diff lab4/test/regkill.p @ 0:bfdcc3820b32

Basis
author Mike Spivey <mike@cs.ox.ac.uk>
date Thu, 05 Oct 2017 08:04:15 +0100
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lab4/test/regkill.p	Thu Oct 05 08:04:15 2017 +0100
@@ -0,0 +1,67 @@
+(* Aliasing in CSE *)
+
+var x: integer;
+
+proc p();
+var y, z: integer;
+begin
+  y := 1;
+  z := y + 1;
+  z := 3;
+  z := y + 1;
+  x := z
+end;
+
+begin
+  p();
+  print_num(x);
+  newline()
+end.
+
+(*<<
+2
+>>*)
+
+(*[[
+@ picoPascal compiler output
+	.include "fixup.s"
+	.global pmain
+
+@ proc p();
+	.text
+_p:
+	mov ip, sp
+	stmfd sp!, {r4-r10, fp, ip, lr}
+	mov fp, sp
+@   y := 1;
+	mov r4, #1
+@   z := y + 1;
+	add r5, r4, #1
+@   z := 3;
+	mov r5, #3
+@   z := y + 1;
+	add r5, r4, #1
+@   x := z
+	set r0, _x
+	str r5, [r0]
+	ldmfd fp, {r4-r10, fp, sp, pc}
+	.ltorg
+
+pmain:
+	mov ip, sp
+	stmfd sp!, {r4-r10, fp, ip, lr}
+	mov fp, sp
+@   p();
+	bl _p
+@   print_num(x);
+	set r0, _x
+	ldr r0, [r0]
+	bl print_num
+@   newline()
+	bl newline
+	ldmfd fp, {r4-r10, fp, sp, pc}
+	.ltorg
+
+	.comm _x, 4, 4
+@ End
+]]*)