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Diffstat (limited to 'docs/CommandGuide/llc.pod')
| -rw-r--r-- | docs/CommandGuide/llc.pod | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/docs/CommandGuide/llc.pod b/docs/CommandGuide/llc.pod index eba7859e2882..8adfb682be01 100644 --- a/docs/CommandGuide/llc.pod +++ b/docs/CommandGuide/llc.pod @@ -10,18 +10,19 @@ B<llc> [I<options>] [I<filename>] =head1 DESCRIPTION -The B<llc> command compiles LLVM bitcode into assembly language for a +The B<llc> command compiles LLVM source inputs into assembly language for a specified architecture. The assembly language output can then be passed through a native assembler and linker to generate a native executable. The choice of architecture for the output assembly code is automatically -determined from the input bitcode file, unless the B<-march> option is used to -override the default. +determined from the input file, unless the B<-march> option is used to override +the default. =head1 OPTIONS -If I<filename> is - or omitted, B<llc> reads LLVM bitcode from standard input. -Otherwise, it will read LLVM bitcode from I<filename>. +If I<filename> is - or omitted, B<llc> reads from standard input. Otherwise, it +will from I<filename>. Inputs can be in either the LLVM assembly language +format (.ll) or the LLVM bitcode format (.bc). If the B<-o> option is omitted, then B<llc> will send its output to standard output if the input is from standard input. If the B<-o> option specifies -, @@ -47,20 +48,15 @@ Generate code at different optimization levels. These correspond to the I<-O0>, I<-O1>, I<-O2>, I<-O3>, and I<-O4> optimization levels used by B<llvm-gcc> and B<clang>. -=item B<-f> - -Overwrite output files. By default, B<llc> will refuse to overwrite -an output file which already exists. - =item B<-mtriple>=I<target triple> -Override the target triple specified in the input bitcode file with the -specified string. +Override the target triple specified in the input file with the specified +string. =item B<-march>=I<arch> Specify the architecture for which to generate assembly, overriding the target -encoded in the bitcode file. See the output of B<llc --help> for a list of +encoded in the input file. See the output of B<llc --help> for a list of valid architectures. By default this is inferred from the target triple or autodetected to the current architecture. |