[ARM] add support for Cortex-R4/R4F

Adds ARM Cortex-R4 and R4F support and tests in Clang. Though Cortex-R4
support was present, the support for hwdiv in thumb-mode was not defined
or tested properly. This has also been added.

llvm-svn: 234488

5 files changed, 31 insertions, 5 deletions

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index fb2588622c1..6d6a5d77e8b 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -4092,7 +4092,7 @@ public:
       Features["hwdiv"] = true;
       Features["hwdiv-arm"] = true;
     } else if (CPU == "cortex-m3" || CPU == "cortex-m4" || CPU == "cortex-m7" ||
-               CPU == "sc300") {
+               CPU == "sc300" || CPU == "cortex-r4" || CPU == "cortex-r4f") {
       Features["hwdiv"] = true;
     }
   }
@@ -4191,7 +4191,7 @@ public:
         .Cases("cortex-a5", "cortex-a7", "cortex-a8", "7A")
         .Cases("cortex-a9", "cortex-a12", "cortex-a15", "cortex-a17", "krait",
                "7A")
-        .Cases("cortex-r4", "cortex-r5", "cortex-r7", "7R")
+        .Cases("cortex-r4", "cortex-r4f", "cortex-r5", "cortex-r7", "7R")
         .Case("swift", "7S")
         .Case("cyclone", "8A")
         .Cases("sc300", "cortex-m3", "7M")
@@ -4208,7 +4208,7 @@ public:
         .Cases("cortex-a53", "cortex-a57", "cortex-a72", "A")
         .Cases("cortex-m3", "cortex-m4", "cortex-m0", "cortex-m0plus", "M")
         .Cases("cortex-m1", "cortex-m7", "sc000", "sc300", "M")
-        .Cases("cortex-r4", "cortex-r5", "cortex-r7", "R")
+        .Cases("cortex-r4",  "cortex-r4f", "cortex-r5", "cortex-r7", "R")
         .Default("");
   }
   bool setCPU(const std::string &Name) override {
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index 02641fb6440..9864d19e346 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -135,7 +135,7 @@ static const char *GetArmArchForMCpu(StringRef Value) {
     .Cases("sc000", "cortex-m0", "cortex-m0plus", "cortex-m1", "armv6m")
     .Cases("cortex-a5", "cortex-a7", "cortex-a8", "armv7")
     .Cases("cortex-a9", "cortex-a12", "cortex-a15", "cortex-a17", "krait", "armv7")
-    .Cases("cortex-r4", "cortex-r5", "cortex-r7", "armv7r")
+    .Cases("cortex-r4", "cortex-r4f", "cortex-r5", "cortex-r7", "armv7r")
     .Cases("sc300", "cortex-m3", "armv7m")
     .Cases("cortex-m4", "cortex-m7", "armv7em")
     .Case("swift", "armv7s")
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 7b661a7c886..f0fc574bd01 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -5606,7 +5606,7 @@ const char *arm::getLLVMArchSuffixForARM(StringRef CPU) {
     .Cases("arm1156t2-s",  "arm1156t2f-s", "v6t2")
     .Cases("cortex-a5", "cortex-a7", "cortex-a8", "v7")
     .Cases("cortex-a9", "cortex-a12", "cortex-a15", "cortex-a17", "krait", "v7")
-    .Cases("cortex-r4", "cortex-r5", "cortex-r7", "v7r")
+    .Cases("cortex-r4", "cortex-r4f", "cortex-r5", "cortex-r7", "v7r")
     .Cases("sc000", "cortex-m0", "cortex-m0plus", "cortex-m1", "v6m")
     .Cases("sc300", "cortex-m3", "v7m")
     .Cases("cortex-m4", "cortex-m7", "v7em")
diff --git a/clang/test/Driver/arm-cortex-cpus.c b/clang/test/Driver/arm-cortex-cpus.c
index 2d6c7e6898b..7810bdd9711 100644
--- a/clang/test/Driver/arm-cortex-cpus.c
+++ b/clang/test/Driver/arm-cortex-cpus.c
@@ -281,33 +281,41 @@
 // CHECK-BE-CPUV7EM: "-cc1"{{.*}} "-triple" "thumbebv7em-{{.*}}
 
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R %s
+// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4f -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r5 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r7 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4 -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R %s
+// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4f -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r5 -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r7 -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R %s
 // CHECK-CPUV7R: "-cc1"{{.*}} "-triple" "armv7r-{{.*}}
 
 // RUN: %clang -target armeb-linux-gnueabi -mcpu=cortex-r4 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R %s
+// RUN: %clang -target armeb-linux-gnueabi -mcpu=cortex-r4f -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R %s
 // RUN: %clang -target armeb-linux-gnueabi -mcpu=cortex-r5 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R %s
 // RUN: %clang -target armeb-linux-gnueabi -mcpu=cortex-r7 -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R %s
+// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4f -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r5 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r7 -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R %s
 // CHECK-BE-CPUV7R: "-cc1"{{.*}} "-triple" "armebv7r-{{.*}}
 
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R-THUMB %s
+// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4f -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R-THUMB %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r5 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R-THUMB %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r7 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R-THUMB %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4 -mlittle-endian -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R-THUMB %s
+// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4f -mlittle-endian -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R-THUMB %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r5 -mlittle-endian -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R-THUMB %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r7 -mlittle-endian -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV7R-THUMB %s
 // CHECK-CPUV7R-THUMB: "-cc1"{{.*}} "-triple" "thumbv7r-{{.*}}
 
 // RUN: %clang -target armeb-linux-gnueabi -mcpu=cortex-r4 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R-THUMB %s
+// RUN: %clang -target armeb-linux-gnueabi -mcpu=cortex-r4f -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R-THUMB %s
 // RUN: %clang -target armeb-linux-gnueabi -mcpu=cortex-r5 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R-THUMB %s
 // RUN: %clang -target armeb-linux-gnueabi -mcpu=cortex-r7 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R-THUMB %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4 -mbig-endian -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R-THUMB %s
+// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r4f -mbig-endian -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R-THUMB %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r5 -mbig-endian -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R-THUMB %s
 // RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-r7 -mbig-endian -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-CPUV7R-THUMB %s
 // CHECK-BE-CPUV7R-THUMB: "-cc1"{{.*}} "-triple" "thumbebv7r-{{.*}}
diff --git a/clang/test/Preprocessor/arm-target-features.c b/clang/test/Preprocessor/arm-target-features.c
index 926a7534c92..b16b744f8ee 100644
--- a/clang/test/Preprocessor/arm-target-features.c
+++ b/clang/test/Preprocessor/arm-target-features.c
@@ -264,6 +264,24 @@
 // A53-THUMB:#define __ARM_ARCH_EXT_IDIV__ 1
 // A53-THUMB:#define __ARM_FEATURE_DSP
 
+// Test whether predefines are as expected when targeting cortex-r4.
+// RUN: %clang -target armv7 -mcpu=cortex-r4 -x c -E -dM %s -o - | FileCheck --check-prefix=R4-ARM %s
+// R4-ARM-NOT:#define __ARM_ARCH_EXT_IDIV__
+// R4-ARM:#define __ARM_FEATURE_DSP
+
+// RUN: %clang -target armv7 -mthumb -mcpu=cortex-r4 -x c -E -dM %s -o - | FileCheck --check-prefix=R4-THUMB %s
+// R4-THUMB:#define __ARM_ARCH_EXT_IDIV__ 1
+// R4-THUMB:#define __ARM_FEATURE_DSP
+
+// Test whether predefines are as expected when targeting cortex-r4f.
+// RUN: %clang -target armv7 -mcpu=cortex-r4f -x c -E -dM %s -o - | FileCheck --check-prefix=R4F-ARM %s
+// R4F-ARM-NOT:#define __ARM_ARCH_EXT_IDIV__
+// R4F-ARM:#define __ARM_FEATURE_DSP
+
+// RUN: %clang -target armv7 -mthumb -mcpu=cortex-r4f -x c -E -dM %s -o - | FileCheck --check-prefix=R4F-THUMB %s
+// R4F-THUMBT:#define __ARM_ARCH_EXT_IDIV__ 1
+// R4F-THUMB:#define __ARM_FEATURE_DSP
+
 // Test whether predefines are as expected when targeting cortex-r5.
 // RUN: %clang -target armv7 -mcpu=cortex-r5 -x c -E -dM %s -o - | FileCheck --check-prefix=R5-ARM %s
 // R5-ARM:#define __ARM_ARCH_EXT_IDIV__ 1