llvm-project/clang/test/CodeGen/PR2001-bitfield-reload.c

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// RUN: clang --emit-llvm-bc -o - %s | opt --std-compile-opts | llvm-dis > %t &&
// RUN: grep "ret i32" %t | count 1 &&
// RUN: grep "ret i32 1" %t | count 1
// PR2001
/* Test that the result of the assignment properly uses the value *in
the bitfield* as opposed to the RHS. */
static int foo(int i) {
struct {
int f0 : 2;
} x;
return (x.f0 = i);
}
int bar() {
return foo(-5) == -1;
}