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PR 16354 was just fixed, and I tested the fix. I noticed that there is a new
va-arg-25.c:32: warning: SSE vector argument without SSE enabled changes the ABI
So I entered
gcc -Os -msse va-arg-25.c
and I get
va-arg-25.c: In function `main':
va-arg-25.c:36: error: unrecognizable insn:
(insn:HI 11 10 12 0 (set (mem/i:V4SI (pre_dec:SI (reg/f:SI 7 sp)) [0 S16 A128])
(reg:V4SI 59)) -1 (insn_list 10 (nil))
(expr_list:REG_DEAD (reg:V4SI 59)
va-arg-25.c:36: internal compiler error: in extract_insn, at recog.c:2050
The test case is
With 3.4.x and 3.3.x, we don't see the ICE, but we do see the problem
described in PR 16354 .
I have seen something like this in 3.4.0 also but I cannot remmeber were. The real issue is that it
cannot be done without sse2 and not sse.