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[Bug rtl-optimization/29950] Generated code changes after unrelated edits in source.
- From: "vda dot linux at googlemail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 21 Jul 2007 23:41:50 -0000
- Subject: [Bug rtl-optimization/29950] Generated code changes after unrelated edits in source.
- References: <bug-29950-12956@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from vda dot linux at googlemail dot com 2007-07-21 23:41 -------
Tested gcc 4.2.1, generates identical code:
000000aa T find_pair
000000aa T find_pairB
000000aa T find_pairC
000000aa T find_pair
000000aa T find_pairB
000000aa T find_pairC
Also did a diff of .s files:
# diff -u vi_small.s vi_big.s
--- vi_small.s Sun Jul 22 00:38:33 2007
+++ vi_big.s Sun Jul 22 00:38:33 2007
@@ -1,4 +1,4 @@
- .file "vi_small.c"
+ .file "vi_big.c"
.text
.type begin_line, @function
begin_line:
@@ -505,11 +505,11 @@
movl dot, %esi
movl %esi, %eax
call begin_line
- cmpl cur_line.7876, %eax
+ cmpl cur_line.7880, %eax
je .L108
movl %esi, %eax
call begin_line
- movl %eax, cur_line.7876
+ movl %eax, cur_line.7880
movl Ureg, %eax
movl %eax, -16(%ebp)
movl end, %eax
@@ -694,8 +694,8 @@
.size last_file_modified, 4
last_file_modified:
.long -1
- .local cur_line.7876
- .comm cur_line.7876,4,4
+ .local cur_line.7880
+ .comm cur_line.7880,4,4
.local vi_setops
.comm vi_setops,4,4
.local editing
At least this testcase passes now. Maybe this is fixed in 4.2 indeed. Thanks!
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29950