[ARMv8] Add builtins for CRC instructions.

Patch by Bradley Smith!

llvm-svn: 190931

2 files changed, 74 insertions, 0 deletions

diff --git a/clang/test/CodeGen/arm-crc32.c b/clang/test/CodeGen/arm-crc32.c
new file mode 100644
index 00000000000..d49f20eac74
--- /dev/null
+++ b/clang/test/CodeGen/arm-crc32.c
@@ -0,0 +1,63 @@
+// REQUIRES: arm-registered-target
+// RUN: %clang_cc1 -triple armv8-none-linux-gnueabi \
+// RUN:   -O3 -S -emit-llvm -o - %s | FileCheck %s
+
+int crc32b(int a, char b)
+{
+        return __builtin_arm_crc32b(a,b);
+// CHECK: [[T0:%[0-9]+]] = zext i8 %b to i32
+// CHECK: call i32 @llvm.arm.crc32b(i32 %a, i32 [[T0]])
+}
+
+int crc32cb(int a, char b)
+{
+        return __builtin_arm_crc32cb(a,b);
+// CHECK: [[T0:%[0-9]+]] = zext i8 %b to i32
+// CHECK: call i32 @llvm.arm.crc32cb(i32 %a, i32 [[T0]])
+}
+
+int crc32h(int a, short b)
+{
+        return __builtin_arm_crc32h(a,b);
+// CHECK: [[T0:%[0-9]+]] = zext i16 %b to i32
+// CHECK: call i32 @llvm.arm.crc32h(i32 %a, i32 [[T0]])
+}
+
+int crc32ch(int a, short b)
+{
+        return __builtin_arm_crc32ch(a,b);
+// CHECK: [[T0:%[0-9]+]] = zext i16 %b to i32
+// CHECK: call i32 @llvm.arm.crc32ch(i32 %a, i32 [[T0]])
+}
+
+int crc32w(int a, int b)
+{
+        return __builtin_arm_crc32w(a,b);
+// CHECK: call i32 @llvm.arm.crc32w(i32 %a, i32 %b)
+}
+
+int crc32cw(int a, int b)
+{
+        return __builtin_arm_crc32cw(a,b);
+// CHECK: call i32 @llvm.arm.crc32cw(i32 %a, i32 %b)
+}
+
+int crc32d(int a, long long b)
+{
+        return __builtin_arm_crc32d(a,b);
+// CHECK: [[T0:%[0-9]+]] = trunc i64 %b to i32
+// CHECK: [[T1:%[0-9]+]] = lshr i64 %b, 32
+// CHECK: [[T2:%[0-9]+]] = trunc i64 [[T1]] to i32
+// CHECK: [[T3:%[0-9]+]] = tail call i32 @llvm.arm.crc32w(i32 %a, i32 [[T0]])
+// CHECK: call i32 @llvm.arm.crc32w(i32 [[T3]], i32 [[T2]])
+}
+
+int crc32cd(int a, long long b)
+{
+        return __builtin_arm_crc32cd(a,b);
+// CHECK: [[T0:%[0-9]+]] = trunc i64 %b to i32
+// CHECK: [[T1:%[0-9]+]] = lshr i64 %b, 32
+// CHECK: [[T2:%[0-9]+]] = trunc i64 [[T1]] to i32
+// CHECK: [[T3:%[0-9]+]] = tail call i32 @llvm.arm.crc32cw(i32 %a, i32 [[T0]])
+// CHECK: call i32 @llvm.arm.crc32cw(i32 [[T3]], i32 [[T2]])
+}
diff --git a/clang/test/Preprocessor/arm-target-features.c b/clang/test/Preprocessor/arm-target-features.c
new file mode 100644
index 00000000000..56c893b6b01
--- /dev/null
+++ b/clang/test/Preprocessor/arm-target-features.c
@@ -0,0 +1,11 @@
+// RUN: %clang -target armv8a-none-linux-gnu -x c -E -dM %s -o - | FileCheck %s
+// CHECK: __ARMEL__ 1
+// CHECK: __ARM_ARCH 8
+// CHECK: __ARM_ARCH_8A__ 1
+// CHECK: __ARM_FEATURE_CRC32 1
+
+// RUN: %clang -target armv7a-none-linux-gnu -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-V7 %s
+// CHECK-V7: __ARMEL__ 1
+// CHECK-V7: __ARM_ARCH 7
+// CHECK-V7: __ARM_ARCH_7A__ 1
+// CHECK-NOT-V7: __ARM_FEATURE_CRC32