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6 Commits

Author SHA1 Message Date
Hal Finkel a2347baaec Mark C++ reference parameters as dereferenceable 
Because references must be initialized using some evaluated expression, they
must point to something, and a callee can assume the reference parameter is
dereferenceable. Taking advantage of a new attribute just added to LLVM, mark
them as such.

Because dereferenceability in addrspace(0) implies nonnull in the backend, we
don't need both attributes. However, we need to know the size of the object to
use the dereferenceable attribute, so for incomplete types we still emit only
nonnull.

llvm-svn: 213386
 2014-07-18 15:52:10 +00:00
Nick Lewycky 9b46eb8112 Add 'nonnull' parameter or return attribute when producing an llvm pointer type in a function type where the C++ type is a reference. Update the tests. 
llvm-svn: 209723
 2014-05-28 09:56:42 +00:00
Stephen Lin 4362261b00 CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail. 
llvm-svn: 188447
 2013-08-15 06:47:53 +00:00
Eli Friedman 5995489d27 Fix a crash for an edge case of the GNU ?: extension. 
llvm-svn: 148923
 2012-01-25 05:04:17 +00:00
John McCall e9dab636df Bind references to opaque r-values correctly. Add a few test cases 
for ?: on record types.

llvm-svn: 126113
 2011-02-21 05:25:38 +00:00
John McCall f2e9110a9f Rename test/CodeGenCXX/gnu-conditional-scalar-ext.cpp to conditional-gnu-ext.cpp 
for consistency with other tests (and to remove "scalar" from the name).

llvm-svn: 126104
 2011-02-21 02:28:50 +00:00