If the LoopConvert Transform detects an alias for the loop variable, it
attempts to use that name in the resulting range-based for loop while removing
the original DeclStmt for the variable. That removal produced bad code when the
declaration was in the condition of an if, switch, while, or for stmt. This
revision fixes the problem by simply replacing the declaration with a use of
the alias variable.
llvm-svn: 181242
Loop convert's variable name aliasing may cause issues if the variable is
declared as a value (copy). The converted loop will declare the variable as a
reference which may inadvertently cause modifications to the container if it
were used and modified as a temporary copy.
This is fixed by preserving the reference or value qualifiers of the aliased
variable. That is, if the variable was declared as a value the loop variable
will also be declared as a value and similarly for references.
Fixes: PR15600
Author: Jack Yang <jack.yang@intel.com>
llvm-svn: 178485
The loop convert tests for conflicting names have been extended to check for
macro names, types, and language keywords including language extensions. Tests
have also been added.
Fixes PR15322
Author: Jack Yang <jack.yang@intel.com>
Reviewer: gribozavr, klimek, revane
llvm-svn: 176690
