libqbe/lisc/test/cup.ssa

# counts up

@start
@loop
	%n0  =w phi @start -1988, @loop %n1
	%n1  =w add 1, %n0
	%cmp =w csle %n1, 1000
	jez %cmp, @end, @loop
@end
	ret
start work on comparisons There are two things I overlooked so far. 1. Binary instructions like cmp that do not have a result in registers need the size suffix sometimes, for example when comparing a spill location with a constant. 2. The register allocator needs to be adapted to support the comparison instruction: it is not possible to compare two spill locations without using a register. 2015-08-05 11:37:10 -04:00			`# counts up`

			`@start`
			`@loop`
			`%n0 =w phi @start -1988, @loop %n1`
			`%n1 =w add 1, %n0`
			`%cmp =w csle %n1, 1000`
			`jez %cmp, @end, @loop`
			`@end`
			`ret`