commit 4ea248eb56cc156aac178d3e7db158f77c4eecf1
author Sjoerd Meijer <sjoerd.meijer@arm.com> Fri Jun 07 15:20:56 2019 +0000
committer Sjoerd Meijer <sjoerd.meijer@arm.com> Fri Jun 07 15:20:56 2019 +0000
tree eeb93f7b0c0ac50ff3e8e8763f42ef894c93f642
parent 7aafdef62711c4da98a622658152aaed43d49696

[ARM] Add ACLE feature macros for MVE

If MVE is present at all, then the macro __ARM_FEATURE_MVE is defined
to a value which has bit 0 set for integer MVE, and bit 1 set for
floating-point MVE.

(Floating-point MVE implies integer MVE, so if this macro is defined
at all then it will be set to 1 or 3, never 2.)

Patch mostly by Simon Tatham

Differential Revision: https://reviews.llvm.org/D60710

llvm-svn: 362806

clang/lib/Basic/Targets/ARM.cpp

diff --git a/clang/lib/Basic/Targets/ARM.cpp b/clang/lib/Basic/Targets/ARM.cpp
index 259aded..d9028f8 100644
--- a/clang/lib/Basic/Targets/ARM.cpp
+++ b/clang/lib/Basic/Targets/ARM.cpp
@@ -146,6 +146,14 @@
   }
 }
 
+bool ARMTargetInfo::hasMVE() const {
+  return ArchKind == llvm::ARM::ArchKind::ARMV8_1MMainline && MVE != 0;
+}
+
+bool ARMTargetInfo::hasMVEFloat() const {
+  return hasMVE() && (MVE & MVE_FP);
+}
+
 bool ARMTargetInfo::isThumb() const {
   return ArchISA == llvm::ARM::ISAKind::THUMB;
 }
@@ -460,6 +468,15 @@
       HasLegalHalfType = true;
     } else if (Feature == "+dotprod") {
       DotProd = true;
+    } else if (Feature == "+mve") {
+      DSP = 1;
+      MVE |= MVE_INT;
+    } else if (Feature == "+mve.fp") {
+      DSP = 1;
+      HasLegalHalfType = true;
+      FPU |= FPARMV8;
+      MVE |= MVE_INT | MVE_FP;
+      HW_FP |= HW_FP_SP | HW_FP_HP;
     }
   }
 
@@ -510,6 +527,7 @@
       .Case("vfp", FPU && !SoftFloat)
       .Case("hwdiv", HWDiv & HWDivThumb)
       .Case("hwdiv-arm", HWDiv & HWDivARM)
+      .Case("mve", hasMVE())
       .Default(false);
 }
 
@@ -725,6 +743,10 @@
                         "0x" + Twine::utohexstr(HW_FP & ~HW_FP_DP));
   }
 
+  if (hasMVE()) {
+    Builder.defineMacro("__ARM_FEATURE_MVE", hasMVEFloat() ? "3" : "1");
+  }
+
   Builder.defineMacro("__ARM_SIZEOF_WCHAR_T",
                       Twine(Opts.WCharSize ? Opts.WCharSize : 4));