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| -rw-r--r-- | test/CFrontend/2008-01-25-ByValReadNone.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/CFrontend/2008-01-25-ByValReadNone.c b/test/CFrontend/2008-01-25-ByValReadNone.c new file mode 100644 index 0000000000..afbf97066c --- /dev/null +++ b/test/CFrontend/2008-01-25-ByValReadNone.c @@ -0,0 +1,10 @@ +// 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]; } + |