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-rw-r--r--test/Driver/disable-llvm.c22
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diff --git a/test/Driver/disable-llvm.c b/test/Driver/disable-llvm.c
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+// We support a CC1 option for disabling LLVM's passes.
+// RUN: %clang -O2 -Xclang -disable-llvm-passes -### %s 2>&1 \
+// RUN: | FileCheck --check-prefix=DISABLED %s
+// DISABLED: -cc1
+// DISABLED-NOT: -mllvm
+// DISABLED: -disable-llvm-passes
+//
+// We also support two alternative spellings for historical reasons.
+// RUN: %clang -O2 -Xclang -disable-llvm-optzns -### %s 2>&1 \
+// RUN: | FileCheck --check-prefix=DISABLED-LEGACY %s
+// RUN: %clang -O2 -mllvm -disable-llvm-optzns -### %s 2>&1 \
+// RUN: | FileCheck --check-prefix=DISABLED-LEGACY %s
+// DISABLED-LEGACY: -cc1
+// DISABLED-LEGACY-NOT: -mllvm
+// DISABLED-LEGACY: -disable-llvm-optzns
+//
+// The main flag shouldn't be specially handled when used with '-mllvm'.
+// RUN: %clang -O2 -mllvm -disable-llvm-passes -### %s 2>&1 | FileCheck --check-prefix=MLLVM %s
+// MLLVM: -cc1
+// MLLVM-NOT: -disable-llvm-passes
+// MLLVM: "-mllvm" "-disable-llvm-passes"
+// MLLVM-NOT: -disable-llvm-passes