Allow case-insensitive values for -march for AArch64 target in line with GCC.

GCC allows case-insensitive values for -mcpu, -march and -mtune options.
This patch implements the same behaviour for the -march option for the AArch64 target.

llvm-svn: 240019

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index cef67d4..c8a1019 100644 (file)
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1848,7 +1848,8 @@ static bool
 getAArch64ArchFeaturesFromMarch(const Driver &D, StringRef March,
                                 const ArgList &Args,
                                 std::vector<const char *> &Features) {
-  std::pair<StringRef, StringRef> Split = March.split("+");
+  std::string MarchLowerCase = March.lower();
+  std::pair<StringRef, StringRef> Split = StringRef(MarchLowerCase).split("+");
 
   if (Split.first == "armv8-a" ||
       Split.first == "armv8a") {

diff --git a/clang/test/Driver/aarch64-cpus.c b/clang/test/Driver/aarch64-cpus.c
index fcefdef..4d4e1bc 100644 (file)
--- a/clang/test/Driver/aarch64-cpus.c
+++ b/clang/test/Driver/aarch64-cpus.c
@@ -109,6 +109,13 @@
 // RUN: %clang -target aarch64 -mbig-endian -march=armv8.1-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
 // RUN: %clang -target aarch64_be -mbig-endian -march=armv8.1a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
 // RUN: %clang -target aarch64_be -mbig-endian -march=armv8.1-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
+// ================== Check whether -march accepts mixed-case values.
+// RUN: %clang -target aarch64_be -march=ARMV8.1A -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
+// RUN: %clang -target aarch64_be -march=ARMV8.1-A -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
+// RUN: %clang -target aarch64 -mbig-endian -march=Armv8.1A -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
+// RUN: %clang -target aarch64 -mbig-endian -march=Armv8.1-A -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
+// RUN: %clang -target aarch64_be -mbig-endian -march=ARMv8.1a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
+// RUN: %clang -target aarch64_be -mbig-endian -march=ARMV8.1-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV81A-BE %s
 // GENERICV81A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v8.1a"
 
 // ================== Check whether -mcpu accepts mixed-case values.

diff --git a/clang/test/Preprocessor/aarch64-target-features.c b/clang/test/Preprocessor/aarch64-target-features.c
index a55b151..eea72b3 100644 (file)
--- a/clang/test/Preprocessor/aarch64-target-features.c
+++ b/clang/test/Preprocessor/aarch64-target-features.c
@@ -119,6 +119,10 @@
 // RUN: %clang -target aarch64 -march=armv8.1a+crypto -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V81A-FEATURE-1 %s
 // RUN: %clang -target aarch64 -march=armv8.1a+nocrypto -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V81A-FEATURE-2 %s
 // RUN: %clang -target aarch64 -march=armv8.1a+nosimd -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V81A-FEATURE-3 %s
+// ================== Check whether -march accepts mixed-case features.
+// RUN: %clang -target aarch64 -march=ARMV8.1A+CRYPTO -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V81A-FEATURE-1 %s
+// RUN: %clang -target aarch64 -march=Armv8.1a+NOcrypto -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V81A-FEATURE-2 %s
+// RUN: %clang -target aarch64 -march=armv8.1a+noSIMD -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V81A-FEATURE-3 %s
 // CHECK-V81A-FEATURE-1: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+neon" "-target-feature" "+v8.1a" "-target-feature" "+crypto"
 // CHECK-V81A-FEATURE-2: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+neon" "-target-feature" "+v8.1a" "-target-feature" "-crypto"
 // CHECK-V81A-FEATURE-3: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+v8.1a" "-target-feature" "-neon"