[Bug middle-end/45722] [4.6 Regression] FAIL: gcc.c-torture/execute/20040709-2.c execution at -O1 and -Os
danglin at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Oct 11 16:30:00 GMT 2010
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45722
--- Comment #14 from John David Anglin <danglin at gcc dot gnu.org> 2010-10-11 16:30:09 UTC ---
At -O0, memcpy is used. So, problem doesn't occur.
;; x = sB;
(insn 81 80 82 (set (reg/f:SI 160) (high:SI (symbol_ref:SI ("sB") [flags
0x200] <var_decl 0x4028f420 sB>))
) pr45722-2.c:48 -1
(nil))
(insn 82 81 83 (set (reg/f:SI 159)
(lo_sum:SI (reg/f:SI 160)
(symbol_ref:SI ("sB") [flags 0x200] <var_decl 0x4028f420 sB>)))
pr4
5722-2.c:48 -1
(expr_list:REG_EQUAL (symbol_ref:SI ("sB") [flags 0x200] <var_decl
0x4028f
420 sB>)
(nil)))
(insn 83 82 84 (set (reg:SI 161)
(plus:SI (reg/f:SI 91 virtual-stack-vars)
(const_int 24 [0x18]))) pr45722-2.c:48 -1
(nil))
(insn 84 83 85 (set (reg/f:SI 162)
(reg/f:SI 159)) pr45722-2.c:48 -1
(nil))
(insn 85 84 86 (set (reg:SI 163)
(const_int 6 [0x6])) pr45722-2.c:48 -1
(nil))
(insn 86 85 87 (set (reg:SI 26 %r26)
(reg:SI 161)) pr45722-2.c:48 -1
(nil))
(insn 87 86 88 (set (reg:SI 25 %r25)
(reg/f:SI 162)) pr45722-2.c:48 -1
(nil))
(insn 88 87 89 (set (reg:SI 24 %r24)
(reg:SI 163)) pr45722-2.c:48 -1
(nil))
(call_insn 89 88 90 (parallel [
(set (reg:SI 28 %r28)
(call (mem:SI (symbol_ref/v:SI ("@memcpy") [flags 0x41]
<function_decl 0x402abf00 memcpy>) [0 S4 A32])
(const_int 16 [0x10])))
(clobber (reg:SI 1 %r1))
(clobber (reg:SI 2 %r2))
(use (const_int 0 [0]))
]) pr45722-2.c:48 -1
(expr_list:REG_EH_REGION (const_int 0 [0])
(nil))
(expr_list:REG_DEP_TRUE (use (reg:SI 24 %r24))
(expr_list:REG_DEP_TRUE (use (reg:SI 25 %r25))
(expr_list:REG_DEP_TRUE (use (reg:SI 26 %r26))
(nil)))))
(insn 90 89 0 (set (reg:SI 164)
(reg:SI 28 %r28)) pr45722-2.c:48 -1
(nil))
;; r_16 = fn3B (a_13);
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