[clang] [clang][driver] Improve warning message for target AVR (PR #114394)

[Ben Shi via cfe-commits]

https://github.com/benshi001 updated https://github.com/llvm/llvm-project/pull/114394

>From eb74d413d2f5e5dcc520282a5c59893d52222bf5 Mon Sep 17 00:00:00 2001
From: Ben Shi <bennshi at tencent.com>
Date: Thu, 31 Oct 2024 20:06:55 +0800
Subject: [PATCH] [clang][driver] Improve warning message for AVR when no
 '-mmcu' option is used

Fixes https://github.com/llvm/llvm-project/issues/96743
---
 clang/include/clang/Basic/DiagnosticDriverKinds.td | 3 +--
 clang/test/Driver/avr-toolchain.c                  | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/clang/include/clang/Basic/DiagnosticDriverKinds.td b/clang/include/clang/Basic/DiagnosticDriverKinds.td
index 65551bd7761a9d..cdfdaa01fb121d 100644
--- a/clang/include/clang/Basic/DiagnosticDriverKinds.td
+++ b/clang/include/clang/Basic/DiagnosticDriverKinds.td
@@ -37,8 +37,7 @@ def warn_drv_invalid_arch_name_with_suggestion : Warning<
   "ignoring invalid /arch: argument '%0'; for %select{64|32}1-bit expected one of %2">,
   InGroup<UnusedCommandLineArgument>;
 def warn_drv_avr_mcu_not_specified : Warning<
-  "no target microcontroller specified on command line, cannot "
-  "link standard libraries, please pass -mmcu=<mcu name>">,
+  "no target microcontroller specified, please pass -mmcu=<mcu name>">,
   InGroup<AVRRtlibLinkingQuirks>;
 def warn_drv_avr_libc_not_found: Warning<
   "no avr-libc installation can be found on the system, "
diff --git a/clang/test/Driver/avr-toolchain.c b/clang/test/Driver/avr-toolchain.c
index 45ccf890febda8..9d17476f30a698 100644
--- a/clang/test/Driver/avr-toolchain.c
+++ b/clang/test/Driver/avr-toolchain.c
@@ -44,7 +44,7 @@
 // RUN: %clang -### --target=avr --sysroot=%S/Inputs/basic_avr_tree -S %s 2>&1 | FileCheck --check-prefixes=NOMCU,LINKA %s
 // RUN: %clang -### --target=avr --sysroot=%S/Inputs/ -S %s 2>&1 | FileCheck --check-prefixes=NOMCU,LINKA %s
 // RUN: %clang -### --target=avr --sysroot=%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck --check-prefixes=NOMCU,LINKB %s
-// NOMCU: warning: no target microcontroller specified on command line, cannot link standard libraries, please pass -mmcu=<mcu name>
+// NOMCU: warning: no target microcontroller specified, please pass -mmcu=<mcu name>
 // LINKB: warning: standard library not linked and so no interrupt vector table or compiler runtime routines will be linked
 // LINKB: warning: support for passing the data section address to the linker for microcontroller '' is not implemented
 // NOMCU-NOT: warning: {{.*}} avr-gcc