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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Cannot select: 0xe87fb38: i32,ch = AtomicLoadMax"
href="https://bugs.llvm.org/show_bug.cgi?id=42415">42415</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Cannot select: 0xe87fb38: i32,ch = AtomicLoadMax
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>8.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: MIPS
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>zhaixiang@loongson.cn
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22147" name="attach_22147" title="/tmp/Atomics-bafc90.c">attachment 22147</a> <a href="attachment.cgi?id=22147&action=edit" title="/tmp/Atomics-bafc90.c">[details]</a></span>
/tmp/Atomics-bafc90.c
Hi,
$ clang++ -S -c llvm-project/clang/test/CodeGen/Atomics.c -o Atomics.S
clang-8: warning: treating 'c' input as 'c++' when in C++ mode, this behavior
is deprecated [-Wdeprecated]
llvm-project/clang/test/CodeGen/Atomics.c:52:39: warning: the semantics of this
intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
(void) __sync_fetch_and_nand (&sc, 1); // CHECK: atomicrmw nand i8
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:53:39: warning: the semantics of this
intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
(void) __sync_fetch_and_nand (&uc, 1); // CHECK: atomicrmw nand i8
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:54:39: warning: the semantics of this
intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
(void) __sync_fetch_and_nand (&ss, 1); // CHECK: atomicrmw nand i16
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:55:39: warning: the semantics of this
intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
(void) __sync_fetch_and_nand (&us, 1); // CHECK: atomicrmw nand i16
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:56:39: warning: the semantics of this
intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
(void) __sync_fetch_and_nand (&si, 1); // CHECK: atomicrmw nand i32
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:57:39: warning: the semantics of this
intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
(void) __sync_fetch_and_nand (&ui, 1); // CHECK: atomicrmw nand i32
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:58:40: warning: the semantics of this
intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
(void) __sync_fetch_and_nand (&sll, 1); // CHECK: atomicrmw nand i64
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:59:40: warning: the semantics of this
intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
(void) __sync_fetch_and_nand (&ull, 1); // CHECK: atomicrmw nand i64
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:110:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
sc = __sync_fetch_and_nand (&sc, 11); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:111:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
uc = __sync_fetch_and_nand (&uc, 11); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:112:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
ss = __sync_fetch_and_nand (&ss, 11); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:113:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
us = __sync_fetch_and_nand (&us, 11); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:114:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
si = __sync_fetch_and_nand (&si, 11); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:115:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
ui = __sync_fetch_and_nand (&ui, 11); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:116:40: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
sll = __sync_fetch_and_nand (&sll, 11); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:117:40: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:168:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
sc = __sync_nand_and_fetch (&sc, uc); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:171:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
uc = __sync_nand_and_fetch (&uc, uc); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:174:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
ss = __sync_nand_and_fetch (&ss, uc); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:177:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
us = __sync_nand_and_fetch (&us, uc); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:180:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
si = __sync_nand_and_fetch (&si, uc); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:183:38: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
ui = __sync_nand_and_fetch (&ui, uc); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:186:40: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
sll = __sync_nand_and_fetch (&sll, uc); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
llvm-project/clang/test/CodeGen/Atomics.c:189:40: warning: the semantics of
this intrinsic changed with GCC version 4.4 - the
newer semantics are provided here
[-Wsync-fetch-and-nand-semantics-changed]
ull = __sync_nand_and_fetch (&ull, uc); // CHECK: atomicrmw nand
~~~~~~~~~~~~~~~~~~~~~ ^
fatal error: error in backend: Cannot select: 0xe87fb38: i32,ch =
AtomicLoadMax<(volatile load store monotonic 4 on @si)>
0xe882f88, 0xe8d3b08, 0xe880970
0xe8d3b08: i64,ch = load<(load 8 from got)> 0xe820da8, 0xe8a0b58, undef:i64
0xe8a0b58: i64 = MipsISD::Wrapper Register:i64 %0,
TargetGlobalAddress:i64<i32* @si> 0 [TF=15]
0xe8805c8: i64 = Register %0
0xe8d40b8: i64 = TargetGlobalAddress<i32* @si> 0 [TF=15]
0xe8d0dc0: i64 = undef
0xe880970: i32,ch = load<(dereferenceable load 4 from %ir.7)> 0xe8d3f18,
FrameIndex:i64<6>, undef:i64
0xe882eb8: i64 = FrameIndex<6>
0xe8d0dc0: i64 = undef
In function: _Z11test_atomicv
clang-8: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 8.0.0
Target: mips64el-redhat-linux
Thread model: posix
InstalledDir: /usr/bin
clang-8: note: diagnostic msg: PLEASE submit a bug report to
<a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash backtrace, preprocessed source,
and associated run script.
clang-8: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-8: note: diagnostic msg: /tmp/Atomics-bafc90.c
clang-8: note: diagnostic msg: /tmp/Atomics-bafc90.sh
clang-8: note: diagnostic msg:
********************
Thanks,
Leslie Zhai</pre>
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