From: Yonghong Song <yhs@fb.com>
Date: Fri, 15 Jun 2018 15:53:31 +0000 (+0000)
Subject: bpf: recognize target specific option -mattr=dwarfris in clang
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=24e21d766f42fedad88b0a5b8db385bd3ca4ec56;p=clang

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 <yhs@fb.com>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@334839 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Basic/Targets/BPF.h b/lib/Basic/Targets/BPF.h
index 61a7ddae9c..7f97f81891 100644
--- a/lib/Basic/Targets/BPF.h
+++ b/lib/Basic/Targets/BPF.h
@@ -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,