compilers principles techniques and tools phần 3 docx

... typically used in compilers. We first present the basic concepts, then techniques suitable for hand implemen- tation, and finally algorithms that have been used in automated tools. Since programs ... there. McNaughton and Yamada [ 13] first gave an algorithm to convert regular expressions directly to deterministic finite automat a. Algorithm 3. 36 described in Section 3. 9 was...

Ngày tải lên: 12/08/2014, 11:20

... 3. 3. I forward Figure 3. 3: Using a pair of input buffers Each buffer is of the same size N, and N is usually the size of a disk block, e.g., 4096 bytes. Using one system read command ... is, just the first and last separated by a hyphen. Thus, [abc] is shorthand for alblc, and [a-z] is shorthand for aJbJ . . . Jz. Example 3. 7 : Using these shorthands, we can rewri...

Ngày tải lên: 12/08/2014, 11:20

... Cataloging-in-Publication Data Compilers : principles, techniques, and tools 1 Alfred V. Aho [et al.]. 2nd ed. p. cm. Rev. ed. of: Compilers, principles, techniques, and tools / Alfred V. ... Compiler-Construction Tools 12 1 .3 The Evolution of Programming Languages 12 1 .3. 1 The Move to Higher-level Languages 13 1 .3. 2 Impacts on Compilers 14...

Ngày tải lên: 12/08/2014, 11:20

... lexval = 3 Figure 5 .3: Annotated parse tree for 3 * 5 + 4 n Example 5 .3 : The SDD in Fig. 5.4 computes terms like 3 * 5 and 3 * 5 * 7. The top-down parse of input 3 * 5 begins ... $$ = $1 + $3; 1 1expr'-'expr <$$=$I- $3; ) Iexpr'*)expr <$$=$1* $3; > Iexpr'/)expr <$$=$1/ $3; ) 1 )() expr '1) < $$ = $2;...

Ngày tải lên: 12/08/2014, 11:20

... recursive call to q(1 ,3) was made. Activations p(l ,3) and q(1,O) have begun and ended during the lifetime of q(l ,3) , leaving the activation record for q(l ,3) Simpo PDF Merge and Split Unregistered ... "The design of a Pascal compiler," Softurare-Practice and Experience 1:4 (1971), pp. 30 9 -33 3. Simpo PDF Merge and Split Unregistered Version - http://www.sim...

Ngày tải lên: 12/08/2014, 11:20

... statically allocated starting at locations 30 0 and 36 4, re- spectively. The instructions starting at address 100 implement the statements Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 512 ... take only one operand do not have a src2. Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com CHAPTER 8. CODE GENERATION allocation and...

Ngày tải lên: 12/08/2014, 11:20

... UNDEF 3 2 NAC NAC 3 2 NAC m m0 fl (ma) f2 b0) fl(m0) A f2(m0) f3(fl (m0) A fi(m0)) f3(fl (m0>> f3 (f2 (mo>> f3(fl(mo))Af3(f2(m0)) m(x> UNDEF 2 3 NAC ... 9.27, x and y are set to 2 and 3 in block B1, and to 3 and 2, respectively, in block B2. We know that regardless of which path is taken, the value of z at the end of bloc...

Ngày tải lên: 12/08/2014, 11:20

... LD r3, x // r3 = x ADD r2, r2, r3 // r2 = r2 + r3 ADD rl, rl, r2 // rl = rl + r2 LD r2, y // r2 = y LD r3, z // r3 = z ADD r2, r2, r3 // r2 = r2 + r3 ADD ... R1, R2 5) ST a, R3 ST a, R1 ST a, R3 6) ST b, R2 ST b, R2 ST b, R4 Figure 10.10: Machine code for Exercise 10 .3. 1 10 .3. 4 Exercises for Section 10 .3 Exercise 10 .3. 1 : Fo...

Ngày tải lên: 12/08/2014, 11:20

... application. Wiley Publishing, Inc. E-learning Tools and Technologies X Media players and viewers X 133 7 Media players and viewers Like the QuickTime Player and the Windows Media Player, RealOne can ... sound, video, and other dynamic media efficiently over the network (chapter 13) The tools in this section tend to be the most expensive and technically complex of the t...

Ngày tải lên: 14/08/2014, 12:21