From a1b62273f8cb823e74e7b67685c0c681efb8ff9d Mon Sep 17 00:00:00 2001
From: Simon Atanasyan <satanasyan@mips.com>
Date: Thu, 5 Jul 2012 20:16:22 +0000
Subject: [PATCH] MIPS: Define __mips_dsp_rev / __mips_dspr2 /  __mips_dsp
 macros if -mdsp or -mdspr2 options are provided.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159774 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Basic/Targets.cpp    | 23 +++++++++++++++++++++++
 test/Preprocessor/init.c | 14 ++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 42f5d63cc3..94d664d3b6 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -3603,6 +3603,9 @@ class MipsTargetInfoBase : public TargetInfo {
   enum MipsFloatABI {
     HardFloat, SingleFloat, SoftFloat
   } FloatABI;
+  enum DspRevEnum {
+    NoDSP, DSP1, DSP2
+  } DspRev;
 
 protected:
   std::string ABI;
@@ -3615,6 +3618,7 @@ public:
       CPU(CPUStr),
       IsMips16(false),
       FloatABI(HardFloat),
+      DspRev(NoDSP),
       ABI(ABIStr)
   {}
 
@@ -3648,6 +3652,20 @@ public:
     if (IsMips16)
       Builder.defineMacro("__mips16", Twine(1));
 
+    switch (DspRev) {
+    default:
+      break;
+    case DSP1:
+      Builder.defineMacro("__mips_dsp_rev", Twine(1));
+      Builder.defineMacro("__mips_dsp", Twine(1));
+      break;
+    case DSP2:
+      Builder.defineMacro("__mips_dsp_rev", Twine(2));
+      Builder.defineMacro("__mips_dspr2", Twine(1));
+      Builder.defineMacro("__mips_dsp", Twine(1));
+      break;
+    }
+
     Builder.defineMacro("_MIPS_SZPTR", Twine(getPointerWidth(0)));
     Builder.defineMacro("_MIPS_SZINT", Twine(getIntWidth()));
     Builder.defineMacro("_MIPS_SZLONG", Twine(getLongWidth()));
@@ -3729,6 +3747,7 @@ public:
   virtual void HandleTargetFeatures(std::vector<std::string> &Features) {
     IsMips16 = false;
     FloatABI = HardFloat;
+    DspRev = NoDSP;
 
     for (std::vector<std::string>::iterator it = Features.begin(),
          ie = Features.end(); it != ie; ++it) {
@@ -3738,6 +3757,10 @@ public:
         FloatABI = SoftFloat;
       else if (*it == "+mips16")
         IsMips16 = true;
+      else if (*it == "+dsp")
+        DspRev = std::max(DspRev, DSP1);
+      else if (*it == "+dspr2")
+        DspRev = std::max(DspRev, DSP2);
     }
 
     // Remove front-end specific option.
diff --git a/test/Preprocessor/init.c b/test/Preprocessor/init.c
index 29ad682827..83028b7dac 100644
--- a/test/Preprocessor/init.c
+++ b/test/Preprocessor/init.c
@@ -888,6 +888,20 @@
 // RUN:   | FileCheck -check-prefix NOMIPS16 %s
 // NOMIPS16-NOT:#define __mips16 1
 //
+// RUN: %clang_cc1 -target-feature +dsp \
+// RUN:   -E -dM -triple=mips-none-none < /dev/null \
+// RUN:   | FileCheck -check-prefix MIPS-DSP %s
+// MIPS-DSP:#define __mips_dsp 1
+// MIPS-DSP:#define __mips_dsp_rev 1
+// MIPS-DSP-NOT:#define __mips_dspr2 1
+//
+// RUN: %clang_cc1 -target-feature +dspr2 \
+// RUN:   -E -dM -triple=mips-none-none < /dev/null \
+// RUN:   | FileCheck -check-prefix MIPS-DSPR2 %s
+// MIPS-DSPR2:#define __mips_dsp 1
+// MIPS-DSPR2:#define __mips_dsp_rev 2
+// MIPS-DSPR2:#define __mips_dspr2 1
+//
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=msp430-none-none < /dev/null | FileCheck -check-prefix MSP430 %s
 //
 // MSP430:#define MSP430 1
-- 
2.50.1