Author: yhs
Date: Fri Jun 15 08:53:31 2018
New Revision: 334839
URL: http://llvm.org/viewvc/llvm-project?rev=334839&view=rev
Log:
bpf: recognize target specific option -mattr=dwarfris in clang
The following is the usage example with clang:
bash-4.2$ clang -target bpf -O2 -g -c -Xclang -target-feature -Xclang
+dwarfris t.c
bash-4.2$ llvm-objdump -S -d t.o
t.o: file format ELF64-BPF
Disassembly of section .text:
test:
; int test(void) {
0: b7 00 00 00 00 00 00 00 r0 = 0
; return 0;
1: 95 00 00 00 00 00 00 00 exit
bash-4.2$ cat t.c
int test(void) {
return 0;
}
bash-4.2$
Signed-off-by: Yonghong Song <y...@fb.com>
Modified:
cfe/trunk/lib/Basic/Targets/BPF.h
Modified: cfe/trunk/lib/Basic/Targets/BPF.h
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/BPF.h?rev=334839&r1=334838&r2=334839&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets/BPF.h (original)
+++ cfe/trunk/lib/Basic/Targets/BPF.h Fri Jun 15 08:53:31 2018
@@ -47,7 +47,7 @@ public:
MacroBuilder &Builder) const override;
bool hasFeature(StringRef Feature) const override {
- return Feature == "bpf" || Feature == "alu32";
+ return Feature == "bpf" || Feature == "alu32" || Feature == "dwarfris";
}
void setFeatureEnabled(llvm::StringMap<bool> &Features, StringRef Name,
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