1 // RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s 2 3 // XFAIL: mips 4 5 // CHECK-NOT: readonly 6 // CHECK-NOT: readnone 7 8 // The struct being passed byval means that we cannot mark the 9 // function readnone. Readnone would allow stores to the arg to 10 // be deleted in the caller. We also don't allow readonly since 11 // the callee might write to the byval parameter. The inliner 12 // would have to assume the worse and introduce an explicit 13 // temporary when inlining such a function, which is costly for 14 // the common case in which the byval argument is not written. 15 struct S { int A[1000]; }; 16 int __attribute__ ((const)) f(struct S x) { x.A[1] = 0; return x.A[0]; } 17 int g(struct S x) __attribute__ ((pure)); 18 int h(struct S x) { return g(x); } 19
