Base type of attribute((mode)) can actually be a vector type.
The patch is to distinguish between base type and base element type.
This fixes http://llvm.org/PR17453.
Differential Revision: http://reviews.llvm.org/D10058
llvm-svn: 240125
"mode attribute only supported for integer and floating-point types">;
def err_mode_wrong_type : Error<
"type of machine mode does not match type of base type">;
+def err_complex_mode_vector_type : Error<
+ "type of machine mode does not support base vector types">;
def err_attr_wrong_decl : Error<
"%0 attribute invalid on this declaration, requires typedef or value">;
def warn_attribute_nonnull_no_pointers : Warning<
return;
}
- if (!OldTy->getAs<BuiltinType>() && !OldTy->isComplexType())
+ // Base type can also be a vector type (see PR17453).
+ // Distinguish between base type and base element type.
+ QualType OldElemTy = OldTy;
+ if (const VectorType *VT = OldTy->getAs<VectorType>())
+ OldElemTy = VT->getElementType();
+
+ if (!OldElemTy->getAs<BuiltinType>() && !OldElemTy->isComplexType())
S.Diag(Attr.getLoc(), diag::err_mode_not_primitive);
else if (IntegerMode) {
- if (!OldTy->isIntegralOrEnumerationType())
+ if (!OldElemTy->isIntegralOrEnumerationType())
S.Diag(Attr.getLoc(), diag::err_mode_wrong_type);
} else if (ComplexMode) {
- if (!OldTy->isComplexType())
+ if (!OldElemTy->isComplexType())
S.Diag(Attr.getLoc(), diag::err_mode_wrong_type);
} else {
- if (!OldTy->isFloatingType())
+ if (!OldElemTy->isFloatingType())
S.Diag(Attr.getLoc(), diag::err_mode_wrong_type);
}
return;
}
- QualType NewTy;
+ QualType NewElemTy;
if (IntegerMode)
- NewTy = S.Context.getIntTypeForBitwidth(DestWidth,
- OldTy->isSignedIntegerType());
+ NewElemTy = S.Context.getIntTypeForBitwidth(
+ DestWidth, OldElemTy->isSignedIntegerType());
else
- NewTy = S.Context.getRealTypeForBitwidth(DestWidth);
+ NewElemTy = S.Context.getRealTypeForBitwidth(DestWidth);
- if (NewTy.isNull()) {
+ if (NewElemTy.isNull()) {
S.Diag(Attr.getLoc(), diag::err_machine_mode) << 1 /*Unsupported*/ << Name;
return;
}
if (ComplexMode) {
- NewTy = S.Context.getComplexType(NewTy);
+ NewElemTy = S.Context.getComplexType(NewElemTy);
+ }
+
+ QualType NewTy = NewElemTy;
+ if (const VectorType *OldVT = OldTy->getAs<VectorType>()) {
+ // Complex machine mode does not support base vector types.
+ if (ComplexMode) {
+ S.Diag(Attr.getLoc(), diag::err_complex_mode_vector_type);
+ return;
+ }
+ unsigned NumElements = S.Context.getTypeSize(OldElemTy) *
+ OldVT->getNumElements() /
+ S.Context.getTypeSize(NewElemTy);
+ NewTy =
+ S.Context.getVectorType(NewElemTy, NumElements, OldVT->getVectorKind());
+ }
+
+ if (NewTy.isNull()) {
+ S.Diag(Attr.getLoc(), diag::err_mode_wrong_type);
+ return;
}
// Install the new type.
--- /dev/null
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -emit-llvm -o - | FileCheck %s
+
+typedef int __attribute__((mode(byte))) __attribute__((vector_size(4))) vec_t1;
+typedef int __attribute__((mode(QI))) __attribute__((vector_size(8))) vec_t2;
+typedef int __attribute__((mode(SI))) __attribute__((vector_size(16))) vec_t3;
+typedef int __attribute__((mode(DI))) __attribute__((vector_size(64)))vec_t4;
+typedef float __attribute__((mode(SF))) __attribute__((vector_size(128))) vec_t5;
+typedef float __attribute__((mode(DF))) __attribute__((vector_size(256))) vec_t6;
+
+void check() {
+ // CHECK: alloca <4 x i8>
+ vec_t1 v1;
+ // CHECK: alloca <8 x i8>
+ vec_t2 v2;
+ // CHECK: alloca <4 x i32>
+ vec_t3 v3;
+ // CHECK: alloca <8 x i64>
+ vec_t4 v4;
+ // CHECK: alloca <32 x float>
+ vec_t5 v5;
+ // CHECK: alloca <32 x double>
+ vec_t6 v6;
+}
+
+// CHECK: ret i32 4
+int check_size1() { return sizeof(vec_t1); }
+
+// CHECK: ret i32 8
+int check_size2() { return sizeof(vec_t2); }
+
+// CHECK: ret i32 16
+int check_size3() { return sizeof(vec_t3); }
+
+// CHECK: ret i32 64
+int check_size4() { return sizeof(vec_t4); }
+
+// CHECK: ret i32 128
+int check_size5() { return sizeof(vec_t5); }
+
+// CHECK: ret i32 256
+int check_size6() { return sizeof(vec_t6); }
--- /dev/null
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+// Correct cases.
+typedef int __attribute__((mode(byte))) __attribute__((vector_size(256))) vec_t1;
+typedef int __attribute__((mode(QI))) __attribute__((vector_size(256))) vec_t2;
+typedef int __attribute__((mode(SI))) __attribute__((vector_size(256))) vec_t3;
+typedef int __attribute__((mode(DI))) __attribute__((vector_size(256)))vec_t4;
+typedef float __attribute__((mode(SF))) __attribute__((vector_size(256))) vec_t5;
+typedef float __attribute__((mode(DF))) __attribute__((vector_size(256))) vec_t6;
+typedef float __attribute__((mode(XF))) __attribute__((vector_size(256))) vec_t7;
+
+// Incorrect cases.
+typedef float __attribute__((mode(QC))) __attribute__((vector_size(256))) vec_t8;
+// expected-error@-1{{unsupported machine mode 'QC'}}
+// expected-error@-2{{type of machine mode does not match type of base type}}
+typedef _Complex float __attribute__((mode(HC))) __attribute__((vector_size(256))) vec_t9;
+// expected-error@-1{{unsupported machine mode 'HC'}}
+// expected-error@-2{{invalid vector element type '_Complex float'}}
+typedef int __attribute__((mode(SC))) __attribute__((vector_size(256))) vec_t10;
+// expected-error@-1{{type of machine mode does not match type of base type}}
+// expected-error@-2{{type of machine mode does not support base vector types}}
+typedef float __attribute__((mode(DC))) __attribute__((vector_size(256))) vec_t11;
+// expected-error@-1{{type of machine mode does not match type of base type}}
+// expected-error@-2{{type of machine mode does not support base vector types}}
+typedef _Complex float __attribute__((mode(XC))) __attribute__((vector_size(256))) vec_t12;
+// expected-error@-1{{invalid vector element type '_Complex float'}}