#!/usr/bin/env bash # # llvm-target generator # # Author: Moritz Angermann # # This file generates the `llvm-targets` file, which contains the # data-layout, cpu and attributes for the target. This is done by # querying `clang` for the data-layout, cpu and attributes based # on a given target. # # To utilize it run it as # # $ ./gen-data-layout.sh > llvm-targets # # Add missing targets to the list below to have them included in # llvm-targets file. # # See Note [LLVM Configuration] in SysTools for the whole story regarding LLVM # configuration data. # Target sets for which to generate the llvm-targets file TARGETS=( ######################### # Windows ######################### # Windows x86 "i386-unknown-windows" "i686-unknown-windows" "x86_64-unknown-windows" ######################### # Linux ######################### # Linux ARM "arm-unknown-linux-gnueabi" "arm-unknown-linux-gnueabihf" "arm-unknown-linux-musleabihf" "armv6-unknown-linux-gnueabihf" "armv6-unknown-linux-musleabihf" "armv6l-unknown-linux-gnueabihf" "armv6l-unknown-linux-musleabihf" "armv7-unknown-linux-gnueabihf" "armv7-unknown-linux-musleabihf" "armv7a-unknown-linux-gnueabi" "armv7a-unknown-linux-musleabi" "armv7a-unknown-linux-gnueabihf" "armv7a-unknown-linux-musleabihf" "armv7l-unknown-linux-gnueabi" "armv7l-unknown-linux-musleabi" "armv7l-unknown-linux-gnueabihf" "armv7l-unknown-linux-musleabihf" "aarch64-unknown-linux-gnu" "aarch64-unknown-linux-musl" "aarch64-unknown-linux" # Linux x86 "i386-unknown-linux-gnu" "i386-unknown-linux-musl" "i386-unknown-linux" "i686-unknown-linux-gnu" "i686-unknown-linux-musl" "i686-unknown-linux" "x86_64-unknown-linux-gnu" "x86_64-unknown-linux-musl" "x86_64-unknown-linux" # Linux Android "x86_64-unknown-linux-android" "armv7-unknown-linux-androideabi" "aarch64-unknown-linux-android" "armv7a-unknown-linux-androideabi" # Linux ppc64le "powerpc64le-unknown-linux-gnu" "powerpc64le-unknown-linux-musl" "powerpc64le-unknown-linux" # Linux s390x "s390x-ibm-linux" ######################### # Darwin ######################### # macOS "i386-apple-darwin" "x86_64-apple-darwin" "arm64-apple-darwin" # iOS "armv7-apple-ios" "arm64-apple-ios" "i386-apple-ios" "x86_64-apple-ios" ######################### # FreeBSD ######################### # FreeBSD amd64 "amd64-portbld-freebsd" "x86_64-unknown-freebsd" # See #15718 # FreeBSD ARM "aarch64-unknown-freebsd" "armv6-unknown-freebsd-gnueabihf" "armv7-unknown-freebsd-gnueabihf" ######################### # Other ######################### # QNX "arm-unknown-nto-qnx-eabi" ) # given the call to clang -c11 that clang --target -v generates, # parse the -target-cpu and -target-feature from # the output. function get_cpu_and_attr() { # echo $@ while [ "$#" -gt 0 ]; do case "$1" in -target-cpu) CPU=$2; shift 2;; -target-feature) # translate clang to opt/llc target features case "$2" in # we don't have support in GHC for proper soft-float. # if we extend the `llvm-target` file to contain two # additional columns for opt and llc flags, we could # pass -float-abi=soft; However ghc will use float # registers unconditionally on arm, and as such true # soft float with the registerised llvm backend is # currently not possible. +soft-float-abi) shift 2;; *) ATTR+=("$2"); shift 2;; esac ;; *) shift 1;; esac done } # first marker to discriminate the first line being outputted. FST=1 # a dummy file to use for the clang invocation. FILE=_____dummy.c touch $FILE for target in "${TARGETS[@]}"; do # find the cpu and attributes emitted by clang for the given $target CPU="" ATTR=() args=$(clang --target=$target -S $FILE -o /dev/null -v 2>&1 |grep $FILE) get_cpu_and_attr $args # find the data-layout from the llvm code emitted by clang. dl=$(clang --target=$target -S $FILE -emit-llvm -o -|grep datalayout |awk -F\ '{ print $4 }') # GNU and Apple/LLVM can't agree on the aarch64 target. # aarch64-apple-ios, is understood by autotools but not by LLVM. # arm64-apple-ios, is understood by LLVM, but not by autotools. # # therefore, while we query clang with arm64-apple-ios, we put # aarch64-apple-ios into the llvm-target list, as that is what # we have to configure ghc with --target with anyway. Also we # want to retain the GNU naming for compatibility with libraries # that use autotools. if [ "$target" == "arm64-apple-ios" ]; then target="aarch64-apple-ios" fi if [ $FST -eq 1 ]; then echo "[(\"${target}\", ($dl, \"$CPU\", \"${ATTR[*]}\"))" FST=0 else echo ",(\"${target}\", ($dl, \"$CPU\", \"${ATTR[*]}\"))" fi done rm $FILE echo "]"