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[Bug debug/44832] [4.6 Regression] -fcompare-debug failure for C++ i386.c
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Jul 2010 15:00:23 -0000
- Subject: [Bug debug/44832] [4.6 Regression] -fcompare-debug failure for C++ i386.c
- References: <bug-44832-5394@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #28 from rguenth at gcc dot gnu dot org 2010-07-07 15:00 -------
No, the culprit is loop header copying which causes
@@ -2634,8 +2634,8 @@
goto <bb 8>;
<bb 8>:
- # .MEM_6 = PHI <.MEM_106(7), .MEM_105(D)(6)>
- # .MEM_107 = VDEF <.MEM_6>
+ # .MEM_149 = PHI <.MEM_106(7), .MEM_105(D)(6)>
+ # .MEM_107 = VDEF <.MEM_149>
ix86_expand_vector_init_concat (mode_1(D), target_14(D), &ops, n_8);
goto <bb 34>;
@@ -2665,8 +2665,8 @@
goto <bb 11>;
<bb 11>:
- # .MEM_15 = PHI <.MEM_108(10), .MEM_105(D)(9)>
- # .MEM_109 = VDEF <.MEM_15>
+ # .MEM_6 = PHI <.MEM_108(10), .MEM_105(D)(9)>
+ # .MEM_109 = VDEF <.MEM_6>
op0_23 = gen_reg_rtx (half_mode_22);
# .MEM_110 = VDEF <.MEM_109>
op1_24 = gen_reg_rtx (half_mode_22);
@@ -2826,8 +2826,8 @@
<bb 23>:
# word_48 = PHI <word_96(22), word_97(24)>
- # .MEM_37 = PHI <.MEM_102(22), .MEM_98(24)>
- # .MEM_128 = VDEF <.MEM_37>
+ # .MEM_26 = PHI <.MEM_102(22), .MEM_98(24)>
+ # .MEM_128 = VDEF <.MEM_26>
words[i_163] = word_48;
i_78 = i_163 + 1;
if (n_words_54 > i_78)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44832