Add few clang compiler alias for BPF target (#4543)

Add 3 latest clang version aliases + trunk to BPF target.
Use `llvm-objdump` for clang compilers and binutils' one for the GCC compiler (unfortunately, this can't be changed by the user in the UI).

refs #4408

etc/config/c++.amazon.properties

@@ -872,7 +872,31 @@ group.cross.licensePreamble=Copyright (c) 2007 Free Software Foundation, Inc. <a
 
 ###############################
 # Cross for BPF
-group.bpf.compilers=&gccbpf
+group.bpf.compilers=&gccbpf:&clangbpf
+group.bpf.demangler=/opt/compiler-explorer/bpf/gcc-trunk/bpf-unknown-none/bin/bpf-unknown-none-c++filt
+
+# Clang for BPF
+group.clangbpf.compilers=bpfclangtrunk:bpfclang1500:bpfclang1400:bpfclang1300
+group.clangbpf.supportsBinary=true
+group.clangbpf.supportsExecute=false
+group.clangbpf.baseName=BPF CLANG
+group.clangbpf.groupName=BPF CLANG
+group.clangbpf.isSemVer=true
+group.clangbpf.options=-target bpf
+group.clangbpf.objdumper=/opt/compiler-explorer/clang-trunk/bin/llvm-objdump
+group.clangbpf.objdumperType=llvm
+
+compiler.bpfclangtrunk.exe=/opt/compiler-explorer/clang-trunk/bin/clang
+compiler.bpfclangtrunk.semver=(trunk)
+
+compiler.bpfclang1500.exe=/opt/compiler-explorer/clang-15.0.0/bin/clang
+compiler.bpfclang1500.semver=15.0.0
+
+compiler.bpfclang1400.exe=/opt/compiler-explorer/clang-14.0.0/bin/clang
+compiler.bpfclang1400.semver=14.0.0
+
+compiler.bpfclang1300.exe=/opt/compiler-explorer/clang-13.0.0/bin/clang
+compiler.bpfclang1300.semver=13.0.0
 
 # GCC for BPF
 group.gccbpf.compilers=bpfgtrunk
@@ -881,11 +905,10 @@ group.gccbpf.supportsExecute=false
 group.gccbpf.baseName=BPF gcc
 group.gccbpf.groupName=BPF GCC
 group.gccbpf.isSemVer=true
+group.gccbpf.objdumper=/opt/compiler-explorer/bpf/gcc-trunk/bpf-unknown-none/bin/bpf-unknown-objdump
 
 compiler.bpfgtrunk.exe=/opt/compiler-explorer/bpf/gcc-trunk/bpf-unknown-none/bin/bpf-unknown-none-g++
 compiler.bpfgtrunk.semver=trunk
-compiler.bpfgtrunk.objdumper=/opt/compiler-explorer/bpf/gcc-trunk/bpf-unknown-none/bin/bpf-unknown-objdump
-compiler.bpfgtrunk.demangler=/opt/compiler-explorer/bpf/gcc-trunk/bpf-unknown-none/bin/bpf-unknown-none-c++filt
 
 ###############################
 # Cross for SPARC

etc/config/c.amazon.properties

@@ -809,7 +809,31 @@ group.ccross.licensePreamble=Copyright (c) 2007 Free Software Foundation, Inc. <
 
 ###############################
 # Cross for BPF
-group.cbpf.compilers=&cgccbpf
+group.cbpf.compilers=&cgccbpf:&cclangbpf
+group.cbpf.demangler=/opt/compiler-explorer/bpf/gcc-trunk/bpf-unknown-none/bin/bpf-unknown-none-c++filt
+
+# Clang for BPF
+group.cclangbpf.compilers=cbpfclangtrunk:cbpfclang1500:cbpfclang1400:cbpfclang1300
+group.cclangbpf.supportsBinary=true
+group.cclangbpf.supportsExecute=false
+group.cclangbpf.baseName=BPF CLANG
+group.cclangbpf.groupName=BPF CLANG
+group.cclangbpf.isSemVer=true
+group.cclangbpf.options=-target bpf
+group.cclangbpf.objdumper=/opt/compiler-explorer/clang-trunk/bin/llvm-objdump
+group.cclangbpf.objdumperType=llvm
+
+compiler.cbpfclangtrunk.exe=/opt/compiler-explorer/clang-trunk/bin/clang
+compiler.cbpfclangtrunk.semver=(trunk)
+
+compiler.cbpfclang1500.exe=/opt/compiler-explorer/clang-15.0.0/bin/clang
+compiler.cbpfclang1500.semver=15.0.0
+
+compiler.cbpfclang1400.exe=/opt/compiler-explorer/clang-14.0.0/bin/clang
+compiler.cbpfclang1400.semver=14.0.0
+
+compiler.cbpfclang1300.exe=/opt/compiler-explorer/clang-13.0.0/bin/clang
+compiler.cbpfclang1300.semver=13.0.0
 
 # GCC for BPF
 group.cgccbpf.compilers=cbpfgtrunk
@@ -818,6 +842,7 @@ group.cgccbpf.supportsExecute=false
 group.cgccbpf.baseName=BPF gcc
 group.cgccbpf.groupName=BPF GCC
 group.cgccbpf.isSemVer=true
+group.cgccbpf.objdumper=/opt/compiler-explorer/bpf/gcc-trunk/bpf-unknown-none/bin/bpf-unknown-objdump
 
 compiler.cbpfgtrunk.exe=/opt/compiler-explorer/bpf/gcc-trunk/bpf-unknown-none/bin/bpf-unknown-gcc
 compiler.cbpfgtrunk.semver=trunk