test: test for code that relies on the optimizer to be valid

There exists a fair bit of code out there which relies on the
optimizer in order to fit inside a predefined envelope.  NASM 2.04rc4
breaks this; write a simple test to demonstrate.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/test/fwdopt.asm b/test/fwdopt.asm
new file mode 100644 (file)
index 0000000..14ef0e6
--- /dev/null
+++ b/test/fwdopt.asm
@@ -0,0 +1,133 @@
+;Testname=test; Arguments=-fbin -ofwdopt.bin; Files=.stdout .stderr fwdopt.bin
+n0:    jmp n1
+n1:    jmp n2
+n2:    jmp n3
+n3:    jmp n4
+n4:    jmp n5
+n5:    jmp n6
+n6:    jmp n7
+n7:    jmp n8
+n8:    jmp n9
+n9:    jmp n10
+n10:   jmp n11
+n11:   jmp n12
+n12:   jmp n13
+n13:   jmp n14
+n14:   jmp n15
+n15:   jmp n16
+n16:   jmp n17
+n17:   jmp n18
+n18:   jmp n19
+n19:   jmp n20
+n20:   jmp n21
+n21:   jmp n22
+n22:   jmp n23
+n23:   jmp n24
+n24:   jmp n25
+n25:   jmp n26
+n26:   jmp n27
+n27:   jmp n28
+n28:   jmp n29
+n29:   jmp n30
+n30:   jmp n31
+n31:   jmp n32
+n32:   jmp n33
+n33:   jmp n34
+n34:   jmp n35
+n35:   jmp n36
+n36:   jmp n37
+n37:   jmp n38
+n38:   jmp n39
+n39:   jmp n40
+n40:   jmp n41
+n41:   jmp n42
+n42:   jmp n43
+n43:   jmp n44
+n44:   jmp n45
+n45:   jmp n46
+n46:   jmp n47
+n47:   jmp n48
+n48:   jmp n49
+n49:   jmp n50
+n50:   jmp n51
+n51:   jmp n52
+n52:   jmp n53
+n53:   jmp n54
+n54:   jmp n55
+n55:   jmp n56
+n56:   jmp n57
+n57:   jmp n58
+n58:   jmp n59
+n59:   jmp n60
+n60:   jmp n61
+n61:   jmp n62
+n62:   jmp n63
+n63:   jmp n64
+n64:   jmp n65
+n65:   jmp n66
+n66:   jmp n67
+n67:   jmp n68
+n68:   jmp n69
+n69:   jmp n70
+n70:   jmp n71
+n71:   jmp n72
+n72:   jmp n73
+n73:   jmp n74
+n74:   jmp n75
+n75:   jmp n76
+n76:   jmp n77
+n77:   jmp n78
+n78:   jmp n79
+n79:   jmp n80
+n80:   jmp n81
+n81:   jmp n82
+n82:   jmp n83
+n83:   jmp n84
+n84:   jmp n85
+n85:   jmp n86
+n86:   jmp n87
+n87:   jmp n88
+n88:   jmp n89
+n89:   jmp n90
+n90:   jmp n91
+n91:   jmp n92
+n92:   jmp n93
+n93:   jmp n94
+n94:   jmp n95
+n95:   jmp n96
+n96:   jmp n97
+n97:   jmp n98
+n98:   jmp n99
+n99:   jmp n100
+n100:  jmp n101
+n101:  jmp n102
+n102:  jmp n103
+n103:  jmp n104
+n104:  jmp n105
+n105:  jmp n106
+n106:  jmp n107
+n107:  jmp n108
+n108:  jmp n109
+n109:  jmp n110
+n110:  jmp n111
+n111:  jmp n112
+n112:  jmp n113
+n113:  jmp n114
+n114:  jmp n115
+n115:  jmp n116
+n116:  jmp n117
+n117:  jmp n118
+n118:  jmp n119
+n119:  jmp n120
+n120:  jmp n121
+n121:  jmp n122
+n122:  jmp n123
+n123:  jmp n124
+n124:  jmp n125
+n125:  jmp n126
+n126:  jmp n127
+n127:  jmp n0
+
+       ;;  This should emit exactly 3 NOP bytes
+       times 260-($-$$) nop
+       hlt