reassign 75773 gcc-4.6
found 75773 4.6.3-4
stop
Hi,
I could reproduce the bug when compiling with this 4.6.3-4 version
(the default in Debian unstable at this time), when using -m32 in
amd64:
---------------------------------------------------------------------
$ gcc -O2 -S -m32 test1.c -o test1.m32.s
$ cat test1.m32.s
.file "test1.c"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
movl 4(%esp), %ecx
movl 8(%esp), %edx
movl %ecx, %eax
subl %edx, %eax
cmpl %edx, %ecx
jae .L2
addl $100, %eax
.L2:
rep
ret
.cfi_endproc
.LFE0:
.size foo, .-foo
.ident "GCC: (Debian 4.6.3-4) 4.6.3"
.section .note.GNU-stack,"",@progbits
---------------------------------------------------------------------
Though surely not important, just for completion, with -m64 the result
is completely different:
---------------------------------------------------------------------
$ gcc -O2 -S -m64 test1.c -o test1.m64.s
$ cat test1.m64.s
.file "test1.c"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
movq %rdi, %rax
subq %rsi, %rax
cmpq %rsi, %rdi
leaq 100(%rax), %rdx
cmovb %rdx, %rax
ret
.cfi_endproc
.LFE0:
.size foo, .-foo
.ident "GCC: (Debian 4.6.3-4) 4.6.3"
.section .note.GNU-stack,"",@progbits
---------------------------------------------------------------------
Also confirmed with GCC 4.7.0, the only difference to the files above
is the line about the version of the compiler:
---------------------------------------------------------------------
$ gcc-4.7 --version | head -n 1
gcc-4.7 (Debian 4.7.0-6) 4.7.0
$ diff -U0 test1.{,gcc47-}m32.s
--- test1.m32.s 2012-05-02 20:05:55.908296453 +0100
+++ test1.gcc47-m32.s 2012-05-02 20:08:01.824292734 +0100
@@ -22 +22 @@
- .ident "GCC: (Debian 4.6.3-4) 4.6.3"
+ .ident "GCC: (Debian 4.7.0-6) 4.7.0"
$ diff -U0 test1.{,gcc47-}m64.s
--- test1.m64.s 2012-05-02 20:06:20.652295721 +0100
+++ test1.gcc47-m64.s 2012-05-02 20:07:52.868292996 +0100
@@ -18 +18 @@
- .ident "GCC: (Debian 4.6.3-4) 4.6.3"
+ .ident "GCC: (Debian 4.7.0-6) 4.7.0"
---------------------------------------------------------------------
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