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move PR1604 here.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57582 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-10-15 16:06:03 +00:00
parent f4fee2a976
commit db03983238
1 changed files with 17 additions and 0 deletions
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17
lib/Target/README.txt
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@ -954,3 +954,20 @@ should remove it, but it doesn't apply to memory objects.
//===---------------------------------------------------------------------===//
Better mod/ref analysis for scanf would allow us to eliminate the vtable and a
bunch of other stuff from this example (see PR1604):
#include <cstdio>
struct test {
int val;
virtual ~test() {}
};
int main() {
test t;
std::scanf("%d", &t.val);
std::printf("%d\n", t.val);
}
//===---------------------------------------------------------------------===//