24326140 upgrade LLVM to 3.8.1
24326159 upgrade clang to 3.8.1
22902339 memory corruption caused by undefined behavior in LLVM IR Module
22777179 implement [ -mtune= -march= -mcpu= ] in clang SPARC
22778085 LLVM is using %icc when it should be using %xcc
22778089 the SPARCV9 IS implementation is incomplete
22778098 LLVM should emit proc identifiers in SPARC assembler (capabilities)
22778650 clang should support OpenMP because it can
22859423 llvm CodeGen on Intel emits a bogus .ctors section
22902355 clang CodeGen is affected by 22902339
23701635 clang produces amd64 opcodes, but calls 32-bit assembler by default
23593143 lli JIT bitcode parsing creates a main function with wrong argc/argv
21759660 clang packages should include the scan-view and scan-build utilities
23854357 clang should check for GNU ld
17867434 clang crashed in LEXER
24306550 clang crashes in llvm::Twine::toStringRef
24311726 clang's Perl and Python utilities should not use #!/usr/bin/env
24312028 llvm::Twine needs copy constructors and assignment operators
24312221 classes must be CopyConstructible, CopyAssignable, MoveConstructible ...
24314621 LLVM should build using the new CMake based build system
24314638 LLVM CommandLine subsystem is busted
24314687 static initialization of optimization passes doesn't work as intended
21870069 clang makes incorrect assumptions about anonymous namespace instantiation order
22643565 llvm's Google test harness needs some attention
24314745 clang should support PIE executables in Solaris
.\" Man page generated from reStructuredText.
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.TH "OPT" "1" "2016-07-10" "3.8" "LLVM"
.SH NAME
opt \- LLVM optimizer
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.SH SYNOPSIS
.sp
\fBopt\fP [\fIoptions\fP] [\fIfilename\fP]
.SH DESCRIPTION
.sp
The \fBopt\fP command is the modular LLVM optimizer and analyzer. It
takes LLVM source files as input, runs the specified optimizations or analyses
on it, and then outputs the optimized file or the analysis results. The
function of \fBopt\fP depends on whether the \fB\-analyze\fP option is
given.
.sp
When \fB\-analyze\fP is specified, \fBopt\fP performs various analyses
of the input source. It will usually print the results on standard output, but
in a few cases, it will print output to standard error or generate a file with
the analysis output, which is usually done when the output is meant for another
program.
.sp
While \fB\-analyze\fP is \fInot\fP given, \fBopt\fP attempts to produce an
optimized output file. The optimizations available via \fBopt\fP depend
upon what libraries were linked into it as well as any additional libraries
that have been loaded with the \fI\%\-load\fP option. Use the \fI\%\-help\fP
option to determine what optimizations you can use.
.sp
If \fBfilename\fP is omitted from the command line or is "\fB\-\fP", \fBopt\fP
reads its input from standard input. Inputs can be in either the LLVM assembly
language format (\fB\&.ll\fP) or the LLVM bitcode format (\fB\&.bc\fP).
.sp
If an output filename is not specified with the \fI\%\-o\fP option,
\fBopt\fP writes its output to the standard output.
.SH OPTIONS
.INDENT 0.0
.TP
.B \-f
Enable binary output on terminals. Normally, \fBopt\fP will refuse to
write raw bitcode output if the output stream is a terminal. With this option,
\fBopt\fP will write raw bitcode regardless of the output device.
.UNINDENT
.INDENT 0.0
.TP
.B \-help
Print a summary of command line options.
.UNINDENT
.INDENT 0.0
.TP
.B \-o <filename>
Specify the output filename.
.UNINDENT
.INDENT 0.0
.TP
.B \-S
Write output in LLVM intermediate language (instead of bitcode).
.UNINDENT
.INDENT 0.0
.TP
.B \-{passname}
\fBopt\fP provides the ability to run any of LLVM\(aqs optimization or
analysis passes in any order. The \fI\%\-help\fP option lists all the passes
available. The order in which the options occur on the command line are the
order in which they are executed (within pass constraints).
.UNINDENT
.INDENT 0.0
.TP
.B \-disable\-inlining
This option simply removes the inlining pass from the standard list.
.UNINDENT
.INDENT 0.0
.TP
.B \-disable\-opt
This option is only meaningful when \fB\-std\-link\-opts\fP is given. It
disables most passes.
.UNINDENT
.INDENT 0.0
.TP
.B \-strip\-debug
This option causes opt to strip debug information from the module before
applying other optimizations. It is essentially the same as \fB\-strip\fP
but it ensures that stripping of debug information is done first.
.UNINDENT
.INDENT 0.0
.TP
.B \-verify\-each
This option causes opt to add a verify pass after every pass otherwise
specified on the command line (including \fB\-verify\fP). This is useful
for cases where it is suspected that a pass is creating an invalid module but
it is not clear which pass is doing it.
.UNINDENT
.INDENT 0.0
.TP
.B \-stats
Print statistics.
.UNINDENT
.INDENT 0.0
.TP
.B \-time\-passes
Record the amount of time needed for each pass and print it to standard
error.
.UNINDENT
.INDENT 0.0
.TP
.B \-debug
If this is a debug build, this option will enable debug printouts from passes
which use the \fBDEBUG()\fP macro. See the \fI\%LLVM Programmer\(aqs Manual\fP, section \fB#DEBUG\fP for more information.
.UNINDENT
.INDENT 0.0
.TP
.B \-load=<plugin>
Load the dynamic object \fBplugin\fP\&. This object should register new
optimization or analysis passes. Once loaded, the object will add new command
line options to enable various optimizations or analyses. To see the new
complete list of optimizations, use the \fI\%\-help\fP and \fI\%\-load\fP
options together. For example:
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
opt \-load=plugin.so \-help
.ft P
.fi
.UNINDENT
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B \-p
Print module after each transformation.
.UNINDENT
.SH EXIT STATUS
.sp
If \fBopt\fP succeeds, it will exit with 0. Otherwise, if an error
occurs, it will exit with a non\-zero value.
.SH AUTHOR
Maintained by The LLVM Team (http://llvm.org/).
.SH COPYRIGHT
2003-2016, LLVM Project
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