[Bug rtl-optimization/15927] THUMB -O2: strength-reduced iteration variable ends up off by 1

[danfuzz at milk dot com]

------- Additional Comments From danfuzz at milk dot com  2004-06-11 05:32 -------
Created an attachment (id=6514)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6514&action=view)
Better C Source

I managed to pare the source down a bit more while still getting the bogus
output, though the register assignments are a little different. Here's the bad
assembly in this version:

	ldr	r3, [sp, #28]
	ldmia	r3!, {r2}
	ldr	r2, [sp, #40]
	ldr	r5, [r4, #20]
	str	r3, [sp, #28]
	str	r3, [sp, #44] // off by one!


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15927