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Diffstat (limited to 'tools/llvmc/examples/mcc16/README')
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diff --git a/tools/llvmc/examples/mcc16/README b/tools/llvmc/examples/mcc16/README deleted file mode 100644 index 6d2b73d..0000000 --- a/tools/llvmc/examples/mcc16/README +++ /dev/null @@ -1,75 +0,0 @@ -This is a basic compiler driver for the PIC16 toolchain that shows how to create -your own llvmc-based drivers. It is based on the examples/Skeleton template. - -The PIC16 toolchain looks like this: - -clang-cc (FE) -> llvm-ld (optimizer) -> llc (codegen) -> native-as -> native-ld - -Following features were requested by Sanjiv: - -From: Sanjiv Gupta <sanjiv.gupta <at> microchip.com> -Subject: Re: llvmc for PIC16 -Newsgroups: gmane.comp.compilers.llvm.devel -Date: 2009-06-05 06:51:14 GMT - -The salient features that we want to have in the driver are: -1. llvm-ld will be used as "The Optimizer". -2. If the user has specified to generate the final executable, then -llvm-ld should run on all the .bc files generated by clang and create a -single optimized .bc file for further tools. -3. -Wo <options> - pass optimizations to the llvm-ld -4. mcc16 -Wl <options> - pass options to native linker. -5. mcc16 -Wa <options> - pass options to native assembler. - -Here are some example command lines and sample command invocations as to -what should be done. - -$ mcc16 -S foo.c -// [clang-cc foo.c] -> foo.bc -// [llvm-ld foo.bc] -> foo.opt.bc -// [llc foo.opt.bc] -> foo.s - -$ mcc16 -S foo.c bar.c -// [clang-cc foo.c] -> foo.bc -// [llvm-ld foo.bc] -> foo.opt.bc -// [llc foo.opt.bc] -> foo.s -// [clang-cc bar.c] -> bar.bc -// [llvm-ld bar.bc] -> bar.opt.bc -// [llc bar.opt.bc] -> bar.s - -** Use of -g causes llvm-ld to run with -disable-opt -$ mcc16 -S -g foo.c -// [clang-cc foo.c] -> foo.bc -// [llvm-ld -disable-opt foo.bc] -> foo.opt.bc -// [llc foo.opt.bc] -> foo.s - -** -I is passed to clang-cc, -pre-RA-sched=list-burr to llc. -$ mcc16 -S -g -I ../include -pre-RA-sched=list-burr foo.c -// [clang-cc -I ../include foo.c] -> foo.bc -// [llvm-ld -disable-opt foo.bc] -> foo.opt.bc -// [llc -pre-RA-sched=list-burr foo.opt.bc] -> foo.s - -** -Wo passes options to llvm-ld -$ mcc16 -Wo=opt1,opt2 -S -I ../include -pre-RA-sched=list-burr foo.c -// [clang-cc -I ../include foo.c] -> foo.bc -// [llvm-ld -opt1 -opt2 foo.bc] -> foo.opt.bc -// [llc -pre-RA-sched=list-burr foo.opt.bc] -> foo.s - -** -Wa passes options to native as. -$ mcc16 -c foo.c -Wa=opt1 -// [clang-cc foo.c] -> foo.bc -// [llvm-ld foo.bc] -> foo.opt.bc -// [llc foo.opt.bc] -> foo.s -// [native-as -opt1 foo.s] -> foo.o - -$ mcc16 -Wo=opt1 -Wl=opt2 -Wa=opt3 foo.c bar.c -// [clang-cc foo.c] -> foo.bc -// [clang-cc bar.c] -> bar.bc -// [llvm-ld -opt1 foo.bc bar.bc] -> a.out.bc -// [llc a.out.bc] -> a.out.s -// [native-as -opt3 a.out.s] -> a.out.o -// [native-ld -opt2 a.out.o] -> a.out - -Is this achievable by a tablegen based driver ? - -- Sanjiv |