[PATCH] [ARM]: Extend -mfpu options for half-precision and vfpv3xd

[Javed Absar]

Some of the the permissible ARM -mfpu (floating-point hardware) options, which are already supported in GCC, are currently not present in llvm/clang. This patch adds, namely, the options 'neon-fp16', 'vfpv3-fp16', 'vfpv3-d16-fp16', 'vfpv3xd' and 'vfpv3xd-fp16. These options are related to half-precision floating-point and single precision.

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D10764

Files:
  test/Driver/arm-mfpu.c

Index: test/Driver/arm-mfpu.c
===================================================================
--- test/Driver/arm-mfpu.c
+++ test/Driver/arm-mfpu.c
@@ -34,6 +34,17 @@
 // CHECK-VFP3: "-target-feature" "-fp-armv8"
 // CHECK-VFP3: "-target-feature" "-neon"
 
+// RUN: %clang -target arm-linux-eabi -mfpu=vfpv3-fp16 %s -### -o %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-VFP3-FP16 %s
+// CHECK-VFP3-FP16: "-target-feature" "-fp-only-sp"
+// CHECK-VFP3-FP16: "-target-feature" "-d16"
+// CHECK-VFP3-FP16: "-target-feature" "+vfp3"
+// CHECK-VFP3-FP16: "-target-feature" "+fp16"
+// CHECK-VFP3-FP16: "-target-feature" "-vfp4"
+// CHECK-VFP3-FP16: "-target-feature" "-fp-armv8"
+// CHECK-VFP3-FP16: "-target-feature" "-neon"
+// CHECK-VFP3-FP16: "-target-feature" "-crypto"
+
 // RUN: %clang -target arm-linux-eabi -mfpu=vfp3-d16 %s -### -o %t.o 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-VFP3-D16 %s
 // RUN: %clang -target arm-linux-eabi -mfpu=vfpv3-d16 %s -### -o %t.o 2>&1 \
@@ -45,6 +56,39 @@
 // CHECK-VFP3-D16: "-target-feature" "-fp-armv8"
 // CHECK-VFP3-D16: "-target-feature" "-neon"
 
+// RUN: %clang -target arm-linux-eabi -mfpu=vfpv3-d16-fp16 %s -### -o %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-VFP3-D16-FP16 %s
+// CHECK-VFP3-D16-FP16: "-target-feature" "-fp-only-sp"
+// CHECK-VFP3-D16-FP16: "-target-feature" "+d16"
+// CHECK-VFP3-D16-FP16: "-target-feature" "+vfp3"
+// CHECK-VFP3-D16-FP16: "-target-feature" "+fp16"
+// CHECK-VFP3-D16-FP16: "-target-feature" "-vfp4"
+// CHECK-VFP3-D16-FP16: "-target-feature" "-fp-armv8"
+// CHECK-VFP3-D16-FP16: "-target-feature" "-neon"
+// CHECK-VFP3-D16-FP16: "-target-feature" "-crypto"
+
+// RUN: %clang -target arm-linux-eabi -mfpu=vfpv3xd %s -### -o %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-VFP3XD %s
+// CHECK-VFP3XD: "-target-feature" "+fp-only-sp"
+// CHECK-VFP3XD: "-target-feature" "+d16"
+// CHECK-VFP3XD: "-target-feature" "+vfp3"
+// CHECK-VFP3XD: "-target-feature" "-fp16"
+// CHECK-VFP3XD: "-target-feature" "-vfp4"
+// CHECK-VFP3XD: "-target-feature" "-fp-armv8"
+// CHECK-VFP3XD: "-target-feature" "-neon"
+// CHECK-VFP3XD: "-target-feature" "-crypto"
+
+// RUN: %clang -target arm-linux-eabi -mfpu=vfpv3xd-fp16 %s -### -o %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-VFP3XD-FP16 %s
+// CHECK-VFP3XD-FP16: "-target-feature" "+fp-only-sp"
+// CHECK-VFP3XD-FP16: "-target-feature" "+d16"
+// CHECK-VFP3XD-FP16: "-target-feature" "+vfp3"
+// CHECK-VFP3XD-FP16: "-target-feature" "+fp16"
+// CHECK-VFP3XD-FP16: "-target-feature" "-vfp4"
+// CHECK-VFP3XD-FP16: "-target-feature" "-fp-armv8"
+// CHECK-VFP3XD-FP16: "-target-feature" "-neon"
+// CHECK-VFP3XD-FP16: "-target-feature" "-crypto"
+
 // RUN: %clang -target arm-linux-eabi -mfpu=vfp4 %s -### -o %t.o 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-VFP4 %s
 // RUN: %clang -target arm-linux-eabi -mfpu=vfpv4 %s -### -o %t.o 2>&1 \
@@ -97,6 +141,17 @@
 // RUN:   | FileCheck --check-prefix=CHECK-NEON %s
 // CHECK-NEON: "-target-feature" "+neon"
 
+// RUN: %clang -target arm-linux-eabi -mfpu=neon-fp16 %s -### -o %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-NEON-FP16 %s
+// CHECK-NEON-FP16: "-target-feature" "-fp-only-sp"
+// CHECK-NEON-FP16: "-target-feature" "-d16"
+// CHECK-NEON-FP16: "-target-feature" "+vfp3"
+// CHECK-NEON-FP16: "-target-feature" "+fp16"
+// CHECK-NEON-FP16: "-target-feature" "-vfp4"
+// CHECK-NEON-FP16: "-target-feature" "-fp-armv8"
+// CHECK-NEON-FP16: "-target-feature" "+neon"
+// CHECK-NEON-FP16: "-target-feature" "-crypto"
+
 // RUN: %clang -target arm-linux-eabi -mfpu=neon-vfpv3 %s -### -o %t.o 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NEON-VFPV3 %s
 // CHECK-NEON-VFPV3: "-target-feature" "+neon"

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