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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Difference in relocations with -no-integrated-as"
href="https://llvm.org/bugs/show_bug.cgi?id=22996">22996</a>
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<th>Summary</th>
<td>Difference in relocations with -no-integrated-as
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>MC
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>russell_gallop@sn.scee.net
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>For the following example: using direct object emission the address at 0xb does
not have a relocation, using -no-integrated-as it does have a relocation. There
is a relocation for 0x6 in both cases. Using r232386.
$ cat test.cpp
struct A {
A();
};
void fn1() {
A();
fn1();
}
$ clang -c -O2 test.cpp -o direct.o
$ objdump -d direct.o
direct.o: file format elf64-x86-64
Disassembly of section .text:
0000000000000000 <_Z3fn1v>:
0: 50 push %rax
1: 48 8d 3c 24 lea (%rsp),%rdi
5: e8 00 00 00 00 callq a <_Z3fn1v+0xa>
a: e8 f1 ff ff ff callq 0 <_Z3fn1v>
f: 58 pop %rax
10: c3 retq
$ objdump -r direct.o
direct.o: file format elf64-x86-64
RELOCATION RECORDS FOR [.text]:
OFFSET TYPE VALUE
0000000000000006 R_X86_64_PC32 _ZN1AC1Ev-0x0000000000000004
RELOCATION RECORDS FOR [.eh_frame]:
OFFSET TYPE VALUE
0000000000000020 R_X86_64_PC32 .text
$ clang -c -O2 test.cpp -no-integrated-as -o no_int_as.o
$ objdump -d no_int_as.o
no_int_as.o: file format elf64-x86-64
Disassembly of section .text:
0000000000000000 <_Z3fn1v>:
0: 50 push %rax
1: 48 8d 3c 24 lea (%rsp),%rdi
5: e8 00 00 00 00 callq a <_Z3fn1v+0xa>
a: e8 00 00 00 00 callq f <_Z3fn1v+0xf>
f: 58 pop %rax
10: c3 retq
$ objdump -r no_int_as.o
no_int_as.o: file format elf64-x86-64
RELOCATION RECORDS FOR [.text]:
OFFSET TYPE VALUE
0000000000000006 R_X86_64_PC32 _ZN1AC1Ev-0x0000000000000004
000000000000000b R_X86_64_PC32 _Z3fn1v-0x0000000000000004
RELOCATION RECORDS FOR [.eh_frame]:
OFFSET TYPE VALUE
0000000000000020 R_X86_64_PC32 .text</pre>
</div>
</p>
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