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Author SHA1 Message Date
Anastasia Stulova 81a25e352f [OpenCL] Fix type compatibility check and generic AS mangling. 
1. Reimplemented conditional operator so that it checks
compatibility of unqualified pointees of the 2nd and
the 3rd operands (C99, OpenCL v2.0 6.5.15).

Define QualTypes compatibility for OpenCL as following:

   - corresponding types are compatible (C99 6.7.3)
   - CVR-qualifiers are equal (C99 6.7.3)
   - address spaces are equal (implementation defined)

2. Added generic address space to Itanium mangling.

Review: D30037

Patch by Dmitry Borisenkov!

llvm-svn: 297468
 2017-03-10 15:23:07 +00:00
Yaxun Liu a1a87adf59 PR19957: [OpenCL] Incorrectly accepts implicit address space conversion with ternary operator. 
Generates addrspacecast instead of bitcast for ternary operator when necessary, and diagnose ternary operator with incompatible second and third operands.

https://llvm.org/bugs/show_bug.cgi?id=19957

Differential Revision: http://reviews.llvm.org/D17412

llvm-svn: 266111
 2016-04-12 19:43:36 +00:00
Anastasia Stulova 5d8ad8a7b8 [OpenCL] Implemented restrictions for pointer conversions specified in OpenCL v2.0. 
OpenCL v2.0 s6.5.5 restricts conversion of pointers to different address spaces:
- the named address spaces (__global, __local, and __private) => __generic - implicitly converted;
- __generic => named - with an explicit cast;
- named <=> named - disallowed;
- __constant <=> any other - disallowed.

llvm-svn: 222834
 2014-11-26 15:36:41 +00:00