[ARM] add target arch definitions for 8.1-M and MVE

This adds:
- LLVM subtarget features to make all the new instructions conditional on,
- CPU and FPU names for use on clang's command line, with default FPUs set
  so that "armv8.1-m.main+fp" and "armv8.1-m.main+fp.dp" will select the right
  FPU features,
- architecture extension names "mve" and "mve.fp",
- ABI build attribute support for v8.1-M (a new value for Tag_CPU_arch) and MVE
  (a new actual tag).

Patch mostly by Simon Tatham.

Differential Revision: https://reviews.llvm.org/D60698

llvm-svn: 362090

1 files changed, 20 insertions, 0 deletions

diff --git a/llvm/unittests/Support/ARMAttributeParser.cpp b/llvm/unittests/Support/ARMAttributeParser.cpp
index 994011872b9..6781acc59a7 100644
--- a/llvm/unittests/Support/ARMAttributeParser.cpp
+++ b/llvm/unittests/Support/ARMAttributeParser.cpp
@@ -75,6 +75,16 @@ TEST(CPUArchBuildAttr, testBuildAttr) {
                                ARMBuildAttrs::v6S_M));
   EXPECT_TRUE(testBuildAttr(6, 13, ARMBuildAttrs::CPU_arch,
                                ARMBuildAttrs::v7E_M));
+  EXPECT_TRUE(testBuildAttr(6, 14, ARMBuildAttrs::CPU_arch,
+                               ARMBuildAttrs::v8_A));
+  EXPECT_TRUE(testBuildAttr(6, 15, ARMBuildAttrs::CPU_arch,
+                               ARMBuildAttrs::v8_R));
+  EXPECT_TRUE(testBuildAttr(6, 16, ARMBuildAttrs::CPU_arch,
+                               ARMBuildAttrs::v8_M_Base));
+  EXPECT_TRUE(testBuildAttr(6, 17, ARMBuildAttrs::CPU_arch,
+                               ARMBuildAttrs::v8_M_Main));
+  EXPECT_TRUE(testBuildAttr(6, 21, ARMBuildAttrs::CPU_arch,
+                               ARMBuildAttrs::v8_1_M_Main));
 }
 
 TEST(CPUArchProfileBuildAttr, testBuildAttr) {
@@ -159,6 +169,16 @@ TEST(FPHPBuildAttr, testBuildAttr) {
                             ARMBuildAttrs::AllowHPFP));
 }
 
+TEST(MVEBuildAttr, testBuildAttr) {
+  EXPECT_TRUE(testTagString(48, "Tag_MVE_arch"));
+  EXPECT_TRUE(testBuildAttr(48, 0, ARMBuildAttrs::MVE_arch,
+                            ARMBuildAttrs::Not_Allowed));
+  EXPECT_TRUE(testBuildAttr(48, 1, ARMBuildAttrs::MVE_arch,
+                            ARMBuildAttrs::AllowMVEInteger));
+  EXPECT_TRUE(testBuildAttr(48, 2, ARMBuildAttrs::MVE_arch,
+                            ARMBuildAttrs::AllowMVEIntegerAndFloat));
+}
+
 TEST(CPUAlignBuildAttr, testBuildAttr) {
   EXPECT_TRUE(testTagString(34, "Tag_CPU_unaligned_access"));
   EXPECT_TRUE(testBuildAttr(34, 0, ARMBuildAttrs::CPU_unaligned_access,