[BPF] support indirect branch (callx) in AsmParser
Simply mark `callx` as a valid ID, so it can be recognized.
Previously this valid asm triggers an error:
# clang local/callx.s -target bpf
local/callx.s:8:2: error: invalid register/token name
callx r1
^
diff --git a/llvm/lib/Target/BPF/AsmParser/BPFAsmParser.cpp b/llvm/lib/Target/BPF/AsmParser/BPFAsmParser.cpp
index 90697c6..0d1eef6 100644
--- a/llvm/lib/Target/BPF/AsmParser/BPFAsmParser.cpp
+++ b/llvm/lib/Target/BPF/AsmParser/BPFAsmParser.cpp
@@ -229,6 +229,7 @@
return StringSwitch<bool>(Name.lower())
.Case("if", true)
.Case("call", true)
+ .Case("callx", true)
.Case("goto", true)
.Case("gotol", true)
.Case("*", true)
diff --git a/llvm/test/MC/BPF/callx.s b/llvm/test/MC/BPF/callx.s
new file mode 100644
index 0000000..1c53af9
--- /dev/null
+++ b/llvm/test/MC/BPF/callx.s
@@ -0,0 +1,4 @@
+# RUN: llvm-mc -triple bpfel -show-encoding < %s | FileCheck %s
+
+# CHECK: callx r1 # encoding: [0x8d,0x00,0x00,0x00,0x01,0x00,0x00,0x00]
+callx r1
