1 // RUN: %clang_cc1 -emit-llvm -o - %s | not grep readonly 2 // RUN: %clang_cc1 -emit-llvm -o - %s | not grep readnone 3 4 // XFAIL: arm 5 6 // The struct being passed byval means that we cannot mark the 7 // function readnone. Readnone would allow stores to the arg to 8 // be deleted in the caller. We also don't allow readonly since 9 // the callee might write to the byval parameter. The inliner 10 // would have to assume the worse and introduce an explicit 11 // temporary when inlining such a function, which is costly for 12 // the common case in which the byval argument is not written. 13 struct S { int A[1000]; }; 14 int __attribute__ ((const)) f(struct S x) { x.A[1] = 0; return x.A[0]; } 15 int g(struct S x) __attribute__ ((pure)); 16 int h(struct S x) { return g(x); } 17
