[llvm] [NFCI][bolt][test] Enable AT&T syntax explicitly (PR #167225)

[Raul Tambre via llvm-commits]

https://github.com/tambry updated https://github.com/llvm/llvm-project/pull/167225

>From a3741eb3cd4c6acf286b8401bc8d91d9a55a1f87 Mon Sep 17 00:00:00 2001
From: Raul Tambre <raul at tambre.ee>
Date: Sun, 9 Nov 2025 15:46:40 +0200
Subject: [PATCH] [NFCI][bolt][test] Use AT&T syntax explicitly

This enables building LLVM with `-mllvm -x86-asm-syntax=intel` in one's
Clang config files (i.e. a global preference for Intel syntax).

`-masm=att` is insufficient as it doesn't override a specification of `-mllvm -x86-asm-syntax`.
---
 bolt/test/lit.local.cfg | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bolt/test/lit.local.cfg b/bolt/test/lit.local.cfg
index 8a61d11f5825f..78cc73e53b680 100644
--- a/bolt/test/lit.local.cfg
+++ b/bolt/test/lit.local.cfg
@@ -5,7 +5,7 @@ if not "linux" in host_triple:
   host_triple = host_triple.split("-")[0] + "-unknown-linux-gnu"
 
 common_linker_flags = "-fuse-ld=lld -Wl,--unresolved-symbols=ignore-all -Wl,--build-id=none -pie"
-flags = f"--target={host_triple} -fPIE {common_linker_flags}"
+flags = f"--target={host_triple} -fPIE {common_linker_flags} -mllvm -x86-asm-syntax=att"
 
 config.substitutions.insert(0, ("%cflags", f"%cflags {flags}"))
 config.substitutions.insert(0, ("%cxxflags", f"%cxxflags {flags}"))