[TargetParser][ARM] Account dependencies when processing target features

Teaches ARM::appendArchExtFeatures to account dependencies when processing
target features: i.e. when you say -march=armv8.1-m.main+mve.fp+nofp it
means mve.fp should get discarded too. (Split from D63936)

Differential Revision: https://reviews.llvm.org/D64048

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@366031 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Preprocessor/arm-target-features.c b/test/Preprocessor/arm-target-features.c
index 95231e2a8125a3e2877fcb2c5ca0102be9668d99..df5af4a933762c460f896472b46bb734a9d9c49a 100644 (file)
--- a/test/Preprocessor/arm-target-features.c
+++ b/test/Preprocessor/arm-target-features.c
@@ -762,12 +762,29 @@
 // CHECK-V81M-MVE: #define __ARM_FEATURE_MVE 1
 // CHECK-V81M-MVE: #define __ARM_FEATURE_SIMD32 1
 
-// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main+mve.fp -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V81M-MVE-FP %s
-// CHECK-V81M-MVE-FP: #define __ARM_FEATURE_DSP 1
-// CHECK-V81M-MVE-FP: #define __ARM_FEATURE_FP16_SCALAR_ARITHMETIC 1
-// CHECK-V81M-MVE-FP: #define __ARM_FEATURE_MVE 3
-// CHECK-V81M-MVE-FP: #define __ARM_FEATURE_SIMD32 1
-// CHECK-V81M-MVE-FP: #define __ARM_FPV5__ 1
+// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main+mve.fp -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V81M-MVEFP %s
+// CHECK-V81M-MVEFP: #define __ARM_FEATURE_DSP 1
+// CHECK-V81M-MVEFP: #define __ARM_FEATURE_FP16_SCALAR_ARITHMETIC 1
+// CHECK-V81M-MVEFP: #define __ARM_FEATURE_MVE 3
+// CHECK-V81M-MVEFP: #define __ARM_FEATURE_SIMD32 1
+// CHECK-V81M-MVEFP: #define __ARM_FPV5__ 1
+
+// nofp discards mve.fp
+// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main+mve.fp+nofp -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V81M-MVEFP-NOFP %s
+// CHECK-V81M-MVEFP-NOFP-NOT: #define __ARM_FEATURE_MVE
+
+// nomve discards mve.fp
+// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main+mve.fp+nomve -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V81M-MVEFP-NOMVE %s
+// CHECK-V81M-MVEFP-NOMVE-NOT: #define __ARM_FEATURE_MVE
+
+// mve+fp doesn't imply mve.fp
+// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main+mve+fp -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V81M-MVE-FP %s
+// CHECK-V81M-MVE-FP: #define __ARM_FEATURE_MVE 1
+
+// nodsp discards both dsp and mve
+// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main+mve+nodsp -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V81M-MVE-NODSP %s
+// CHECK-V81M-MVE-NODSP-NOT: #define __ARM_FEATURE_MVE
+// CHECK-V81M-MVE-NODSP-NOT: #define __ARM_FEATURE_DSP
 
 // RUN: %clang -target armv8.1a-none-none-eabi -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V81A %s
 // CHECK-V81A: #define __ARM_ARCH 8