================
@@ -0,0 +1,25 @@
+// RUN: not %clang -### -c --target=x86_64 -Wa,--crel %s 2>&1 | FileCheck %s
--check-prefix=NOEXP
+
+// NOEXP: error: -Wa,--allow-experimental-crel must be specified to use
-Wa,--crel. CREL is experimental and takes a non-standard section type code
+
+// RUN: %clang -### -c --target=x86_64 -Wa,--crel,--allow-experimental-crel %s
-Werror 2>&1 | FileCheck %s
+// RUN: %clang -### -c --target=x86_64
-Wa,--crel,--no-crel,--allow-experimental-crel %s -Werror 2>&1 | FileCheck %s
--check-prefix=NO
+// RUN: %clang -### -c --target=x86_64 -Wa,--allow-experimental-crel %s
-Werror 2>&1 | FileCheck %s --check-prefix=NO
+// RUN: not %clang -### -c --target=arm64-apple-darwin
-Wa,--crel,--allow-experimental-crel %s 2>&1 | FileCheck %s --check-prefix=ERR
+// RUN: not %clang -### -c --target=mips64
-Wa,--crel,--allow-experimental-crel %s 2>&1 | FileCheck %s --check-prefix=ERR
+
+// RUN: %clang -### -c --target=aarch64 -Werror
-Wa,--crel,--allow-experimental-crel -x assembler %s -Werror 2>&1 | FileCheck
%s --check-prefix=ASM
+// RUN: not %clang -### -c --target=mips64
-Wa,--crel,--allow-experimental-crel -x assembler %s 2>&1 | FileCheck %s
--check-prefix=ERR
+
+// CHECK: "-cc1" {{.*}}"--crel"
+// NO: "-cc1"
+// NO-NOT: "--crel"
+// ASM: "-cc1as" {{.*}}"--crel"
+// ERR: error: unsupported option '-Wa,--crel' for target '{{.*}}'
+
+/// Don't bother with --allow-experimental-crel for LTO.
----------------
MaskRay wrote:
I picked: `The --allow-experimental-crel error check doesn't apply to LTO.`
https://github.com/llvm/llvm-project/pull/97378
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