 1: Limits and Derivatives
RubyConf 2018 - Pointers for Eliminating Heaps of Memory by Aaron Patterson
RubyConf 2018 - Pointers for Eliminating Heaps of Memory by Aaron Patterson In this presentation, we'll cover techniques in Ruby 2.6 that reduce "dead space" memory overhead found in all Ruby programs today. First, we'll cover the compilation process of Ruby programs, instruction optimiza
From playlist RubyConf 2018
Find the angle of elevation when given the length of a shadow
๐ Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr
From playlist Evaluate Inverse Trigonometric Functions
Solve word problem with angle of elevation and trigonometry
๐ Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to solve these problems it is important that you have a gr
From playlist Evaluate Inverse Trigonometric Functions
WildCard | Exploratorium | Open 7 Days a Week
Return to that magical realm this summer with WildCard, brought to you by the Exploratorium and the Cardboard Institute of Technology (C.I.T.). Armed with box cutters and glue guns, C.I.T. artists are bringing a cardboard cosmos to life at the Exploratorium. And no one, not even the artis
From playlist Wild Card | Exploratorium | Summer 2017
Solving trigonometric equations with multiple angles
๐ Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the given
From playlist Solve Trigonometric Equations with Multi Angles
Solving trigonometric equations with multiple angles
๐ Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the given
From playlist Solve Trigonometric Equations with Multi Angles
Take a Trip to WildCard | Exploratorium | Summer 2017
Return to that magical realm this summer with WildCard, brought to you by the Exploratorium and the Cardboard Institute of Technology (C.I.T.). Armed with box cutters and glue guns, C.I.T. artists are bringing a cardboard cosmos to life at the Exploratorium. And no one, not even the artis
From playlist Wild Card | Exploratorium | Summer 2017