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improve a note.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60636 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1388,7 +1388,18 @@ http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14705
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When GVN/PRE finds a store of float* to a must aliases pointer when expecting
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an int*, it should turn it into a bitcast. This is a nice generalization of
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the SROA hack that would apply to other cases.
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the SROA hack that would apply to other cases, e.g.:
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int foo(int C, int *P, float X) {
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if (C) {
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bar();
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*P = 42;
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} else
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*(float*)P = X;
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return *P;
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}
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One example (that requires crazy phi translation) is:
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16799
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