From: Artyom Skrobov <artyom.skrobov@arm.com>
Date: Wed, 11 Sep 2013 14:50:53 +0100
Subject: [PATCH] Add error checking to reject neon_vector_type attribute on targets without NEON

---
 include/clang/Basic/DiagnosticSemaKinds.td      |    2 ++
 lib/Basic/Targets.cpp                           |    3 +--
 lib/Sema/SemaType.cpp                           |    7 +++++++
 test/Analysis/misc-ps-arm.m                     |    2 +-
 test/CodeGen/arm-arguments.c                    |    4 ++--
 test/CodeGen/arm-asm-diag.c                     |    2 +-
 test/CodeGen/arm-asm-warn.c                     |    2 +-
 test/CodeGen/struct-init.c                      |    2 +-
 test/CodeGen/struct-matching-constraint.c       |    2 +-
 test/CodeGenCXX/aarch64-mangle-neon-vectors.cpp |    2 +-
 test/CodeGenCXX/mangle-neon-vectors.cpp         |    2 +-
 test/Sema/aarch64-neon-vector-types.c           |    2 +-
 test/Sema/neon-vector-types-support.c           |    5 +++++
 test/Sema/neon-vector-types.c                   |    3 ++-
 test/SemaCXX/neon-vector-types.cpp              |    2 +-
 15 files changed, 28 insertions(+), 14 deletions(-)
 create mode 100644 test/Sema/neon-vector-types-support.c

diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index 7f8184c..64a76f5 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -1782,6 +1782,8 @@ def err_attribute_too_few_arguments : Error<
 def err_attribute_invalid_vector_type : Error<"invalid vector element type %0">;
 def err_attribute_bad_neon_vector_size : Error<
   "Neon vector size must be 64 or 128 bits">;
+def err_attribute_neon_unsupported : Error<
+  "%0 attribute is not supported for this target">;
 def err_aligned_attribute_argument_not_int : Error<
   "'aligned' attribute requires integer constant">;
 def err_alignas_attribute_wrong_decl_type : Error<
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 00431c2..8a6a405 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -3700,8 +3700,7 @@ public:
         .Case("arm", true)
         .Case("softfloat", SoftFloat)
         .Case("thumb", IsThumb)
-        .Case("neon", FPU == NeonFPU && !SoftFloat && 
-              StringRef(getCPUDefineSuffix(CPU)).startswith("7"))    
+        .Case("neon", FPU == NeonFPU && !SoftFloat)
         .Default(false);
   }
   // FIXME: Should we actually have some table instead of these switches?
diff --git a/lib/Sema/SemaType.cpp b/lib/Sema/SemaType.cpp
index 2acfb26..99ac25e 100644
--- a/lib/Sema/SemaType.cpp
+++ b/lib/Sema/SemaType.cpp
@@ -4728,6 +4728,13 @@ static bool isPermittedNeonBaseType(QualType &Ty,
 static void HandleNeonVectorTypeAttr(QualType& CurType,
                                      const AttributeList &Attr, Sema &S,
                                      VectorType::VectorKind VecKind) {
+  // Target must have NEON
+  if (!S.Context.getTargetInfo().hasFeature("neon")) {
+    S.Diag(Attr.getLoc(), diag::err_attribute_neon_unsupported)
+      << Attr.getName();
+    Attr.setInvalid();
+    return;
+  }
   // Check the attribute arguments.
   if (Attr.getNumArgs() != 1) {
     S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments)
diff --git a/test/Analysis/misc-ps-arm.m b/test/Analysis/misc-ps-arm.m
index 1ff0f17..a9ea327 100644
--- a/test/Analysis/misc-ps-arm.m
+++ b/test/Analysis/misc-ps-arm.m
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple thumbv7-apple-ios0.0.0 -analyze -analyzer-checker=core -analyzer-store=region -verify -fblocks -analyzer-opt-analyze-nested-blocks -Wno-objc-root-class %s
+// RUN: %clang_cc1 -triple thumbv7-apple-ios0.0.0 -target-feature +neon -analyze -analyzer-checker=core -analyzer-store=region -verify -fblocks -analyzer-opt-analyze-nested-blocks -Wno-objc-root-class %s
 // expected-no-diagnostics
 
 // <rdar://problem/11405978> - Handle casts of vectors to structs, and loading
diff --git a/test/CodeGen/arm-arguments.c b/test/CodeGen/arm-arguments.c
index d02a217..b6bac9a 100644
--- a/test/CodeGen/arm-arguments.c
+++ b/test/CodeGen/arm-arguments.c
@@ -1,6 +1,6 @@
 // REQUIRES: arm-registered-target
-// RUN: %clang_cc1 -triple armv7-apple-darwin9 -target-abi apcs-gnu -emit-llvm -w -o - %s | FileCheck -check-prefix=APCS-GNU %s
-// RUN: %clang_cc1 -triple armv7-apple-darwin9 -target-abi aapcs -emit-llvm -w -o - %s | FileCheck -check-prefix=AAPCS %s
+// RUN: %clang_cc1 -triple armv7-apple-darwin9 -target-feature +neon -target-abi apcs-gnu -emit-llvm -w -o - %s | FileCheck -check-prefix=APCS-GNU %s
+// RUN: %clang_cc1 -triple armv7-apple-darwin9 -target-feature +neon -target-abi aapcs -emit-llvm -w -o - %s | FileCheck -check-prefix=AAPCS %s
 
 // APCS-GNU-LABEL: define signext i8 @f0()
 // AAPCS-LABEL: define arm_aapcscc signext i8 @f0()
diff --git a/test/CodeGen/arm-asm-diag.c b/test/CodeGen/arm-asm-diag.c
index 925de46..944a271 100644
--- a/test/CodeGen/arm-asm-diag.c
+++ b/test/CodeGen/arm-asm-diag.c
@@ -1,5 +1,5 @@
 // REQUIRES: arm-registered-target
-// RUN: not %clang_cc1 -triple armv7 %s -S -o /dev/null 2>&1 | FileCheck %s
+// RUN: not %clang_cc1 -triple armv7 -target-feature +neon %s -S -o /dev/null 2>&1 | FileCheck %s
 
 // rdar://13446483
 typedef __attribute__((neon_vector_type(2))) long long int64x2_t;
diff --git a/test/CodeGen/arm-asm-warn.c b/test/CodeGen/arm-asm-warn.c
index 6112b19..a580700 100644
--- a/test/CodeGen/arm-asm-warn.c
+++ b/test/CodeGen/arm-asm-warn.c
@@ -1,5 +1,5 @@
 // REQUIRES: arm-registered-target
-// RUN: %clang_cc1 -triple armv7 %s -emit-llvm -o /dev/null
+// RUN: %clang_cc1 -triple armv7 -target-feature +neon %s -emit-llvm -o /dev/null
 
 char bar();
 
diff --git a/test/CodeGen/struct-init.c b/test/CodeGen/struct-init.c
index 5273138..30834ac 100644
--- a/test/CodeGen/struct-init.c
+++ b/test/CodeGen/struct-init.c
@@ -1,5 +1,5 @@
 // REQUIRES: arm-registered-target
-// RUN: %clang_cc1 -S -triple armv7-apple-darwin %s -emit-llvm -o - | FileCheck %s
+// RUN: %clang_cc1 -S -triple armv7-apple-darwin -target-feature +neon %s -emit-llvm -o - | FileCheck %s
 
 typedef struct _zend_ini_entry zend_ini_entry;
 struct _zend_ini_entry {
diff --git a/test/CodeGen/struct-matching-constraint.c b/test/CodeGen/struct-matching-constraint.c
index bdd11c8..dfc3014 100644
--- a/test/CodeGen/struct-matching-constraint.c
+++ b/test/CodeGen/struct-matching-constraint.c
@@ -1,5 +1,5 @@
 // REQUIRES: arm-registered-target
-// RUN: %clang_cc1 -S -emit-llvm -triple armv7a-apple-darwin %s -o /dev/null
+// RUN: %clang_cc1 -S -emit-llvm -triple armv7a-apple-darwin -target-feature +neon %s -o /dev/null
 typedef unsigned short uint16_t;
 typedef __attribute__((neon_vector_type(8))) uint16_t uint16x8_t;
 
diff --git a/test/CodeGenCXX/aarch64-mangle-neon-vectors.cpp b/test/CodeGenCXX/aarch64-mangle-neon-vectors.cpp
index 86509a0..2514704 100644
--- a/test/CodeGenCXX/aarch64-mangle-neon-vectors.cpp
+++ b/test/CodeGenCXX/aarch64-mangle-neon-vectors.cpp
@@ -1,5 +1,5 @@
 // REQUIRES: aarch64-registered-target
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu  %s -emit-llvm -o - | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +neon %s -emit-llvm -o - | FileCheck %s
 
 typedef unsigned char uint8_t;
 typedef unsigned short uint16_t;
diff --git a/test/CodeGenCXX/mangle-neon-vectors.cpp b/test/CodeGenCXX/mangle-neon-vectors.cpp
index 793c898..249ec2e 100644
--- a/test/CodeGenCXX/mangle-neon-vectors.cpp
+++ b/test/CodeGenCXX/mangle-neon-vectors.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple arm-none-linux-gnueabi %s -emit-llvm -o - | FileCheck %s
+// RUN: %clang_cc1 -triple arm-none-linux-gnueabi -target-feature +neon %s -emit-llvm -o - | FileCheck %s
 
 typedef float float32_t;
 typedef __fp16 float16_t;
diff --git a/test/Sema/aarch64-neon-vector-types.c b/test/Sema/aarch64-neon-vector-types.c
index f4d58ff..ddfafbc 100644
--- a/test/Sema/aarch64-neon-vector-types.c
+++ b/test/Sema/aarch64-neon-vector-types.c
@@ -1,5 +1,5 @@
 // REQUIRES: aarch64-registered-target
-// RUN: %clang_cc1 %s -triple aarch64-none-linux-gnu -fsyntax-only -verify
+// RUN: %clang_cc1 %s -triple aarch64-none-linux-gnu -target-feature +neon -fsyntax-only -verify
 
 typedef float float32_t;
 typedef unsigned char poly8_t;
diff --git a/test/Sema/neon-vector-types-support.c b/test/Sema/neon-vector-types-support.c
new file mode 100644
index 0000000..065e7a1
--- /dev/null
+++ b/test/Sema/neon-vector-types-support.c
@@ -0,0 +1,5 @@
+// RUN: %clang_cc1 %s -triple armv7 -fsyntax-only -verify
+
+typedef __attribute__((neon_vector_type(2))) int int32x2_t; // expected-error{{'neon_vector_type' attribute is not supported for this target}}
+typedef __attribute__((neon_polyvector_type(16))) short poly8x16_t; // expected-error{{'neon_polyvector_type' attribute is not supported for this target}}
+
diff --git a/test/Sema/neon-vector-types.c b/test/Sema/neon-vector-types.c
index d15a50d..d8dd412 100644
--- a/test/Sema/neon-vector-types.c
+++ b/test/Sema/neon-vector-types.c
@@ -1,4 +1,5 @@
-// RUN: %clang_cc1 %s -fsyntax-only -verify
+// RUN: %clang_cc1 %s -triple armv7 -target-feature +neon -fsyntax-only -verify
+// RUN: %clang_cc1 %s -triple armv8 -target-feature +neon -fsyntax-only -verify
 
 typedef float float32_t;
 typedef signed char poly8_t;
diff --git a/test/SemaCXX/neon-vector-types.cpp b/test/SemaCXX/neon-vector-types.cpp
index 336fcd4..c2953d7 100644
--- a/test/SemaCXX/neon-vector-types.cpp
+++ b/test/SemaCXX/neon-vector-types.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify "-triple" "thumbv7-apple-ios3.0.0" %s
+// RUN: %clang_cc1 -fsyntax-only -verify "-triple" "thumbv7-apple-ios3.0.0" -target-feature +neon %s
 // rdar://9208404
 
 typedef int MP4Err;
-- 
1.7.9.5

