valgrind --tool=lackey branch to count "useless" 64-bit FP operations

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Core
JavaScript Engine
8 years ago
3 years ago

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(Reporter: jseward, Unassigned)

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(1 attachment)

(Reporter)

Description

8 years ago
Created attachment 417199 [details] [diff] [review]
patch for lackey

A patch for Valgrind's Lackey tool, to count "useless" 64-bit FP
operations.  A "useless" operation is one whose arguments and
result could be represented as signed 31-bit ints and so could
have been done on the integer ALUs rather than the FPU.  Known to
apply to valgrind trunk svn rev 10966.  How to use:

 svn co svn://svn.valgrind.org/valgrind/trunk
 cd trunk
 patch -p1 < valgrind_count_useless_fp.diff
 ./autogen.sh
 ./configure --prefix=`pwd`/Inst
 make -j 2
 make install
 ./Inst/bin/valgrind --tool=lackey <prog and args>
(Assignee)

Updated

3 years ago
Assignee: general → nobody
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