if err := checkCompilerFlags("test", "test", f); err == nil {
			t.Errorf("missing error for %q", f)
		}
	}
}

var goodLinkerFlags = [][]string{
	{"-Fbar"},
	{"-lbar"},
	{"-Lbar"},
	{"-fpic"},
	{"-fno-pic"},
	{"-fPIC"},
	{"-fno-PIC"},
	{"-fpie"},
	{"-fno-pie"},
	{"-fPIE"},
	{"-fno-PIE"},
	{"-fsanitize=hands"},
	{"-g"},
	{"-ggdb"},
	{"-march=souza"},

	PASTECC R3, R4                  // 7c23270d
	COPY R3, R4                     // 7c23260c

	// load-and-reserve
	LBAR (R4)(R3*1),$1,R5           // 7ca32069
	LBAR (R4)(R0),$1,R5             // 7ca02069
	LBAR (R4),$0,R5                 // 7ca02068
	LBAR (R3),R5                    // 7ca01868
	LHAR (R4)(R3*1),$1,R5           // 7ca320e9
	LHAR (R4)(R0),$1,R5             // 7ca020e9

			p.To.Type = rt
			p.To.Reg = y
		}

	case ssa.OpPPC64LoweredAtomicAnd8,
		ssa.OpPPC64LoweredAtomicAnd32,
		ssa.OpPPC64LoweredAtomicOr8,
		ssa.OpPPC64LoweredAtomicOr32:
		// LWSYNC
		// LBAR/LWAR	(Rarg0), Rtmp
		// AND/OR	Rarg1, Rtmp
		// STBCCC/STWCCC Rtmp, (Rarg0)
		// BNE		-3(PC)
		ld := ppc64.ALBAR
		st := ppc64.ASTBCCC

		// atomic 8/32 and/or.
		// *arg0 &= (|=) arg1. arg2=mem. returns memory. auxint must be zero.
		// LBAR/LWAT	(Rarg0), Rtmp
		// AND/OR	Rarg1, Rtmp
		// STBCCC/STWCCC Rtmp, (Rarg0), Rtmp
		// BNE		Rtmp, -3(PC)
		{name: "LoweredAtomicAnd8", argLength: 3, reg: gpstore, asm: "AND", faultOnNilArg0: true, hasSideEffects: true},