// see a relocation to a dynamic symbol (indicating that the
	// call needs to go through the PLT), we generate up to three
	// stubs and reserve a PLT slot.
	//
	// 1) The call site is a "bl x" where genpltstub rewrites it to
	//    "bl x_stub". Depending on the properties of the caller
	//    (see ELFv2 1.5 4.2.5.3), a nop may be expected immediately
	//    after the bl. This nop is rewritten to ld r2,24(r1) to

  int num_retvals = 1;
  TFE_Op* op = TFE_NewOp(ctx, "AddFunction", status);
  ASSERT_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);

  // Add a config_proto attr, to trigger grappler graph rewrites in the current
  // eager runtime.
  if (enable_grappler) {
    tensorflow::ConfigProto config;
    // Do not skip grappler optimization even for small graphs.
    config.mutable_graph_options()

DATA runtime·tls_g+0(SB)/8, $16
GLOBL runtime·tls_g+0(SB), NOPTR, $8
#endif
#ifdef GOOS_windows
GLOBL runtime·tls_g+0(SB), NOPTR, $8
#endif

// The compiler and assembler's -spectre=ret mode rewrites
// all indirect CALL AX / JMP AX instructions to be
// CALL retpolineAX / JMP retpolineAX.
// See https://support.google.com/faqs/answer/7625886.
#define RETPOLINE(reg) \

Each of these flags is also recognized with an optional 'test.' prefix,
as in -test.v. When invoking the generated test binary (the result of
'go test -c') directly, however, the prefix is mandatory.

The 'go test' command rewrites or removes recognized flags,
as appropriate, both before and after the optional package list,
before invoking the test binary.

For instance, the command

	go test -v -myflag testdata -cpuprofile=prof.out -x

(LocalAddr <t> {sym} base mem) && t.Elem().HasPointers() => (MOVDaddr {sym} (SPanchored base mem))
(LocalAddr <t> {sym} base _)  && !t.Elem().HasPointers() => (MOVDaddr {sym} base)
(ITab (Load ptr mem)) => (MOVDload ptr mem)

// block rewrites
(If cond yes no) => (CLIJ {s390x.LessOrGreater} (MOVBZreg <typ.Bool> cond) [0] yes no)

// Write barrier.
(WB ...) => (LoweredWB ...)

(Rsh8x16 x y) => (SRAcond (SignExt8to32 x) (ZeroExt16to32 y) (CMPconst [256] (ZeroExt16to32 y)))
(Rsh8x8  x y) => (SRA (SignExt8to32 x) (ZeroExt8to32 y))

// constant shifts
// generic opt rewrites all constant shifts to shift by Const64
(Lsh32x64 x (Const64 [c])) && uint64(c) < 32 => (SLLconst x [int32(c)])
(Rsh32x64 x (Const64 [c])) && uint64(c) < 32 => (SRAconst x [int32(c)])