From 65ad22d969c8ddab46ce3661ca9eeec971c230e0 Mon Sep 17 00:00:00 2001 From: Francis Visoiu Mistrih Date: Mon, 18 Dec 2017 17:38:03 +0000 Subject: [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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320996 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/MIR/X86/escape-function-name.ll | 6 ++++++ 1 file changed, 6 insertions(+) create mode 100644 test/CodeGen/MIR/X86/escape-function-name.ll (limited to 'test/CodeGen') diff --git a/test/CodeGen/MIR/X86/escape-function-name.ll b/test/CodeGen/MIR/X86/escape-function-name.ll new file mode 100644 index 00000000000..8ef687479a1 --- /dev/null +++ b/test/CodeGen/MIR/X86/escape-function-name.ll @@ -0,0 +1,6 @@ +; 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 +} -- cgit v1.2.3