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// RUN: %llvmgcc -O3 -S -o - -emit-llvm %s | grep readonly
// RUN: %llvmgcc -O3 -S -o - -emit-llvm %s | not grep readnone
// The struct being passed byval means that we need to mark the
// function readonly instead of readnone. Readnone would allow
// stores to the arg to be deleted in the caller.
struct S { int A[1000]; };
int __attribute__ ((const)) f(struct S x) { return x.A[0]; }
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