llvm-project/llvm/test/CodeGen/MIR/X86/escape-function-name.ll

; RUN: llc -mtriple=x86_64-unknown-unknown -stop-after branch-folder -o - %s 2>&1 | FileCheck %s

define void @"\01?f@@YAXXZ"() {
; CHECK: name: "\x01?f@@YAXXZ"
  ret void
}
[YAML] Add support for non-printable characters LLVM IR function names which disable mangling start with '\01' (https://www.llvm.org/docs/LangRef.html#identifiers). When an identifier like "\01@abc@" gets dumped to MIR, it is quoted, but only with single quotes. http://www.yaml.org/spec/1.2/spec.html#id2770814: "The allowed character range explicitly excludes the C0 control block allowed), the surrogate block #xD800-#xDFFF, #xFFFE, and #xFFFF." http://www.yaml.org/spec/1.2/spec.html#id2776092: "All non-printable characters must be escaped. [...] Note that escape sequences are only interpreted in double-quoted scalars." This patch adds support for printing escaped non-printable characters between double quotes if needed. Should also fix PR31743. Differential Revision: https://reviews.llvm.org/D41290 llvm-svn: 320996 2017-12-19 01:38:03 +08:00			`; RUN: llc -mtriple=x86_64-unknown-unknown -stop-after branch-folder -o - %s 2>&1 \| FileCheck %s`

			`define void @"\01?f@@YAXXZ"() {`
			`; CHECK: name: "\x01?f@@YAXXZ"`
			`ret void`
			`}`