[clang] [clang][Driver] Enable -fsanitize=type for Hexagon Linux (PR #191604)

[Brian Cain via cfe-commits]

https://github.com/androm3da updated https://github.com/llvm/llvm-project/pull/191604

>From e6ae80592a73dea346b177a247c14975e0966e8b Mon Sep 17 00:00:00 2001
From: Brian Cain <brian.cain at oss.qualcomm.com>
Date: Fri, 10 Apr 2026 21:50:54 -0700
Subject: [PATCH 1/2] [clang][Driver] Enable -fsanitize=type for Hexagon Linux

Allow the TypeSanitizer to be used on Hexagon Linux targets.
---
 clang/lib/Driver/ToolChains/Linux.cpp |  2 +-
 clang/test/Driver/sanitizer-ld.c      | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Driver/ToolChains/Linux.cpp b/clang/lib/Driver/ToolChains/Linux.cpp
index bde99a3dac860..ffbfded75db3e 100644
--- a/clang/lib/Driver/ToolChains/Linux.cpp
+++ b/clang/lib/Driver/ToolChains/Linux.cpp
@@ -961,7 +961,7 @@ SanitizerMask Linux::getSupportedSanitizers() const {
   if (IsX86_64 || IsMIPS64 || IsAArch64 || IsPowerPC64 || IsSystemZ ||
       IsLoongArch64 || IsRISCV64)
     Res |= SanitizerKind::Thread;
-  if (IsX86_64 || IsAArch64 || IsSystemZ)
+  if (IsX86_64 || IsAArch64 || IsSystemZ || IsHexagon)
     Res |= SanitizerKind::Type;
   if (IsX86_64 || IsSystemZ || IsPowerPC64)
     Res |= SanitizerKind::KernelMemory;
diff --git a/clang/test/Driver/sanitizer-ld.c b/clang/test/Driver/sanitizer-ld.c
index 53a138e31b801..02665fe21296a 100644
--- a/clang/test/Driver/sanitizer-ld.c
+++ b/clang/test/Driver/sanitizer-ld.c
@@ -372,6 +372,16 @@
 // CHECK-TYSAN-DARWIN-CXX: libclang_rt.tysan_osx_dynamic.dylib
 // CHECK-TYSAN-DARWIN-CXX-NOT: -lc++abi
 
+// RUN: %clang %s -### -o %t.o 2>&1 \
+// RUN:     --target=hexagon-unknown-linux-musl -fuse-ld=ld \
+// RUN:     -fsanitize=type \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
+// RUN:     --sysroot=%S/Inputs/basic_linux_tree \
+// RUN:   | %{filecheck} --check-prefix=CHECK-TYSAN-HEXAGON
+//
+// CHECK-TYSAN-HEXAGON: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
+// CHECK-TYSAN-HEXAGON: "--whole-archive" "{{.*}}libclang_rt.tysan{{[^.]*}}.a" "--no-whole-archive"
+
 // RUN: %clangxx -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -fuse-ld=ld -stdlib=platform -lstdc++ \
 // RUN:     -fsanitize=thread \

>From f21538d652064b8da8a9ff3fd9e2a19a293c0d51 Mon Sep 17 00:00:00 2001
From: Brian Cain <brian.cain at oss.qualcomm.com>
Date: Sat, 11 Apr 2026 08:33:09 -0700
Subject: [PATCH 2/2] fixup! [clang][Driver] Enable -fsanitize=type for Hexagon
 Linux

fixup! [clang][Driver] Enable -fsanitize=type for Hexagon Linux

Fix linker name pattern in test: Hexagon uses ld.lld, not plain ld.
---
 clang/test/Driver/sanitizer-ld.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/test/Driver/sanitizer-ld.c b/clang/test/Driver/sanitizer-ld.c
index 02665fe21296a..90fd66ca45bf7 100644
--- a/clang/test/Driver/sanitizer-ld.c
+++ b/clang/test/Driver/sanitizer-ld.c
@@ -379,7 +379,7 @@
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | %{filecheck} --check-prefix=CHECK-TYSAN-HEXAGON
 //
-// CHECK-TYSAN-HEXAGON: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
+// CHECK-TYSAN-HEXAGON: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.lld)?(.exe)?}}"
 // CHECK-TYSAN-HEXAGON: "--whole-archive" "{{.*}}libclang_rt.tysan{{[^.]*}}.a" "--no-whole-archive"
 
 // RUN: %clangxx -### %s 2>&1 \