[llvm-commits] [llvm-gcc] llvm-gcc patch for PR1582 (review only)

[Zhou Sheng]

Hi All,

This patch is for PR1582. As recent discuss on that pr, the C++ FE doesn't
track the restrict qualifier in the function declaration at all. When
llvm-gcc handling CALL_EXPR and emiting callInst instruction, it can't get
the "NoAlias" attribute, and hence insert a BitCast in CallInst. This patch
is to eliminate this bitcast.

Testcase attached here also.
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