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-rw-r--r--clang/include/clang/Basic/DiagnosticSemaKinds.td2
-rw-r--r--clang/lib/Sema/SemaExpr.cpp12
-rw-r--r--clang/test/SemaOpenCL/cond.cl4
3 files changed, 16 insertions, 2 deletions
diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index 7b21e1068c3..01fcc8714c4 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -7445,6 +7445,8 @@ def err_opencl_return_value_with_address_space : Error<
"return value cannot be qualified with address space">;
def err_opencl_constant_no_init : Error<
"variable in constant address space must be initialized">;
+def err_opencl_implicit_vector_conversion : Error<
+ "implicit conversions between vector types (%0 and %1) are not permitted">;
} // end of sema category
let CategoryName = "OpenMP Issue" in {
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 5297d7e26a4..58e2d2db6f9 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -7534,6 +7534,18 @@ QualType Sema::CheckVectorOperands(ExprResult &LHS, ExprResult &RHS,
return QualType();
}
+ // OpenCL V1.1 6.2.6.p1:
+ // If the operands are of more than one vector type, then an error shall
+ // occur. Implicit conversions between vector types are not permitted, per
+ // section 6.2.1.
+ if (getLangOpts().OpenCL &&
+ RHSVecType && isa<ExtVectorType>(RHSVecType) &&
+ LHSVecType && isa<ExtVectorType>(LHSVecType)) {
+ Diag(Loc, diag::err_opencl_implicit_vector_conversion) << LHSType
+ << RHSType;
+ return QualType();
+ }
+
// Otherwise, use the generic diagnostic.
Diag(Loc, diag::err_typecheck_vector_not_convertable)
<< LHSType << RHSType
diff --git a/clang/test/SemaOpenCL/cond.cl b/clang/test/SemaOpenCL/cond.cl
index 2e93c318b44..8cc4f1e8e91 100644
--- a/clang/test/SemaOpenCL/cond.cl
+++ b/clang/test/SemaOpenCL/cond.cl
@@ -84,7 +84,7 @@ uchar2 ntest03(int2 C, uchar X, uchar Y)
float2 ntest04(int2 C, int2 X, float2 Y)
{
- return C ? X : Y; // expected-error {{cannot convert between vector values of different size ('int2' (vector of 2 'int' values) and 'float2' (vector of 2 'float' values))}}
+ return C ? X : Y; // expected-error {{implicit conversions between vector types ('int2' (vector of 2 'int' values) and 'float2' (vector of 2 'float' values)) are not permitted}}
}
float2 ntest05(int2 C, int2 X, float Y)
@@ -115,7 +115,7 @@ int2 ntest09(int2 C, global int *X, global int *Y)
char3 ntest10(char C, char3 X, char2 Y)
{
- return C ? X : Y; // expected-error {{cannot convert between vector values of different size ('char3' (vector of 3 'char' values) and 'char2' (vector of 2 'char' values))}}
+ return C ? X : Y; // expected-error {{implicit conversions between vector types ('char3' (vector of 3 'char' values) and 'char2' (vector of 2 'char' values)) are not permitted}}
}
char3 ntest11(char2 C, char3 X, char Y)
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