[clang] [hexagon] Enable --eh-frame-hdr (PR #130225)

[Brian Cain via cfe-commits]

https://github.com/androm3da created https://github.com/llvm/llvm-project/pull/130225

The missing `PT_GNU_EH_FRAME` was causing C++ exception handling test failures in llvm-test-suite.  We should unconditionally add this argument like the other drivers do.

Discovered-by: Alexey Karyakin <akaryaki at quicinc.com> 
Fixes: #129745

>From 716e250a1267ee369c04af364a6ec7174940b493 Mon Sep 17 00:00:00 2001
From: Brian Cain <brian.cain at oss.qualcomm.com>
Date: Tue, 4 Mar 2025 18:27:29 -0800
Subject: [PATCH] [hexagon] Enable --eh-frame-hdr

The missing `PT_GNU_EH_FRAME` was causing C++ exception handling test
failures in llvm-test-suite.  We should unconditionally add this
argument like the other drivers do.

Fixes: #129745
---
 clang/lib/Driver/ToolChains/Hexagon.cpp     | 1 +
 clang/test/Driver/hexagon-toolchain-elf.c   | 1 +
 clang/test/Driver/hexagon-toolchain-linux.c | 1 +
 3 files changed, 3 insertions(+)

diff --git a/clang/lib/Driver/ToolChains/Hexagon.cpp b/clang/lib/Driver/ToolChains/Hexagon.cpp
index 7ca5ab9af8810..6ea701a7882d1 100644
--- a/clang/lib/Driver/ToolChains/Hexagon.cpp
+++ b/clang/lib/Driver/ToolChains/Hexagon.cpp
@@ -313,6 +313,7 @@ constructHexagonLinkArgs(Compilation &C, const JobAction &JA,
                                      // handled somewhere else.
   Args.ClaimAllArgs(options::OPT_static_libgcc);
 
+  CmdArgs.push_back("--eh-frame-hdr");
   //----------------------------------------------------------------------------
   //
   //----------------------------------------------------------------------------
diff --git a/clang/test/Driver/hexagon-toolchain-elf.c b/clang/test/Driver/hexagon-toolchain-elf.c
index be812dda40d57..de2ebfeeda26c 100644
--- a/clang/test/Driver/hexagon-toolchain-elf.c
+++ b/clang/test/Driver/hexagon-toolchain-elf.c
@@ -555,6 +555,7 @@
 // RUN:   -ccc-install-dir %S/Inputs/hexagon_tree/Tools/bin \
 // RUN:   -mcpu=hexagonv60 \
 // RUN:   -fuse-ld=lld %s 2>&1 | FileCheck -check-prefix=CHECK382 %s
+// CHECK382:          "--eh-frame-hdr
 // CHECK382-NOT:      "-march=
 // CHECK382-NOT:      "-mcpu=
 // -----------------------------------------------------------------------------
diff --git a/clang/test/Driver/hexagon-toolchain-linux.c b/clang/test/Driver/hexagon-toolchain-linux.c
index 6f7f3b20f9141..e791353cca07f 100644
--- a/clang/test/Driver/hexagon-toolchain-linux.c
+++ b/clang/test/Driver/hexagon-toolchain-linux.c
@@ -127,6 +127,7 @@
 // RUN:    --target=hexagon-unknown-linux-musl %s -### 2>&1 \
 // RUN:    | FileCheck -check-prefix=CHECK011 %s
 // CHECK011:   InstalledDir: [[INSTALLED_DIR:.+]]
+// CHECK011:   "--eh-frame-hdr"
 // CHECK011:   crt1.o
 // CHECK011-NOT:  "-lunwind"
 // CHECK011-NOT:  "-lgcc_eh"